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Concerning the names of two phaeophycean algae: Colpomenia durvillei (Bory) M.E. Ramírez and Utriculidium durvillei Skottsberg
Cryptogamie, Algal., 1999, 20 (4): 289-293 0 1999 Adacll?ditions
scientifiques
et mCdicales Elsevier SAS. Tous droits rCservBs
289
Concerning the names of two phaeophycean algae: Colpomenia durvillei (Bory) M.E. Ramirez and Utriculidium durvillei Skottsberg Michael J. WYNNE Department of Biology and Herbarium, University of Michigan, Ann Arbor; Michigan 48109, USA (Received 13 July 1999, accepted 28 July 1999)
- When Skottsberg (1907) described the new genus Utriculidium, he cited ‘Asperococcus durvillaei Bory ?’ as the apparent basionym. The fact that a query was included allows us to treat Utriculidium durvillei Skottsberg as a new name, based on Skottsberg’s material from the Abstract
Falkland Islands and South Georgia and not based on Bory’s material from Chile. The latter material constitutes the type of Colpomenia durvillei (Bory) M.E. Ramirez. 0 1999 Adac/Editions scientifiques et mCdicales Elsevier SAS
R&urn6 - Lors de la description du nouveau genre Utriculidium, Skottsberg (1907) cita comme basionyme <>. La presence de ce point d’interrogation nous autorise ?Itraiter Utriculidium durvillei Skottsberg comme un nom nouveau, bask sur le matCrie1 de Skottsberg provenant des iles Falkland et de GCorgie du Sud, et non sur le ma&e1 de Bory, provenant du Chili. Le matCrie1 chilien de Bory constitve le type de Colpomenia durvillei (Bory) M.E. Ramirez. (Traduit par la RCdaction). 0 1999 Adac/Editions scientifiques et mCdicales Elsevier SAS
Utriculidium Skottsberg (1907: 36) was described on the basis of collections of a brown alga occurring in the Falkland Islands and South Georgia. It is now known from various Subantarctic islands as well as Antarctica. Skottsberg assigned his new genus to the ‘Scytosiphonae’ (now equivalent to the Scytosiphonaceae). Later, Feldmann (1949) included it in his new order Scytosiphonales on the basis of the exclusive occurrence of plurilocular organs. Skottsberg (1907) listed ‘Asperococcus durvillaei Bory ?’ in the synonymy of Utriculidium durvillei [‘durvillaei’], the type and only species. The query inserted next to the apparent basionym reflects Skottsberg’s uncertainty that his alga from the Subantarctic was the same as Bory’s alga. Asperococcus durvillei [‘durvillaei’] Bory (1828: 200) was based on material from ConcepGion, Chile, and its most recent taxonomic treatment has been to regard it as belonging to Colpomenia, namely, C. durviElei (Bory) M.E. Ramirez (Ramirez & Rojas, 1991). Ramirez & Rojas (1991) also stated that the ‘Utriculidium durvillaei’ of Skottsberg (1907) does not occur on their coastline (northern According to Stafleu & Cowan (1976, p. 703), the date of publication of the first page (p. 200) of the protologue was Dec. 1828, with the remaining part of the protologue (p. 201) being published in Aug. 1829.
290
M.J. Wynne
Chile). The distribution of Colpomenia durvillei also includes Peru (Acleto, 1973). Papenfuss (1964) also expressed uncertainty as to whether Bory’s type was representative of Skottsberg’s concept of Utriculidium durvillei. It is worthwhile to review some of the past taxonomic treatments of Utriculidium. Because of the close morphological similarity of Utriculidium durvillei to Adenocystis utricularis (Bory) Skottsberg and because they had complementary reproductive organs (plurilocular organs in the former and unilocular organs in the latter), Skottsberg (1921) thought it probable that his Utriculidium was the sexual phase of Adenocystis. But Miiller’s (1984) culture studies of Adenocystis occurring in New Zealand demonstrated a phase of microthalli releasing sexual cells, which was evidence that Adenocystis and Utriculidium were independent taxa. Only a direct life cycle is known for Utriculidium (DelCpine & Asensi, 1978; Reviers & DelCpine, 1981). In their examination of living material of U. durvillei from Kerguelen, Asensi et al. (1977) and DelCpine & Asensi (1978) observed the presence of several plastids per cell, a cytological feature inconsistent with the Scytosiphonaceae. Those authors placed Utriculidium near the genus Adenocystis and suggested that these two genera be classified within the order Chordariales rather than within the Dictyosiphonales. Analysis of SSU and LSU gene sequences by Rousseau et al. (in press) showed Adenocystis and Utriculidium to belong to a monophyletic group currently named ‘simple brown algae’ (Peters & Burkhardt,
Fig. 1. Lectotype of Asperococcus durvillei Bory, no. TA 5284, in the Thuret-Bomet Herbarium (PC), natural size. Photograph M. Dumont, laboratoire de cryptogamie, Musturn national d’histoire naturelle, Paris.
Colpomenia durvillei (Bory) M.E. Ramirez and Utriculidium durvillei Skottsberg
291
1998) or Ectocarpales ~en~u Rousseau & Reviers (1999), and the Adenocystaceae fam. nov. was proposed to accommodate this pair of genera on the basis of both morphological and molecular data. It is now abundantly clear from the studies of Ramfrez & Rojas (1991) and Mtiller et al. (1992) that Skottsberg’s alga, occurring in the Subantarctic and Antarctic, has nothing to do with the Chilean alga, Colpomenia durvillaei, other than having the same morphology of a simple saccate axis, a body form shared by many brown algal taxa (Wynne, 1973) and the occurrence of only plurilocular sporangia. If Skottsberg (1907) had cited Asperococcus duwillei Bory without a query, then acccording to Article 10.1 of the ICBN (Greuter et al., 1994, Tokyo Code), Utriculidium would have to be treated as a taxonomic synonym of Colpomenia. But it is a critical fact that Skottsberg placed a query after Asperococcus durvillei.
Fig. 2. Reproduction of pl. 11, fig 3, from Bory’s Atlas (1827-1829), natural size. Original in PC. Photograph M. Dumont, laboratoire de cryptogamie, MusCum national d’histoire naturelle, Paris.
292
M.J. Wynne
A comparable situation occurred in reference to an example of phanerogams. A proposal was made by Brummitt (1986, Taxon 3.5: 766-767; 1987, Taxon 36: 216, 218) to add a Note to Art. 33.2 as follows: “A new name including the same epithet as that of a name referred to its synonymy with a question mark or other indication of doubt is regarded as a new combination of that name.” The mail vote on this proposal was heavily negative (1987, Taxon 36: 862), and the proposal was eventually defeated (1989, Englera 11: 88-89). From the sequence of events in reference to this parallel example, it can be concluded that the Berlin Congress strongly refused to introduce into the Code a concept that would typify a name of an element that had been included only with doubt. It is the current spirit of the ICBN that this option would result in a destablization, and thus Article 10.1 does not apply to a name cited in synonymy with a query, such as ‘Asperococcus durvillaei Bory ?‘. Thus, the authorship of Utriculidium durvillei is Skottsberg alone, not (Bory) Skottsberg. Skottsberg’s (1907) account included a validating description and the citation of collection localities from the Falklands and South Georgia. One of these collections (C. Skottsberg no. 565, 18.viii.1902, Station 47, Stanley Harbour, Falkland Islands) was depicted by Mtiller et al. (1992, figs 4 & 5). This specimen, which is deposited in the Natural History Museum, Stockholm, is hereby designated the lectotype. Because Bory (1828) did not explicity indicate a Type, an authentic collection of Asperococcus durvillei [‘durvillaei’] from Concepc$on, Chile, in the Thuret-Bornet Herbarium in PC (no. TA 5284) is hereby designated the lectotype (Fig. 1) for this taxon. This collection closely matches Bory’s (1827-l 829) pl. 11, fig. 3 (Fig. 2). It was also depicted by Ramirez & Rojas (1991, Fig. lob), but contrary to Ramirez & Rojas indication that this collection was in the Montagne Herbarium in PC, it is in the Thuret-Bornet Herbarium (which includes the Bory Herbarium). Two isolectotypes are also recognized. One of these is in the Thuret-Bomet Herbarium (no. TA 5283) and the second isolectotype is in the Montagne Herbarium in PC (no. MA7376). It is this latter collection that was illustrated by Acleto (1973, fig. 29) and captioned as ‘material tipo’. It is known that it was Bory’s practice to retain in his own herbarium those collections that he deemed of primary importance in his descriptive works, and collections of secondary importance were distributed to others. Thus, in following the guidelines of Recommendation 9A of the ICBN, it is desirable to treat the syntype collection now in the Thuret-Bomet Herbarium as the lectotype (Fig. 1). Acknowledgements. I am grateful to Dr Bnmo de Reviers of the Museum National d’Histoire Naturelle, Paris, and Prof. Werner Greuter and Dr Brigitte Zimmer of the Botanische Garten & Botaniches Museum Berlin-Dahlem for sharing their ideas on this nomenclatural problem. I am very grateful to Mrs Dumont for taking the photographs.
REFERENCES ACLETO
O.C., 1973 - Las algas marinas de1 Peru. Boletin de la Sociedud Peruana de Bota’nicu 6: l-164. ASENSI A., DELEPINE R. & GUGLIELMI G., 1977 Nouvelles observations sur l’ultrastructure du plastidome de PhCophycCes. Bulletin de la Sock+ Phycologique de France 22: 192-205. BORY DE SAINT-VINCENT J.-B. 1827-1829 - Cryptogamie. In: Duperrey L.I., Voyage uutour du monde...sur..<< La Coquille M, pendant... 1822, 1823, 1824 et 1825... Botukque. Paris. 301 pp. and Atlas of 38 pls; [part 1: [i-iii], [l] - 48 Sep. 1827; part 2: 49-96 Dec. 1827; part 3: 97-136 Feb. 1828; part 4: 137-200 Dec. 1828; part 5: 137-200 Dec. 1829; part 6: 249-301 Nov. 18291.
Colpomenia DlEL&fNE
durvillei
(Boxy) M.E. Ramfrez and Utriculidium
durvillei
Skottsberg
293
R. & ASENSC A.,. 1978 - Reactions ecoph~siotogiques et variations marphc@dtiques chez Adenocystis et Utriculidium (PhCophycCes). Revue Algologique, N. S., 13: 43-85. FlXiXG~~Qi I., ‘NV9 - ‘I: or&e hes “scptosipnon&tes. ‘Memocres hors&he he ‘ia Bodete d’Histoire Naturelle de 1’Afrique du Nord 2 [Travaux botaniques dedies a RenC Maire]: 103-115. GREUTER W,‘., BARKCE ER, BCTRDET H.M,> CHALONER W.G,,. DEMOULCN V,. HAWKWORTH D.L., JP)RGESEN PM., NICOLSON D.H., SILVA P.C., TREHANE P. & MCNEIL J., 1994 - International Code of Botanical Nomenclature (Tokyo Code). Koeltz Scientific Books, Kiinigstein. xviii + 389 p. [Regnum Vegetabile 1311. MULLER D.G., 1984 - Culture studies on the life history of Adenocystis utricularis (Phaeophyceae, Dictyosiphonales). Phycologia 23: 87-94. MULLER D.G., RAMIREZ M.E. & R. WESTERMEIER R., 1992 - Utriculidium durvillei (Bory ?) Skottsberg en isla Rey Jorge, Antarctica. Se’r Cientijica Institute Antdrtico Chileno 42: 47-52. P&Q?EXm% GE _. 1964 - C&&P% anh. ~X~\Q~~@$~ of Rss!&C~~CXX& SX&?sX&X~‘\\c %xiti\C marine algae. Antarctic Research Series vol. 1. 76 p. American Geophysical Union. PEl-El& ‘A?. ^aL %mKi?‘m E., ‘lX% - %ystemaiic positon dr ‘tne ‘t&p enbopnyre Laminarionema elsbetiae (Ectocarpales sensu lato, Phaeophyceae) inferred from nuclear ribosomal DNA sequences. Phycologia 37: 114-120. RAMIREZ M.E. & ROJAS V.G., 1991 - El genera Colpomenia (F. C. Mertens ex Roth) Derbes et Solier (Phaeophyceae), en Chile. Boletin de1 Museo National de Historia Natural 42: 1l-24. REVIERS B. de & DE&PINE R., 1981 - BioIogical data on a southern Phaeophyceae Adenocystis utricularis (Bory) Skottsberg, possible material for alginate industry. Proceedings of the International Seaweed Symposium 10: 345-350. ROUSSEAU F. & REVIERS B. de, 1999 - Circumscription of the order Ectocarpales (Phaeophyceae): bibliographical synthesis and molecular evidence. Cryptogamie, Algologie 20: 5-18. ROUSSEAU F., REVIERS B. de, LECLERC M.-C., ASENSI A. & DELEPINE R., - Adenocystaceae fam. nov. (Phaeophyceae) based on morphological and molecular evidence. European Journal of Phycology (in press). RUSSELL G. & FLETCHER R.L., 1975 - A numerical taxonomic study of the British Phaeophyta. Journal of the Marine Biological Association of the United Kingdom 55: 763-783. SKOTISBERG CT.,1407 - Zur Kenntnis der Subantarktischen und Antarktischen MeeresaIgen I. Phaeophyceen. Wissenschafliche Ergebnisse der Schwedischen Siidpolar-Expedition 1901-1903 . . . Band IV, Lief. 6. Stockholm. SKOTTSBEKG C., 1921 - Botanische Ergebnisse der schwedishen Expedition nach Patagonien und dem Feuerland 1907-1909. VIII. Marine algae. I. Phaeophyceae. Kungl. Svenska Vetenskapsakademiens Handlingar 61 (11): l-56. STAFLEU EA. & COWAN R., 1976 - Taxanomic literature Volume? A-G. 2nd edn. Utrecht, Bohn, Scheltema and Holkema, xl + 1136 p. [Regnum Vegetabile vol. 941. WYNNE M.J., 1973 - A key to unbranched, cylindrical brown algae. Contributions in Marine Science 17: 133-152.
scientifiques
et mCdicales Elsevier SAS. Tous droits rCservBs
289
Concerning the names of two phaeophycean algae: Colpomenia durvillei (Bory) M.E. Ramirez and Utriculidium durvillei Skottsberg Michael J. WYNNE Department of Biology and Herbarium, University of Michigan, Ann Arbor; Michigan 48109, USA (Received 13 July 1999, accepted 28 July 1999)
- When Skottsberg (1907) described the new genus Utriculidium, he cited ‘Asperococcus durvillaei Bory ?’ as the apparent basionym. The fact that a query was included allows us to treat Utriculidium durvillei Skottsberg as a new name, based on Skottsberg’s material from the Abstract
Falkland Islands and South Georgia and not based on Bory’s material from Chile. The latter material constitutes the type of Colpomenia durvillei (Bory) M.E. Ramirez. 0 1999 Adac/Editions scientifiques et mCdicales Elsevier SAS
R&urn6 - Lors de la description du nouveau genre Utriculidium, Skottsberg (1907) cita comme basionyme <
Utriculidium Skottsberg (1907: 36) was described on the basis of collections of a brown alga occurring in the Falkland Islands and South Georgia. It is now known from various Subantarctic islands as well as Antarctica. Skottsberg assigned his new genus to the ‘Scytosiphonae’ (now equivalent to the Scytosiphonaceae). Later, Feldmann (1949) included it in his new order Scytosiphonales on the basis of the exclusive occurrence of plurilocular organs. Skottsberg (1907) listed ‘Asperococcus durvillaei Bory ?’ in the synonymy of Utriculidium durvillei [‘durvillaei’], the type and only species. The query inserted next to the apparent basionym reflects Skottsberg’s uncertainty that his alga from the Subantarctic was the same as Bory’s alga. Asperococcus durvillei [‘durvillaei’] Bory (1828: 200) was based on material from ConcepGion, Chile, and its most recent taxonomic treatment has been to regard it as belonging to Colpomenia, namely, C. durviElei (Bory) M.E. Ramirez (Ramirez & Rojas, 1991). Ramirez & Rojas (1991) also stated that the ‘Utriculidium durvillaei’ of Skottsberg (1907) does not occur on their coastline (northern According to Stafleu & Cowan (1976, p. 703), the date of publication of the first page (p. 200) of the protologue was Dec. 1828, with the remaining part of the protologue (p. 201) being published in Aug. 1829.
290
M.J. Wynne
Chile). The distribution of Colpomenia durvillei also includes Peru (Acleto, 1973). Papenfuss (1964) also expressed uncertainty as to whether Bory’s type was representative of Skottsberg’s concept of Utriculidium durvillei. It is worthwhile to review some of the past taxonomic treatments of Utriculidium. Because of the close morphological similarity of Utriculidium durvillei to Adenocystis utricularis (Bory) Skottsberg and because they had complementary reproductive organs (plurilocular organs in the former and unilocular organs in the latter), Skottsberg (1921) thought it probable that his Utriculidium was the sexual phase of Adenocystis. But Miiller’s (1984) culture studies of Adenocystis occurring in New Zealand demonstrated a phase of microthalli releasing sexual cells, which was evidence that Adenocystis and Utriculidium were independent taxa. Only a direct life cycle is known for Utriculidium (DelCpine & Asensi, 1978; Reviers & DelCpine, 1981). In their examination of living material of U. durvillei from Kerguelen, Asensi et al. (1977) and DelCpine & Asensi (1978) observed the presence of several plastids per cell, a cytological feature inconsistent with the Scytosiphonaceae. Those authors placed Utriculidium near the genus Adenocystis and suggested that these two genera be classified within the order Chordariales rather than within the Dictyosiphonales. Analysis of SSU and LSU gene sequences by Rousseau et al. (in press) showed Adenocystis and Utriculidium to belong to a monophyletic group currently named ‘simple brown algae’ (Peters & Burkhardt,
Fig. 1. Lectotype of Asperococcus durvillei Bory, no. TA 5284, in the Thuret-Bomet Herbarium (PC), natural size. Photograph M. Dumont, laboratoire de cryptogamie, Musturn national d’histoire naturelle, Paris.
Colpomenia durvillei (Bory) M.E. Ramirez and Utriculidium durvillei Skottsberg
291
1998) or Ectocarpales ~en~u Rousseau & Reviers (1999), and the Adenocystaceae fam. nov. was proposed to accommodate this pair of genera on the basis of both morphological and molecular data. It is now abundantly clear from the studies of Ramfrez & Rojas (1991) and Mtiller et al. (1992) that Skottsberg’s alga, occurring in the Subantarctic and Antarctic, has nothing to do with the Chilean alga, Colpomenia durvillaei, other than having the same morphology of a simple saccate axis, a body form shared by many brown algal taxa (Wynne, 1973) and the occurrence of only plurilocular sporangia. If Skottsberg (1907) had cited Asperococcus duwillei Bory without a query, then acccording to Article 10.1 of the ICBN (Greuter et al., 1994, Tokyo Code), Utriculidium would have to be treated as a taxonomic synonym of Colpomenia. But it is a critical fact that Skottsberg placed a query after Asperococcus durvillei.
Fig. 2. Reproduction of pl. 11, fig 3, from Bory’s Atlas (1827-1829), natural size. Original in PC. Photograph M. Dumont, laboratoire de cryptogamie, MusCum national d’histoire naturelle, Paris.
292
M.J. Wynne
A comparable situation occurred in reference to an example of phanerogams. A proposal was made by Brummitt (1986, Taxon 3.5: 766-767; 1987, Taxon 36: 216, 218) to add a Note to Art. 33.2 as follows: “A new name including the same epithet as that of a name referred to its synonymy with a question mark or other indication of doubt is regarded as a new combination of that name.” The mail vote on this proposal was heavily negative (1987, Taxon 36: 862), and the proposal was eventually defeated (1989, Englera 11: 88-89). From the sequence of events in reference to this parallel example, it can be concluded that the Berlin Congress strongly refused to introduce into the Code a concept that would typify a name of an element that had been included only with doubt. It is the current spirit of the ICBN that this option would result in a destablization, and thus Article 10.1 does not apply to a name cited in synonymy with a query, such as ‘Asperococcus durvillaei Bory ?‘. Thus, the authorship of Utriculidium durvillei is Skottsberg alone, not (Bory) Skottsberg. Skottsberg’s (1907) account included a validating description and the citation of collection localities from the Falklands and South Georgia. One of these collections (C. Skottsberg no. 565, 18.viii.1902, Station 47, Stanley Harbour, Falkland Islands) was depicted by Mtiller et al. (1992, figs 4 & 5). This specimen, which is deposited in the Natural History Museum, Stockholm, is hereby designated the lectotype. Because Bory (1828) did not explicity indicate a Type, an authentic collection of Asperococcus durvillei [‘durvillaei’] from Concepc$on, Chile, in the Thuret-Bornet Herbarium in PC (no. TA 5284) is hereby designated the lectotype (Fig. 1) for this taxon. This collection closely matches Bory’s (1827-l 829) pl. 11, fig. 3 (Fig. 2). It was also depicted by Ramirez & Rojas (1991, Fig. lob), but contrary to Ramirez & Rojas indication that this collection was in the Montagne Herbarium in PC, it is in the Thuret-Bornet Herbarium (which includes the Bory Herbarium). Two isolectotypes are also recognized. One of these is in the Thuret-Bomet Herbarium (no. TA 5283) and the second isolectotype is in the Montagne Herbarium in PC (no. MA7376). It is this latter collection that was illustrated by Acleto (1973, fig. 29) and captioned as ‘material tipo’. It is known that it was Bory’s practice to retain in his own herbarium those collections that he deemed of primary importance in his descriptive works, and collections of secondary importance were distributed to others. Thus, in following the guidelines of Recommendation 9A of the ICBN, it is desirable to treat the syntype collection now in the Thuret-Bomet Herbarium as the lectotype (Fig. 1). Acknowledgements. I am grateful to Dr Bnmo de Reviers of the Museum National d’Histoire Naturelle, Paris, and Prof. Werner Greuter and Dr Brigitte Zimmer of the Botanische Garten & Botaniches Museum Berlin-Dahlem for sharing their ideas on this nomenclatural problem. I am very grateful to Mrs Dumont for taking the photographs.
REFERENCES ACLETO
O.C., 1973 - Las algas marinas de1 Peru. Boletin de la Sociedud Peruana de Bota’nicu 6: l-164. ASENSI A., DELEPINE R. & GUGLIELMI G., 1977 Nouvelles observations sur l’ultrastructure du plastidome de PhCophycCes. Bulletin de la Sock+ Phycologique de France 22: 192-205. BORY DE SAINT-VINCENT J.-B. 1827-1829 - Cryptogamie. In: Duperrey L.I., Voyage uutour du monde...sur..<< La Coquille M, pendant... 1822, 1823, 1824 et 1825... Botukque. Paris. 301 pp. and Atlas of 38 pls; [part 1: [i-iii], [l] - 48 Sep. 1827; part 2: 49-96 Dec. 1827; part 3: 97-136 Feb. 1828; part 4: 137-200 Dec. 1828; part 5: 137-200 Dec. 1829; part 6: 249-301 Nov. 18291.
Colpomenia DlEL&fNE
durvillei
(Boxy) M.E. Ramfrez and Utriculidium
durvillei
Skottsberg
293
R. & ASENSC A.,. 1978 - Reactions ecoph~siotogiques et variations marphc@dtiques chez Adenocystis et Utriculidium (PhCophycCes). Revue Algologique, N. S., 13: 43-85. FlXiXG~~Qi I., ‘NV9 - ‘I: or&e hes “scptosipnon&tes. ‘Memocres hors&he he ‘ia Bodete d’Histoire Naturelle de 1’Afrique du Nord 2 [Travaux botaniques dedies a RenC Maire]: 103-115. GREUTER W,‘., BARKCE ER, BCTRDET H.M,> CHALONER W.G,,. DEMOULCN V,. HAWKWORTH D.L., JP)RGESEN PM., NICOLSON D.H., SILVA P.C., TREHANE P. & MCNEIL J., 1994 - International Code of Botanical Nomenclature (Tokyo Code). Koeltz Scientific Books, Kiinigstein. xviii + 389 p. [Regnum Vegetabile 1311. MULLER D.G., 1984 - Culture studies on the life history of Adenocystis utricularis (Phaeophyceae, Dictyosiphonales). Phycologia 23: 87-94. MULLER D.G., RAMIREZ M.E. & R. WESTERMEIER R., 1992 - Utriculidium durvillei (Bory ?) Skottsberg en isla Rey Jorge, Antarctica. Se’r Cientijica Institute Antdrtico Chileno 42: 47-52. P&Q?EXm% GE _. 1964 - C&&P% anh. ~X~\Q~~@$~ of Rss!&C~~CXX& SX&?sX&X~‘\\c %xiti\C marine algae. Antarctic Research Series vol. 1. 76 p. American Geophysical Union. PEl-El& ‘A?. ^aL %mKi?‘m E., ‘lX% - %ystemaiic positon dr ‘tne ‘t&p enbopnyre Laminarionema elsbetiae (Ectocarpales sensu lato, Phaeophyceae) inferred from nuclear ribosomal DNA sequences. Phycologia 37: 114-120. RAMIREZ M.E. & ROJAS V.G., 1991 - El genera Colpomenia (F. C. Mertens ex Roth) Derbes et Solier (Phaeophyceae), en Chile. Boletin de1 Museo National de Historia Natural 42: 1l-24. REVIERS B. de & DE&PINE R., 1981 - BioIogical data on a southern Phaeophyceae Adenocystis utricularis (Bory) Skottsberg, possible material for alginate industry. Proceedings of the International Seaweed Symposium 10: 345-350. ROUSSEAU F. & REVIERS B. de, 1999 - Circumscription of the order Ectocarpales (Phaeophyceae): bibliographical synthesis and molecular evidence. Cryptogamie, Algologie 20: 5-18. ROUSSEAU F., REVIERS B. de, LECLERC M.-C., ASENSI A. & DELEPINE R., - Adenocystaceae fam. nov. (Phaeophyceae) based on morphological and molecular evidence. European Journal of Phycology (in press). RUSSELL G. & FLETCHER R.L., 1975 - A numerical taxonomic study of the British Phaeophyta. Journal of the Marine Biological Association of the United Kingdom 55: 763-783. SKOTISBERG CT.,1407 - Zur Kenntnis der Subantarktischen und Antarktischen MeeresaIgen I. Phaeophyceen. Wissenschafliche Ergebnisse der Schwedischen Siidpolar-Expedition 1901-1903 . . . Band IV, Lief. 6. Stockholm. SKOTTSBEKG C., 1921 - Botanische Ergebnisse der schwedishen Expedition nach Patagonien und dem Feuerland 1907-1909. VIII. Marine algae. I. Phaeophyceae. Kungl. Svenska Vetenskapsakademiens Handlingar 61 (11): l-56. STAFLEU EA. & COWAN R., 1976 - Taxanomic literature Volume? A-G. 2nd edn. Utrecht, Bohn, Scheltema and Holkema, xl + 1136 p. [Regnum Vegetabile vol. 941. WYNNE M.J., 1973 - A key to unbranched, cylindrical brown algae. Contributions in Marine Science 17: 133-152.