NEOTTEJE— SPIRANTHIDA. 481 
Radices terrestres, fasciculate, carnose. Folia radicalia oblongo-lanceolata, 
suberecta, carnosa, plicis nullis, scapo 3-pld breviora. Scapus strictus, 
fere 2-pedalis, pubescens, squamis foliaceis viridibus distantibus vagi- 
natus, Racemus pedalis et ultra, deusus, cylindraceus. Bracteze cana- 
liculate, subulate, florum fere longitudine. | Ovarium pubescens. 
Perianthium cylindraceo-convolutum, sepalis viridibus lineari-lanceolatis, 
versus apicem latioribus, superiori petalis agglutinato, lateralibus arcu- 
atis, basi valde obliquis, antice paululüm sub labello connatis. Labellum 
album, cum columna parallelum, lineare, canaliculatum, sessile, basi 
ecallosum, paulo dilatatum, medio pubescens, apice ovatum, dilatatum. 
Columna libera, elongata, semiteres, antice producta, apice ovata, stig- 
mate cordiformi, rostello acuto, vix bifido, clinandrio retrorstim declivi, 
immarginato. Pollinia 2, bisulea, pulverea, caudiculà brevi, glandulà 
ovali. 
CCLXX. PELEXIA. 
Pelexia. Poit, MSS. Richard, orch. eur. 37. Endl. gen. no, 1554. Synassa. Lindi. 
in Bot. Reg. 1618. Endl. no. 1564. 
Perianthium ringens. Sepala lateralia labello supposita, patula, basi in 
cornu adnato aut libero decurrentia, discreta v. demum in saccum 
connata; dorsale cum petalis agglutinatum. Labellum canaliculatuin, 
columná parallelum, basi unguiculatum, ungue intra sepalorum latera- 
lium bases incluso, ecalloso. Columna nana, teres ; rostello indiviso, 
acuminato, nunc in setam corneam producto. Anthera dorsalis, sessilis, 
bilocularis, apiculata. Pollinia 2, pulverea ; glandulà separabili, ros- 
tellum haud findente. Herbe terrestres, Americze calidioris, leviter 
pubescentes, radicibus fasciculatis. Folia oblonga, longe petiolata. 
Scapus terminalis. Flores spicati, distantes, herbacei; bracteis longis 
acuminatis. 
This genus differs from Stenorhynchus in its membranous rostellum, 
and in little besides; and might perhaps be best considered a section of 
that genus. Its habit is however more that of Spiranthes, and the species 
are easily recognized ; for the horn into which the sepals and lip are com- 
bined is more conspicuous in this genus than in Stenorhynchus. 
Upon reconsideration of the genus formerly proposed by me under the 
name of Synassa, I see that it must be united with Pelexia. 
A. Eupelexiz ; cornu omnino adnato. 
1, Pevexia spiranthoides. Lindl. in Bot. Reg. t. 985. 
s subundulatis petiolo brevioribus, spicà elongatà 
is lanceolatis acuminatis patulis 
libus dependentibus, labello apice 
cornu adnato sepalis parum 
P. foliis ovato-lanceolati 
multiflora laxA, bracteis membranace 
floribus longioribus, sepalis acutis latera 
rotundato apiculato emarginato 2-lamellato, 
longiore. 
Satyrium adnatum. Swartz. prodr. 118. 
Neottia adnata. Id. fl. Ind. occ. p. 1409. 
Hab. in Jamsice et Hispaniole sylvis int 
nonin St. Vincentii, Macrae. (v. v. c.) 
September, 1840. RRR 
erioribus umbrosis, Swartz ; nec 
