leONES PLEUROTHALLlDlNARUM ADDENDA ET CORRIGENDA

Page 60. barbulata. Remove from synonymy: Pleurothallis abjecta Ames and Pleurothallis ciliilabia Schltr. Page 204. The authority and citation should read: Pleurothallis racemiflora Lindl. ex Hook., Exotic Flora 2: 123. 1824, exclude from syn. Dendrobium racemiflorum Sw. Page 216. Acostaea trilobata. NAPo should read PASTAZA. Page 260. Pleurothallis peduncularis. Add to synonymy: Pleurothallis as­ pasicensis Rchb. f., Bonplandia 3: 73. 1855. Page 266. . Add to synonymy: flavida Focke, Tijdschr. Natuurk. Wetensch. Kunsten 2:202. 1849; Pleurothallis flavida (Focke) Lindl., Folia Orchid. Pleuroth. 44. 1859. Page 272. Pleurothallis revoluta. Add to synonymy: Stelis revoluta (Ruiz & Pav.) Willd., Spec. PI. 4: 140. 1805. Page 284. Pleurothallis sclerophylla. Add to synonymy: Pleurothallis race­ mosa Cogn., Flora Brasiliensis 3 (4) : 554. 1896. Page 286. Pleurothallis secunda. Remove from synonymy: Pleurothallis bicornis Lindl., and Humboldtia bicornis (Lind!.) Kuntze. Page 294. Pleurothallis spiralis. Add to synonymy: Pleurothallis longerepens Schltr., Repert. Spec. Nov. Regni Veg. Beih. 8: 129. 1921. Page 312. The described on page 312 and illustrated on page 313 is Pleurothallis octomeriae Schltr. I erred by including it in the syn­ onymy of the Mexican P. octomerioides Lind!. which will be de­ scribed and illustrated in a forthcoming issue. Except for the description of the plant figured, the text on page 312 should be changed accordingly: Pleurothallis octomeriae Schltr., Repert. Spec. Nov. Regni Veg. Beih. 17:21. 1921. Pleurothallis cerea Ames, Sched. Orchid, 4: 19. 1923. ETYMOLOGY: Named for the similarity of the to the Octomeria. Octomeria from the Greek octo, "eight," and meros, "part," referring to the eight pollinia. TYPE: PANAMA: CHIRIQUI: epiphytic in ravines, alt. ca. 1700 m, C. W. Powell 252. DISTRIBUTION: Nicaragua, Costa Rica, and Panama. This species resembles an Octomeria not only because of its habit, but also. because the petals are as large as the sepals. Pleurothallis octomeriae is closely allied to the Mexican P. octomerioides Lipdl.Neither has been reported from intervening Guatemala and Honduras. PleurOthallis octomeriae maybe distinguished from its relative by the short, swollen segments of the rhizome, the glabrous sepals, petals which are generally wider below the mid­ dle, and a lip which is minutely verruculose. 426