472 NEOTTE£Z—SPIRANTHIDE. 
Hab. in Texas, Drummond, Andrieux. (hab. s. sp.) 
This seems distinct from S. gracilis, to which it is the most nearly allied, 
in its spikes being very dense and covered with coarse short hairs ; the lip 
too has quite a different form. Flowers are stated by Andrieux to be 
purple. 
The var. 6 is much stouter and stronger than the other, but does not 
seem specifically distinct. My specimen is two feet high, while the 
original species is not a foot high. 
30. Spirantues gracilis. Hook. fl. bor. am. 2. 202, t. 203. 
S. glaberrima, foliis omnibus radicalibus ovatis petiolo longioribus, scapo 
tenui gracili, spicà pluries spirali, bracteis acuminatis ovario longioribus, 
labello oblongo-lanceolato crispo supra pubescente: callis elongatis 
curvis intramarginalibus. 
Neottia tortilis. Pursh. fl. am. sept. 2. 589, nec Swartzii. 
Ophrys exstivalis. Michaux. bor. am. 2. 157. 
Spiranthes tortilis. Beck. Bot. north. st. 343. 
Hab. in Americd septentrionali, a Canada ad Louisianam ; etiam in Bahamis, 
herb. Hooker. (hab. s. sp.) 
Apparently a very common species through the whole of the American 
union ; for I have specimens from Drummond, without number, which in 
no respect seem to differ from the Canadian plants. The Bahama plant 
is smaller than those from the United States, but does not appear to be © 
different. 
31. SrinANTHES Beckii. 
S. glaberrima, foliis omnibus radicalibus anguste ovalibus petiolo «qualibus, 
scapo stricto filiformi, spicà tenui spirali, bracteis ovatis apice setaceis 
ovario puberulo longioribus, labelli trilobi laciniis lateralibus erosis 
intermedio truncato-rotundato glanduloso. 
Neottia tortilis. Elliot. carol. 2. 491. 
Limodorum precox. Walt. carol. 221. 
Spiranthes gracilis. Beck. Bot. north. st.343. 
Hab. in America septentrionali; Massachussets, sylvis siccis, Beck; nove 
Aureliane, Drummond 332. (hab. s. sp.) 
A very slender species, with stems 1-13 foot high, perfectly glabrous. 
The flowers are very minute. The lip has a remarkably, lax cellular tex- 
ture, and is quite different from that of the northern S. gracilis. 
To this section probably belongs, 
39. Neottia vaginata. Humb. Bonpl. et Kunth. n. g. et sp. plant. 1. 331. 
Hab. in regione temperata Peruvie, arboribus proceris opacissima, prope 
Loxam, Gonzanamam et Malacates, alt. 1060. hex. Floret Julio. 
Planta terrestris? habitu Serapiadis Lingue. Radix ignota. Caulis erectus, 
simplex, sexpollicaris, vaginatus. Vagine oblonge, acute, concave, 
medio ventricose, tenuissim? membranacee, striate, glabre, fusces- 
centes, pollicares, approximate; pauce inferiores foliifere. Folia 
ovata, acuta, plana, reticulato-nervosa, glabra, quatuor aut quinque 
lineas lata, exsiccatamembranacea. Flores pauci, terminales, subspicati, 
