Ooodijera. ORCHIDACEiE. 135 



7. H. Cooperi, Watson, 1. c. Stout and tall (3 feet high) : flowers numerous, 

 spicate, yellowish-green : sepals and petals conuivent at base, rather thick, equal, 

 2 lines long ; lateral sei)als oblong, the upper ovate ; lip ovate, truncate at base, 

 with a broad claw ; spur short and thick : glands orbicular : beak of the stigma tri- 

 angular : capsule oblong, sessile, 4 or 5 lines long. 



The description is based upon a single specimen, collected on clay hills near San Diego by Dr. 

 Cooper. Api)aiently very distinct. 



8. H. gracilis, Watson, 1. c. Very similar to //. spars(flora, but rather taller 

 and stouter (2 or 3 feet high) and the flowers more numerous in the loose elongated 

 spike : lip linear, shorter, but exceeding the sepals ; spur short and saccate, dilating 

 downward. — Platauthera gracilis, Lindl. Orch. 288. 



Oregon and Washington Territory {Dow/las, Lyall, Hall, Newberry), and probably in Northern 

 Calilbrnia. Distinguished especially by the saccate spur. P. striata, Lindl., would seem to be a 

 form with the spur only halt' the length of the lip. 



5. SPIRANTHES, Richard. Ladies' Tresses. 



Perianth ringent, oblique on the ovary ; the lateral sepals somewhat decurrent, 



the upper and the petals coherent ; lip oblong, 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, oblique, terminating in a stout terete stipe bearing the ovate stigma on the 



face, and the beak above usually acuminate and at length bifid by the separation 



of the oblong 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 to the gland. — Flowers small, white or greenish, 1 - 3-ranked in a spirally 



twisted spike. Stems leafy, at least below, from fascicled-tuberous roots ; leaves 



rather thin, mostly narrow and elongated, not petioled. 



A genus of 50 or more species, widely distributed through both hemispheres. Our 10 or 12 

 species are exclusively American and chiefly confined to the eastern side of the continent. 



1. S. Romanzoffiana, Cham. Glabrous, rather stout, 4 to 18 inches high, 

 leafy, bracteate above : leaves oblong-lanceolate to linear : spike dense, 3-ranked, 

 conspicuously bracteate, 1 to 4 inches long: perianth white, about 4 hues long, 

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

 below the narrower rounded wavy-crenulate summit ; callosities smooth, often 

 obscure : the oblong-linear gland and very slender bifid beak three fourths of a line 

 long : capsule oblong, 3 to 6 lines long. — Linnaea, iii. 32 ; Eeichenb. f. Fl. Germ, 

 xiii. 152, t. 477 (Orch. Eur. t. 125). aS*. gemmijoara, Lindl.; Eeichenb. f. 1. c. 

 t. 477, fig. 1 - 3. 



In the high Sierra Nevada and northward, ranging across the continent; also "near the 

 Presidio," Bolandcr. The callosities in western specimens are usuall}' obscure. 



2. S. porrifolia, Lindl. Very similar in habit, a foot high or more, but with a 

 narrower spike and smaller flowers, the perianth 3 lines long : callosities at the base 

 of the lip very prominent and nipple-like, pointing downward. — Orch. 467. 



In the Coast Ranges {Douglas), and wet places, Sacramento Valley, Hartuxg. The closely 

 allied S. ccrnua of tiie Eastern States has the flower and especially the lip more recurved, and the 

 prominent nipple-like callosities often hairy. 



6. GOODYERA, R. Brown. Rattlesnake-Plantain. 

 Distinguished from Sjnranthes by the saccate or ventricose lip, sessile, entire, 

 and without callosities. — Scapes few-bracteate ; leaves thickish, rosulate at the 



