AGGREGATE. = £18) PLEUROTHALLIS. 
§ V. AcerEGaT®; foliis basi angustioribus ; caule tereti v. angulari; 
floribus fasciculatis. 
A. Labellum — abrupté deflexum, in — superficiales protrusum 
Ne pes cylindracea, truncata, basi vix producta, stigmate verti- 
E vestelio erecto elongato sae aS An genus proprium ?) 
73. P. geniculata (P. Hartwegii, Lindl. in Bot. A — misc.) ; Sai 
coriaceo lanceolato undulato, | rag ovato nano gmp rrulato 
Hartweg (Loxa, on mountains), h. s. sp.—— Leaf x 2", “ohaneatiod at ‘tho 
base. Flowers large. Lip with a "yale of incurv at unequal humps on each 
side 
74. P. Archidone ; = —— lanceolato plano, labello cirenlari nano 
yo ngricene “Sian, Jameson ( isha near Archidona, on rocks by fos river 
side), h. s, sp.—— A much Maaalice ant than the last. Flowers also much 
weer aes Lip with a pair of erect onc 2-lobed humps on each si 
B. Labellum rectum planum. 
1. Caulis vagine manicate v. hispide. 
76. °F. mesehcteagere Seas f. in ie oe Jan. 15, 1854); folio 
angusto lanceolato, ore imbri vaginis inferioribus hispidis, 
li = —— poe ‘sbasnaiies sla Sas majore bidentato, petalis 
oblongo-lanceolatis apice filiformibus sepalo dorsali subzqualibus, labello 
ligalato blavetan lanai utrinque dente valide falcato aucto—— Caracas, 
W: r; Venezuela, Fendler, ben; h. s. sp.——A ta Gaden plant; some- 
pes sane stem a shee er ong, and pate sonst at the base of the 
leaf whence jong succulent bres a down. owers green with numerous 
brown - id t filiform 
nearly as long as the dorsal sepal are very peculiar (Golan 
extremities, and 
oblong, undivided, with a continuous thin edge.) 
76. P. exasperata; folio — lanceolato canle dupld breviore vaginis 
trensvarul scaberrimis, sepalis 3 biogas: acuminatis equalibus, Tabet ee 
ovarii costis 3 asperrimis tribusque scabris—— Venezuela, Fendler 1490. h. s, 
Sp. ——— like — last but far more scabrous. Even the 2 a and 
racts are hairs. My flowers are past, and the lip has 
. P. Beyrichii (Re sien in Linnea 29); “vaginis caulis 4-5 
papillis filiformibus in nerv margine, folio 6 oblongetineny sepalo dor — 
oblongo acuto lateralibus ealorities denticulatis. ineari basi utrin: 
angulato —. ete ”___. Brazil, Beyrich (New hanno Posdieies 
ls purple. white. a of stem 4-5. (Antherbed 3. 3-lobed, the 
2 ?_—Described from a plant own origin. Leaf — 
3” ~5’" x 12"’—-13’”.  Bracts white ; qin purple; sepals dirty yellow, 2/”; 
a mye palew lip deep erate: Klotzsch, Can this be P. pete 
