Typification of the names of some infraspecific taxa in ... - Pottiaceae

TAXON 56 (3) • August 2007: 949–952Cano • Typification and taxonomy in the Tortula subulata complexTypification of the names of some infraspecific taxa in the Tortula subulatacomplex (Pottiaceae, Bryophyta) and their taxonomic dispositionMaría J. CanoDepartamento de Biología Vegetal (Área de Botánica), Facultad de Biología, Universidad de Murcia,30100 Murcia, Spain. mcano@um.esTypes for the names Barbula saxicola Lamy, Barbula subulata var. longifolia Kindb., Syntrichia alpina Brid.,Tortula inermis var. submarginata Schiffn., and Tortula subulata var. compacta Schiffn., are designatedhere. Syntrichia alpina is considered conspecific with T. subulata Hedw., with which Tortula inermis var.submarginata and T. subulata var. compacta are also synonymized, as is Barbula subulata var. longifoliawith T. schimperi M.J. Cano & al. Barbula saxicola is here considered to apply to the species currently knownas Dialytrichia fragilifolia (Bizot & Cl. Roux) F. Lara; as B. saxicola has priority, this necessitates the newcombination D. saxicola (Lamy) M.J. Cano.KEYWORDS: Bryophyta, lectotypification, nomenclature, Pottiaceae, taxonomy, TortulaINTRODUCTIONMany authors have commented on the taxonomicproximity of Tortula inermis (Brid.) Mont., T. mucronifoliaSchwägr., and T. subulata Hedw. (Schimper, 1876;Mönkemeyer, 1927; Podpěra, 1954), whose morphologicaldelimitation and taxonomic status have been treatedin different ways. A large number of infraspecific taxahave been described reflecting the high morphologicalvariation and intergradation in these species (see Warnstorf,1912). This complex of taxa, the Tortula subulatacomplex, is mainly distinguished from the rest of Tortulaby the long leaves, (2.2–)2.5–5.5 mm long, with no hairpoint(generally mucronate or apiculate) and a long capsulewith twisted peristome teeth emerging from a high,tessellated basal membrane similar to those present in thegenus Syntrichia Brid.While preparing a morphometric and molecular studyof the Tortula subulata complex (Cano & al., 2005), typematerial of some names of infraspecific taxa currentlyincluded in this group was studied. Some of these weretypified in a previous study (Cano & Gallego, 2003),although most remained untypified and their taxonomicdisposition was in some cases erroneous. In addition,one name previously included in this complex of taxaon account of its long and mucronate leaves was typifiedand found not be referable to this group any more. Basedon a morphological study and with the aim of enhancingnomenclatural stability, lectotypes for five names of taxacurrently included in the T. subulata complex are proposed.All type citations refer to the information on thelabels of the type material. In all cases where the types aredesignated, the first name given is the one being typified.The accepted names are shown in bold.TYPIFICATION AND TAXONOMY1. Barbula saxicola Lamy in Rev. Bryol. 2: 67. 1875 ≡Tortula subulata f. saxicola (Lamy) Podp., Consp.Musc. Eur.: 250. 1954 ≡ Dialytrichia saxicola (Lamy)M.J. Cano, comb. nov. – Type citation: Sur la surfacenue d’un rocher à l’usine de Parpaillat près d’Isle lelong de la route d’Aixe; sur les parois extérieures desmurs de l’église de Saint-Priest-sous-Aixe. – Lectotype(designated here): [France]: “Haute-Vienne, surles murs de Saint-Priest-sous-Aixe”, 26 Mai 1872, E.Lamy s.n. – S! (No. B63566)= Dialytrichia mucronata var. fragilifolia Bizot & Cl.Roux in Rev. Bryol. Lichénol. 36: 110. 1969 ≡ D. fragilifolia(Bizot & Cl. Roux) F. Lara, Fl. Briof. Ibér.Pottiaceae: Timiella, […]: 26. 2005.Lamy de la Chapelle (1875) mentioned in the protologuethat W.P. Schimper and B. Boulay thought thathis plant could be Barbula subulata (Hedw.) P. Beauv.,although they saw some differences between both taxa, thenew taxon having: “des feuilles obtuses, moins longues,moins larges, d’un vert plus foncé, à tissu plus dense moinstransparent, non marginées, à bords replies en-dessous.”According to Stafleu & Cowan (1979), the originalmaterial of Lamy de la Chapelle is kept at PC; however,no syntypes were found in this herbarium (E. Bury, pers.comm.). Additionally, no material of this species was inBR, where duplicates of Lamy de la Chapelle are deposited.Surprisingly, a syntype of this name was found at S.This syntype is in total accordance with the descriptionprovided and is chosen as lectotype. After a study of thisspecimen, it is concluded that it does not belong to the genusTortula, an assignment that Podpěra (1954) suggested949

Cano • Typification and taxonomy in the Tortula subulata complexTAXON 56 (3) • August 2007: 949–952and that was followed in Wijk & al. (1959, 1969). The typespecimen shows quadrate, thin-walled marginal cells ofthe leaf disposed in 2-strata, and a nerve with two stereidbands, the dorsal band being crescent-shaped, which placesit in the genus Dialytrichia (Schimp.) Limpr. According toLara (2005, 2006), two species can be recognized in thegenus Dialytrichia : D. mucronata (Brid.) Broth. in Engler& Prantl, Nat. Pflanzenfam. 1(3): 412. 1902 (Barbulamucronata Brid., Muscol. Recent. Suppl. 1: 268. 1806)characterized by leaves not fragile and entire margins; andD. fragilifolia with fragile leaves and crenate margins. Thetype of Barbula saxicola shows fragile leaves and crenatemargins and is here considered to belong to the species thatLara (2005) named D. fragilifolia. However, the transferof Barbula saxicola to the genus Dialytrichia necessitatesthe new combination D. saxicola (Lamy) M.J. Cano, sincesaxicola is the oldest available epithet applicable to thespecies recently named D. fragilifolia.2. Barbula subulata var. longifolia Kindb. in Bull.Torrey Bot. Club 17: 89. 1890 ≡ Tortula subulatavar. longifolia (Kindb.) Paris, Index Bryol., ed. 2, 5:60. 1906 – Type citation: on the base of trees nearVictoria, Vancouver Island and on rocks at Yale, B.C.– Lectotype (designated here): [Canada] “British Columbia,Yale”, 1875, J. Macoun s.n. – S! (No. B63565)[= Tortula schimperi M.J. Cano & al. in Bot. J. Linn.Soc. 149: 346. 2005].Kindberg (in Macoun, 1890) described this taxonas an intermediate between T. angustata Lindb. andT. subulata, characterized by leaves, which are long andnarrow, acuminate and acute, distinctly denticulate above,papillose, yellow, bordered, with a long excurrent costa,but shorter in the perichaetial leaves. Three syntypescited in the protologue were found at S from the Kindbergherbarium; these were all collected by Macoun andlabelled as var. longifolia : one labelled “Vancouver Island,Victoria” (B63564), one from “Yale” (B63565), and thethird merely labelled “British Columbia” (B63563). Thepacket labelled as being from Victoria, Vancouver Island(B63564) contained two envelopes inside. That marked“b” is a specimen with smooth upper cells which correspondto those of T. mucronifolia, whereas the specimenmarked “c” reflects the description provided in the protologue.The other two syntypes from S also agree withthe diagnosis. The material from Yale and marked withthe number B63565 is chosen as lectotype of this name,because it is not mixed, unlike the syntype from Victoria,and it is better preserved than the syntype labelled “BritishColumbia” (B63563).The lectotype specimen shows a border of elongateand bistratose marginal cells, which are characteristic ofT. schimperi and Barbula subulata var. longifolia is heresynonymized under that species.3. Syntrichia alpina Brid., Muscol. Recent. Suppl. 4:97. 1819 (“1818”) ≡ Tortula alpina (Brid.) Arn., Disp.Méth. Mousses: 38. 1925 ≡ Tortula subulata subf. angustifoliaWarnst. in Hedwigia 52: 71. 1912 ≡ Tortulamucronifolia f. angustifolia Warnst. in Hedwigia 52:79. 1912 – Type citation: In Pyrenaeis ubi Junio 1803legimus et in Alpibus Helveticis ubi Thomas seriusinvenit. – Lectotype (designated here): [Switzerland]“Alpibus … Helvetia”, 1803, Thomas s.n. – B-Bridel![= Tortula subulata Hedw., Sp. Musc. Frond.: 122.1801].Bridel (1819) described Syntrichia alpina based upontwo specimens collected in the Pyrenees and Switzerlandand provided the following diagnosis: “caule erecto ramosofastigiato, foliis oblongo-lanceolatis, acutis strictis,supremis siccitate apice incurvis, capsulae cylindricae erecto cernuae operculo conico subulato”. The two syntypesmentioned in the protologue are deposited in theBridel herbarium in B. The sample from the Pyreneeshas only one plant, which lacks a capsule and does nothave an incurved apex. The specimen from Switzerlandhas all the characteristics referred to the protologue and isbetter preserved. For this reason, this latter specimen fromSwitzerland is chosen as lectotype of this name.After studying the type material, it is concluded thatSyntrichia alpina should be included in the variation ofT. subulata, since it has upper and middle laminal cellswith conspicuous papillae (in T. mucronifolia they aresmooth or, more rarely, have inconspicuous papillae) andelongate middle marginal cells (in T. mucronifolia theyare usually quadrate or short-rectangular).Warnstorf (1912) placed Syntrichia alpina in synonymyunder Tortula mucronifolia f. angustifolia Warnst.Warnstorf provided two different taxonomic treatmentsin this paper: an “Übersicht über den Formenkreis derTortula subulata” (pp. 69–71) and a ”Zweite übersichtlicheDarstellung …” (pp. 73–80). In the first overview,in which the variation is accommodated entirely underT. subulata, he published a Tortula subulata subf. angustifoliaWarnst., providing a description (in the key) butciting no specimens, whereas in the second treatmentwhich exactly follows the first taxonomic structure onlywith change of rank, the variation is accommodatedunder several species, including T. mucronifolia, underwhich “f. angustifolia Warnst.” appears. Although hegave no description of this name, the identical structuremakes it clear that it is an alternative name for whatearlier in the same paper (p. 71) he had called Tortulasubulata subf. angustifolia and, being prior to 1953,both names are validly published (Art. 34.2 of the ICBN[McNeill & al., 2006]). The two names, although necessarilyhomotypic themselves, are not necessarily homotypicwith Syntrichia alpina because Warnstorf (1912)provided a description of T. subulata subf. angustifolia950

TAXON 56 (3) • August 2007: 949–952Cano • Typification and taxonomy in the Tortula subulata complexand under T. mucronifolia f. angustifolia cited a Braunspecimen from Switzerland as well as indicating thathe has seen material (presumably the type) of S. alpina.The Braun syntype of T. mucronifolia f. angustifoliawas not found at B. Therefore, in order to simplify andclarify this unusual nomenclatural situation the name T.subulata subf. angustifolia (and hence T. mucronifolia f.angustifolia) is here lectotypified with the lectotype of S.alpina (see above). Consequently, these names becomehomotypic with Syntrichia alpina which is conspecificwith T. subulata.4. Tortula inermis var. submarginata Schiffn. in Verh.Zool.-Bot. Ges. Wien 69: 336. 1920 – Type citation:[Greece] Phokis: Delphi, an Böschungen, c. 600 m(no. 13) ebendaselbst, am Schatzhause der Athener,in wenigen Stengeln unter anderen Moosen (no. 18);Parnaß, Hochfläche “Livadhi” über 1200 m, Kalk(no. 84). – Lectotype (designated here): “Phokis, Parnass,Hochfläche ‘Livadi’, 1200 m, V. Schiffner s.n.(Universitätreise nach Griechenland 8–26 Apr 1911no. 84” – FH!; isolectotype: W! [= Tortula subulataHedw., Sp. Musc. Frond.: 122. 1801.]Schiffner (in Schiffner & Baumgartner, 1920) mainlydistinguished this taxon from the typical phenotypes of T.inermis by leaves with a margin of differentiated thickerwalled cells. In the Schiffner herbarium at FH, the threesyntypes of this name mentioned in the protologue weredetected. In W, two syntypes (no. 13 and no. 84) werefound. Numbers 13 and 18 show leaf margins that are regularlyrecurved from the apex to near the base with oblateupper and middle cell margins. No clearly differentiatedborder is distinguished. In fact, these specimens showthe typical characteristics of T. inermis var. inermis andthey are identified with that taxon. However, the syntypefrom Parnass (no. 84) shows irregularly recurved leafmargins (it is possible to find, in the same plant, leaveswith recurved margins in the middle part, from basalthird to the apex or upper third or totally plane, and evenin the same leaf one margin may be plane and anotherrecurved) formed by more quadrate or rectangular cells,although some oblate cells can be seen. It also showsthicker walled marginal cells. This, together with the lessrecurved or plane margins, provides a more differentiatedborder than in T. inermis. Therefore, syntype no. 84 ismore in accordance with the description provided in theprotologue and is chosen as lectotype of Tortula inermisvar. submarginata.According to Düll (1992) this variety has been recordedfrom Corsica, Crete, Cyprus, and Greece. It hasalso been detected in the Canary Islands, Morocco, Sicily,Spain, Syria, Turkey (Cano, 2006), and Armenia (Townsend,2005). According to Cano & al. (2005), this taxonshould be included in Tortula subulata.5. Tortula subulata var. compacta Schiffn. in Österr. Bot.Z. 48: 390. 1898 – Type citation: [Czech Republic] Inder Gegend von Prag ist auf Kalk- und Kieselschieferfelsen(z. B. bei Selc; ober Zámky etc.). – Lectotype(designated here): “Prag: Kieselschieferfelsen an derStrasse hinter Selc”, 22 Jul 1898, V. Schiffner s.n.– FH! [= Tortula subulata Hedw., Sp. Musc. Frond.:122. 1801].In PC there is one syntype labelled “Bei Prag” fromthe Schiffner herbarium. In the Schiffner herbarium inFH, three syntypes labelled as Prague (two from Selcand another from Zámky) were found. The syntype atFH collected “an der Strasse hinter Selc” is selected aslectotype, because it is the syntype better preserved andis in accordance with the protologue.According to Schiffner (1898), this taxon is characterizedby its compact turfs, its short and narrow capsule,and leaves which sometimes have margins recurved tonear the apex. All these characters are included in thevariation shown by T. subulata.ACKNOWLEDGEMENTSWe thank the curators of B, FH, GJO, NY, PC, S, and Wfor their valuable help with the location and loans of the typematerial; J. Muñoz for providing bibliography; J. Guerra for hisreview of a first version of the manuscript and an anonymousreferee for improving the manuscript. Financial support wasprovided by the Spanish “Ministerio de Educación y Ciencia”(Projects CGL2004-00788/BOS and CGL2006-00599).LITERATURE CITEDBridel, S.E. 1819. Muscologia Recentiorum Supplementum 4.A. Ukertum, Gothae.Cano, M.J. 2006. Tortula. Pp. 146–176 in: Guerra, J., Cano,M.J. & Ros, R.M. (eds.), Flora Briofítica Ibérica, vol.3. (Pottiales: Pottiaceae, Encalyptales: Encalyptaceae).Universidad de Murcia, Sociedad Española de Briología,Murcia.Cano, M.J. & Gallego, M.T. 2003. Lectotypification of twentynames of taxa referable to Tortula Hedw. (Pottiaceae, Bryo -phyta). Taxon 52: 611–618.Cano, M.J., Werner, O. & Guerra, J. 2005. A morphometricand molecular study in Tortula subulata complex (Pottiaceae,Bryophyta). Bot. J. Linn. Soc. 149: 333–350.Düll, R. 1992. Distribution of the European and Macaronesianmosses (Bryophytina). Annotations and Progress. Bryol.Beitr. 8/9: 1–223.Lamy de la Chapelle, E. 1875. Mousses et hépatiques de laHaute-Vienne. Rev. Bryol. 2: 49–101.Lara, F. 2005. Dialytrichia. Pp. 22–27 in: Guerra, J. & Cros,R.M. (eds.), Flora Briofítica Ibérica. Pottiaceae: Timmiella,Bryoerythrophyllum, Cinclidotus, Dialytrichia.Sociedad Española de Briología, Murcia.951

Cano • Typification and taxonomy in the Tortula subulata complexTAXON 56 (3) • August 2007: 949–952Lara, F. 2006. Pottiaceae: Dialytrichia. Pp. 264–269 in:Guerra, J., Cano, M.J. & Ros, R.M. (eds.), Flora BriofíticaIbérica, vol. 3 (Pottiales: Pottiaceae, Encalyptales: Encalyptaceae).Universidad de Murcia, Sociedad Española deBriología, Murcia.Macoun, J. 1890. Contributions to Canadian Bryology. – No.2. Bull. Torrey Bot. Club. 17: 83–90.McNeill, J., Barrie, F.R., Burdet, H.M., Demoulin, V., Hawksworth,D.L., Marhold, K., Nicolson, D.H., Prado, J.,Silva, P.C., Skog, J.E., Wiersema, J.H. & Turland, N.J.(eds.) 2006. International Code of Botanical Nomenclature(Vienna Code) adopted by the Seventeenth InternationalBotanical Congress Vienna, Austria, July 2005. A.R.G.Gantner Verlag, Ruggell. [Regnum Veg. 146]Mönkemeyer, W. 1927. Die Laubmoose Europas. Andreales–Bryales.In: L. Rabenhorst’s Kryptogamenflora vonDeutschland, Österreich und der Schweiz, vol. 4. AkademischeVerlagsgesellschaft, Leipzig.Podpěra, J. 1954. Conspectus Muscorum Europaeorum. ČeskoslovenskéAkademie Ved, Praha.Schiffner, V. 1898. Interessante und neue Moose der böhmischenFlora. Österr. Bot. Z. 48: 386–394.Schiffner, V. & Baumgartner, J. 1920. Beiträge zur Kenntnisder Flora Griechenlands. B. Leber- und Laubmoose. Verh.Zool.-Bot. Ges. Wien 69: 313–341.Schimper, W.P. 1876. Synopsis Muscorum Europaeorum PraemissaIntroductione de Elementis Bryologicis Tractante,vol. 2. E. Schweizerbart, Stuttgart.Stafleu, F.A. & Cowan, R.S. 1979. Taxonomic Literature, 2nded., vol. II. H–Le. Bohn, Scheltema & Holkema, Utrecht.[Regnum Veg. 98]Townsend, C.C. 2005. Mosses from the Caucasian region andeastern Turkey. J. Bryol. 27: 143–152.Warnstorf C. 1912. Der Formenkreis der Tortula subulata(L.) Hedw. und deren Verhältnis zu Tortula mucronifoliaSchwgr. Hedwigia 52: 65–80.Wijk, R. van der, Margadant, W.D. & Florschütz, P.A. 1959.Index Muscorum, vol. 1 (A–C). International Bureau forPlant Taxonomy and Nomenclature of the InternationalAssociation for Plant Taxonomy, Utrecht. [Regnum Veg.17]Wijk, R. van der, Margadant, W.D. & Florschütz, P.A. 1969.Index Muscorum, vol. 5. (T–Z, Appendix). InternationalBureau for Plant Taxonomy and Nomenclature of theInternational Association for Plant Taxonomy, Utrecht.[Regnum Veg. 65]952

Typification of the names of some infraspecific taxa in ... - Pottiaceae

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