490 CLXIX. OROHIDEJE. [Epidendrea. 
Srsckumua, Lindl. Gen. et Sp. Orch. 8, species includit plures inter minores, a genere olim 
separatas ob calycis labium inferius (e lobis 2 lateralibus connatis) basi evidentius gibbum, . serius 
tamen ab auctore ipso in seriebus diversis Pleurothallis distributas. 
P. peduncularis, Hook. Journ. Bot. iii. 308, t. 9, e Guatemala, errore quodam & Lindleyo ad P. 
aphthosam relata, est, P. ophiocephala, Lindl., rite a Reiehenbachio cum P. Miersii, Lindl., ad Restre- 
piam translata. .P. Gardneri, Lindl, species Brasiliensis P. Miersii similis, est pariter Restrepie 
species polliniis 4. 
2. Stelis, Swartz in K. Vetensk. Acad. Nya Handl. Stockh. xxi. 248 ; Fl. Ind, Occid. iii. 
1549.—Sepala sepius subzequalia, lata v. triangularia, patentia, breviter v. alte connata, 
rarius angustiora et minus patentia v. posticum paullo longius v. altius solutum. - Petala 
multo breviora, lata, ginibus i iis, col et labellum sspe subincludentia. 
Labellum ad basin columnze sessile, petalis :equale et subsimile v. gustius et interd 
breviter 3-lobum. Columna labello zequilonga v. brevior, nunc brevissima, lata, superne 
sepius crassior truncata, v. antice utrinque angulo v. lobo carnoso instructa, apoda; 
clinandrium parum prominens, truncatum.  Anthera terminalis, opercularis, incumbens, 
semiglobosa, 2-locularis; pollinia 2, cerea, ovoidea v. pyriformia, apice ssepius visco 
parco connexa. Capsula parva, ovoidea v. oblonga, erostris, sspe 3-quetra.— Caules 
ccespitosi v. caulis repentis rami simplices, apice l-phylli, infra folium szpe 1-3-vaginati, 
non pseudobulbosi. Folium cori: ; basi sepe in petiolum contractum, petiolo smpe 
concavo v. canaliculato et interdum prope basin articulato, non tamen in vaginam clauso. 
Flores parvi nunc minimi, in racemo elongato ad basin folii terminalis breviter pedicellati, 
secundi, rarius subdistichi. Bractez alternze, sspe distichze, nunc minime concave, 
nunc ocreiformes v. laxc pedicell quantes, rarius elongat. inat 
Species editze ad 150, Amerieze tropieze incole, a Brasilia et Peruvia usque ad Indiam occidentalem 
et Mexicum extense. Lindl. Fol. Orchid. 1858.  Reichb. f. in Walp. Ann. vi. 198; Orch. Centr. 
Amer. 57, 93, t. 8, 9; Xenia Orch. t. 60, f. 7, et iii. 25; in Wawra, Pr. Max Heise, Bot. t. 104, f. 3; 
Otia Hamb. 19; in Linnea xli.7,118. Jacg. Stirp. Amer. t. 183, f. 2 (Epidendrum). Popp. et 
Endl. Nov. Gen. et Sp. t. 79 ad 81. — Sm. Exot. Bot. t. 76. Hook. Ic. Pl. t. 62 ; Exot. Fl. t. 158. 
Bot. Mag. t. 3975, 6521. — Bot. Reg. t. 985. — Lodd. Bot. Cab. t. 442, 1011. 
Genus in sectiones 2 dividitur: 1. Eustelis, Lindl. ( Trivalves, Reichb. f.), sepalis :equalibus zquali- 
terque patentibus; et 2. Dialissa, Lindl. (Bivalves, Reichb. f£), sepalis Stepe minus patentibus v. 
angustioribus, postico nune longiore nunc altius soluto. Drarissa, Lindl. in Ann. Nat. Hist, ser. 1, 
xv. 107. Lindley insuper in Fol. Orchid. species nonnullas a Zialissis typieis ab Eustele parum 
distinetis separavit sub sectione tertia Labiata, sepalis angustioribus minus ) ibus obseure sub- 
bilabiatis. -Hz quodammodo Pleurothalli accedunt, etsi petalis labelloque bene distincte, Species 
Stelidis preterea variant column: forma, lobis lateralibus v. brachiis plus minus distinctis. S.disticha, 
Popp. et Endl. l.c. t. 81, insignis est calyce late campanulato-patente obscure sinuato-3-lobo. In 
S. purpurascente, A. Rich., species Mexicana, Lindley pollinia 8 vidit, quod tamen adhue ex aliis 
b lonibus non confi in flore a nobis examinato anthera jam delapsa fuit; characteres 
ecteri omnino Stelidis et specimina illis S. Liebmanni, Reichb. f., simillima sunt. 
3. Physosiphon, Lindl. Bot. Reg. sub n. 1797.—Sepala basi in tubum ovoideum v. 
urceolatum connata, superne zqualiter libera, patentia. Petala in fundo tubi nana, 
carnosa, obovali-cuneata. Labellum parvum, cum basi columnze articulatum, oblongo- 
cuneatum, concavum, medio utrinque lobo brevi auctum. Columna subteres, exalata, 
apoda v. in pedem brevem producta ; clinandrium breve, scepius obtuse 3-lobum. Anthera 
terminalis, op laris, i bens, decidua ; pollinia 2, cerea, ovoidea, apice visco parco 
subcoh:zerentia.— Caules in rhizomate repente breves, simplices, apice 1-phylli, infra folium 
1-2-vaginati, non pseudobulbosi. Folium cori. , basi tat Flores parvi, in 
racemo elongato ad basin folii terminalis pedunculati, plures, breviter pedicellati, secundi. 
 Bractec breves, ocreatoe. 
Species ad 4, Americee tropieze a Brasilia usque ad Mexieum incole. Hook. Ze. Pl. t. 508. — Bot. 
Mag. t. 4869. Lodd. Bot. Cab. t, 1601 (Stelis). Saund. Ref. Bot. t, 96. — Reichb. J-. in Bot. Zeit. 
1866, 385. 
Genus Stelidi valde affine, nec differt nisi perianthio exteriore urceolato-tubuloso. 
