ha bex aria ORCHIDACE^E 629 



GYEOSTACHYS 



6-30 inches high : leaves oblong-lanceolate to lanceolate or linear, 2-6 

 inches long, gradually reduced upward and passing into the bracts of the 

 narrow sparsely-flowered spike: flowers small, greenish yellow: lateral 

 sepals ovate, obtuse, about 2 lines long, the upper one broadly ovate or 

 nearly orbicular, equalling the lateral ones: petals lanceolate, a little 

 longer than the sepals : lip linear, longer than the petals : spur short and 

 saccate, dilated downward : capsule oblong, half-inch long. In mountain 

 marshes, California to Alaska. 



* * * Stem slender and scape- like, with a pair of large green leaves 

 at base: flowers comparatively large, greenish, the lip longer than the 

 petals. 



H. orbiculata Torr. Comp. 318. Scape stout, bracted, rarely bearing 

 a small leaf, 1-2 feet high: leaves orbicular, spreading flat on the ground, 

 green and shining above, silvery beneath, 4-7 inches in diameter: raceme 

 loosely many-flowered : pedicels 5-6 lines long, erect in fruit : flowers 

 greenish-white; upper sepal short and rounded, the lateral ones spreading, 

 falcate-ovate, obtuse, 4-5 lines long: petals smaller: lip oblong-linear, 

 entire, obtuse, white, about 6 lines long: spur much longer than the ovary, 

 often 18 lines long : anther-cells prominent, converging above : glands 

 small, orbicular, about 3 lines apart. In rich woods. Washington and 

 Idaho to Brit. Columbia and across the Continent. 



Tribe 3 Neottiex Lindl. Orch. JfJf.1. Stems mostly leafy and 

 flowers spicate or racemose. Anther one, connate with the column 

 and persistent upon its face immediately above the stigma. Pollen- 

 masses 2, of coarse grains united by an elastic web, each mass at- 

 tached at base by a stall' to a viscid gland. 



4 GYROSTACHYS Pers. Syn. ii, 511. (1807.) 

 SPIRAXTRES Richard. 



Erect herbs with fleshy-fibrous or tuberous roots, leafy stems 

 and. small spurless flowers in l-3-row T ed more or less twisted spikes. 

 Perianth ringent, oblique on the ovary : the lateral sepals some- 

 what decurrent, the upper and the petals coherent: lip sessile or 

 nearly so, the base embracing and adherent to the column and 

 with a callous protuberance on each side, the dilated summit 

 spreading and undulate, usually entire. Column very short, ob- 

 lique, terminating in a short erect stipe, bearing the ovate stigma 

 on the face, the beak above usually acuminate and at length bifid 

 by the separation of the oblong and viscid gland. Anther sessile 

 or nearly so, at the base of the stipe behind, mostly acuminate. 

 Pollen-masses 2, thin and powdery, becoming attached above the 

 gland. 



G. Roinanzofllana Mc M. Met. Minn. [171. Spiraiithes Romanzoffiana 

 Cham. Glabrous, rather stout 4-18 inches high, leafy, bracteate above: 

 leaves oblong-lanceolate to linear: spike dense, 3-ranked, conspicuously 

 bracted, 1-4 inches long: perianth white, about 4 lines long, curved, the 

 sepals and petals all connivent ; lip recurved, ovate-oblong, contracted De- 

 low the narrower wavy-crenulate summit : callosities smooth, often obscure: 

 the oblong-linear gland and very slender bifid beak % of a line long: capsule 

 oblong, 3-4 lines long. On wet banks California to Alaska and across the 

 Continent. 



G. porrifolia Kuntze, Spiranthes porrifolia Lindl. Glabrous, rather 



