Transfer of Four Peruvian Altamiranoa Species to Sedum (Crassulaceae) Joachim ThiedeBotanical Institute, University of Cologne, GyrhofstraBe 15, D-50931 Cologne, (ermany.
[email protected] Henk 't HartDepartment of Plant Ecology and Evolutionary Biology, Utrecht University, Padualaan 8, NL-3584 CH Utrecht, The Netherlands.
[email protected] \Tr. Recently Altamiranoa Rose (= Villadiasect. Altamirannm (Rose) R. T. Clausen) was mergedwith Sedum L. For four Peruvian Altamiranoa specieswithout valid naimes in Sedum we propose three newcombinations: Sedum decipiens (Baker) Thiede & 'tHart. Sedum reniforne (H. Jacobsen) Thiede & 'tHart, and Sedum weberlbueri (Diels) Thiede & 't Hart,and one new name, Sedum plicatum Thiede & 't Hart.A lectotype is designated for Cotyledon decipiens Bak-er, the basionymn of Sedum decipiens. Rose (in Britton & Rose, 1903: 3) described thegenera Altamiranoa Rose and Villadia Rose to ac-commodate some Mexican Crassulaceae with sym-petalous flowers. Previously these species had mostlybeen classified in Cotyledon L., the hold-all of sym-petalous Crassulaceae. Berger (1930) included bothgenera in subfamily Echeverioideae A. Berger, butnoted that several Alltamirnoa species are very sim-ilar to Sedum. Berger (1930) considered Altamiranoaand Villatdi to be closely related though they differin the structure of the inflorescences. Altamiranoahas predominantly cymose inflorescences, whereasthose of Illadia are usually spicate, racemose, or,most frequently, thyrsoid. Friiderstrim (1936) moreor less accepted Rose's concept, but transferred sev-eral Altamiranoa species to Sedum. Baehni andMacbride (in Baehni, 1937), on the other hand, unit-ed Altaiiranoa and Villadia, and Clausen (1940)distinguished Altamiranoa as a section of V1lladia.Baehni's and Clausen's classifications have beenwidely accepted until recently, when Moran (1996)merged Villadia sect. Altamiranoa (Rose) R. T. Clau-sen (= Altmniranoa) with Sedum. In particular theoccurrence of intermediate forms bridging the gapbetween Alltamiranoa and Sedum, and his doubtsabout the monophyly of Clladia in the sense ofBaehni and Macbride and (lausen, prompted Mor-an's decision. Moran (1996) already made the nec-essary new combinations under Sedum for threeNo\ot 9: 124-125. 1999.Mexican Villadia (sensu lato) species. Here we com-plete the transfer of 4Atamrirana to Sedum with threenew combinations and one new name for four Pe-ruvian species.Sedum decipiens (Baker) Thiede & 't Hart, comb. nov. Basionym: Cotyledon decipiens Baker, Re-fug. Bot. 3, t. 200. 1870. Echeveria decipiens (Baker) E. Morren, Belgique Hort. 24: 159. 1874. Altamiranoa decipiens (Baker) Friider-strim, Acta Horti Gothob. 10, App.: 145. 1936. lilladia decipiens (Baker) H. Jacobsen, Natl. Cact. Succ. J. 13: 76. 1958. TYPE: Peru. Sine loco, sine datum, Farrs s.n. (holotype, not extant); Refug. Bot. 3, tal. 200. 1870 (lec-totype, designated here). The species is known only from the type collec-tion and is as yet not validated by additional col-lections (Brunner, 1993: 376). No type material isextant at Kew (where J. G. Baker worked), at theBritish Museum (Baker described many speciesfrom specimens deposited at BM), or at Oxford (ac-cording to a note in the protologue Baker appar-ently obtained living specimens of Farris's collec-tion via W. W. Saunders, whose herbarium is nowkept at OXF). Therefore, we designate the excellentfigure (tab. 200) accompanying the diagnosis as thelectotype of Cotyledon decipiens Baker.Sedun plieatun Thiede & 't Hart, nom. nov. Re-placed name: Cotyledon stricta Diels, Bot. Jahrb. Syst. 37: 410. 1906. Altamiranoa stricta (Diels) A. Berger, in Engler & Prantl, Nat. Pflanzenfam. ed. 2, 18a: 470. 1930. Villadia dielsii Baehni & J. F. Macbride, Candollea 7: 285. 1937 (1nom. nov. pro Cotyledon stricta Diels due to VIlladia stricta Rose, 1905). TYPE: Peru. Dep. Ancahs (Ancachs): pr. Caraz in rupestribus camporum, 2200-2500 m s.m., flor. m. Maj. 1903, Weber-bauer 30XK) (holotype, B).
BioStor
