330 ORDER 137. ORCIIIDACE/E. 



6 S. graminea Lindl. Lvs. below lance-linear to linear, the cauline mere sheaths; 



spike dense, much twisted ; flowers white, 3 5", pubescent, scarcely ringent ; lip 

 oblong-ovate, crisped, obtnse. Wet meadows. June Aug. (8. tortilis C-B.) 

 S S. brevifolla Chapm. Lowest leaves elliptical, evanescent, cauline bract-like ; 

 flowe 5 15, in a nearly straight row, ringent, 3 4" ; lip entire. S. 



7 5. graclJls Bigel. Lvs. all radical, ovate to oblong, fugacious; scape very slender, 



8 18', with a few bracts ; flowers 3 4", in a nearly straight row, pure white ; root 

 fasciculate ; plant glabrous. Woods : common. July, Aug. 



8 S. simplex Gr. Lvs. all radical, fugacious ; scape 59', flowers very small (1 2") 



in athin 1-sided spike; lip obovate-oblong. Dry, N. J. (Porter), and S. 



13. GOODYERA, Br. RATTLESNAKE PLANTAIN. Spike and perianth 

 as in Spiranthes. Lip sessile, concave or sack-like or even spur-like at 

 base, contracted at the end to a reflexed, channelled point. H Root-stock 

 creeping, branching. Leaves ovate, on sheathing petioles. 



* Leaves radical, generally netted with white veins. Lip not spurred Nos. 1, 3 



* Leaves cauline, uniformly green. Lip spurred at the base behind No. 3 



1 G. Menzlesil Lindl. Lip concave at base, gradually narrowed and folded at apex ; 



leaves elliptic-ovate ; scape 9 12' ; spike loose-flowered ; flowers pubescent (as are 

 Nos. 2 and 3), fruberect. Woods, N. Y. to Mich. (Dr. Leidy) and Oreg. ! July, Aug. 



2 G. repens Br. Lip saccate-inflated at base ; leaves ovate, beautifully netted ; scapt 



6 12' ; flowers ovoid, nodding, in 1 row, which is more or less spiral ; perianth green- 

 ish, about 2" long and nearly as wide. Woods. June, July. (G. pnbescens Br.) 



3 G. quercicola Lindl. Rooting on the bark of Oaks, <fcc. ; stem leafy; Ivs. lance- 



ovate, thin ; spike glabrous, dense, 6 20" ; sheaths and bracts membranous ; lip 

 ovate at apex, the spur pouch-like, half as long as the ovary. Fia. to La. 612'. 



14. PONTHIEVA, Br. Lip on the upper or inner side, ovate, spread- 

 ing, and with the other petals inserted into the middle of the column. 

 Anthers with 4 pollinia. Otherwise like Spiranthes. 



P. glandulosa Br. Lvs. radical, oblong-oval; root fasciculate; scape If, bracted, 

 with a spike of many greenish pubescent fls. Woods, S. Sept., Oct. (Cranichis N.) 



15. CALOPOGON, Br. GKASS PINK. Sepals and petals similar, dis- 

 tinct. Lip on the upper (inner) side (the ovary not twisted), unguiculate, 

 bearded. Column free, winged at the summit, ll Corm bearing a grass- 

 like leaf, and a scape with several showy flowers. 



C. pulchellns Br. Leaf linear, 8 12' by 6", veined; fls. 3 8, large, purple; lip spat 

 ulate, crested with colored hairs, erect over the column. Wet meadows. June, July. 



16. POGONIA, Juss. Perianth irregular, its pieces distinct. Lip ses- 

 sile or unguiculate, hooded, bearded inside. Column wingless, free. Anth. 

 terminal, lid-form, with 2 pollinia. U 



$ Sepals about equal, and similar to the petals, light purple. Lip scarcely lobed.. Nos. 1, 9 

 Sepals much longer than, and unlike the petals, dark brown. Lip 3- lobed . .Nos. 3, 4 



1 P. opliioglossoides N. Root fibrous ; stem 9 16', with an oval-lanceolate leaf 



near the middle, and a leaf-like bract near the single large pale-purple flower ; lip 

 crested and fringed, as long as the sepals and petals. Swamps. June, July. 



2 P. peiidiil * Lindl. Three-birds. Root tuberous ; stem 4 8', with 4 8 small scat- 



tered leaves and 3 (1 4) drooping bird-like flowers 1' long. Woods : rare. August. 



3 P. divarlcata Br. Stem 1 2f, erect, with 2 linear-oblong Ivs. and 1 terminal lerg 



flower; sepals linear, recurved at apex, l t ' long; petals lanceolate, pink-colorL 

 acnn.iuate, 1'. lip a little longer. Swamps, Del. to Fla. April, May. 



