OPHRYDEX. 291 
b. Labellum incisum, nunc tantum crenulatum. 
30. PLATANTHERA Cristata. 
P. caule folioso, folio inferiore longo lanceolato ceteris minoribus acumi- 
natis, spicà oblongà densà multiflorà, bracteis acuminatissimis florum 
longitudine, sepalo supremo ovato lateralibus deflexis rotundatis, petalis 
rotundatis crenatis, labello ovato margine lacero calcari clavato oblique 
truncato subzquali. 
Orchis cristata. Mich. Amer. bor. 2. 156. Willd. sp. pl. 4.9. Pursh.2. 585. Elliott, Sketch, 
2. 483. : 
Habenaria cristata. R. Br. in Hort. Kew. 5. 194. Lodd. Bot. Cab. t. 1651. Beck. Bot. M. 
and N. Amer, 348. 
Hab. in locis udis ad margines paludum, cum P. blephariglotti et ciliari 
intermixta, in America septentrionali: Carolina, Elliott ; Pennsylvania, 
Pursh ; Alabama, Drummond. (hab. s. sp.) 
Flores lutei. Gymnadeniz lutez simillima. 
31. PrArANTHERA holopetala. 
P. caule folioso, foliis ovato-lanceolatis acutis, spicà laxà multiflora, 
bracteis lineari-lanceolatis ovarii longitudine, sepalis suborbiculatis ob- 
tusis supremo galeato, petalis linearibus acuminatis obtusis integerrimis, 
labello lanceolato margine lacero calcare filiformi dupló breviore, ovario 
rostrato. 
Habenaria blephariglottis. Hooker! Exot. Fl. t. 87, nec aliorum. 
Hab. in Canada, Goldie. (hab. s. sp. comm, cel. Hooker.) 
Flores albidi. 
I conceive that this plant is unknown to American botanists : for they 
all agree in the difficulty of distinguishing P. blephariglottis from ciliaris ; 
Which would not be the case if they knew this species, in which the petals 
are entire. 
32. PrATANTHERA blephariglottis. 
P. caule folioso, foliis inferioribus lanceolatis canaliculatis sensim de- 
crescentibus, spicà oblongå multiflora densa, bracteis foliaceis linearibus 
acuminatis floribus brevioribus, sepalis rotundato-oblongis lateralibus 
reflexis, petalis spathulatis dentatis, labello oblongo plano Ren 
medio papilloso calcare recto pendulo triplo breviore, ovario longissim 
rostrato. 
Orchis blephariglottis. Willd. Sp. Pl.4, 9. 
abenaria blephariglottis. Beck. Bot. N. and M. Amer. 348? 
Hab. in America septentrionali: Pennsylvania, Muhlenberg; Canada, 
Schweinitz. (hab. s. sp. comm. cel. Bentham.) 
Flores albidi. : 
This plant is well defined by Willdenow ; but it appears to be little 
known to the writers on North American botany, who apparently mistake 
for it what I conceive is a white variety of Pl. ciliaris. In many respects 
it is very like that species; but its flowers are smaller, = AE is ire 
more compact, the lip is flat, ovate-oblong, with short a ane y "ps : 
ciliz, amd the anther is at least as tall as it is broad, w e that ? 
- ciliaris is always, as far as I have seen, very much depressed, so as to 
be greatly broader than tall. 
