124 ORCHID ACE AE (ORCHID FAMILY) 



brownish-pink mottled with purple, the edge margined at the apex and bifid 

 or entire, about equaling the tooth-like spurs and with a tuft of yellow hairs 

 at base. C. borealis. From Colorado to Oregon and British America; thence 

 eastward to the North Atlantic States. 



3. LIMNORCHIS Rydb. OBCHIS 



Leafy plants with thick fleshy roots and small greenish or white spicate 

 flowers. Leaves persisting until the maturity of the fruit. Sepals and petals 

 free and spreading; lip entire. Beak of the stigma without appendages. 

 Anther sacs nearly parallel, wholly adnate; glands naked; pollinia granular. 

 Habenaria in part. 



Connective of the anther narrow; spur not longer than the lip. 

 Flowers greenish or purplish. 



Spur shorter than the lip 1. L. stricta. 



Spur equaling the lip . . . . . . . . . 2. L. viridiflora. 



Flowers white; spur clavate and shorter than the lip ... 3. L. borealis. 



Connective of the anther broad; spur exceeding the lip . . . .4. L. sparsiflora. 



1. Limnorchis stricta (Lindl.) Rydb. Mem. N. Y. Bot. Gard. 1: 105. 1900. 

 Stem strict, 2-7 dm. high, from fusiform tuberous roots: leaves lanceolate; the 

 lower obtuse: spike often long (1-3 dm.); bracts linear-lanceolate, only the 

 lower longer than the flowers: sepals green: petals purplish; lip linear or 

 lanceolate, obtuse ; spur thickened at the apex and somewhat shorter than the 

 lip. (L. purpurascens Rydb. Bull. Torr. Bot. Club 28: 269. 1901.) From 

 Colorado to Alaska. 



2. Limnorchis viridiflora (Cham.) Rydb. Bull. Torr. Bot. Club 28: 616. 

 1901. Stems rather stout, from elongated thick tuberous roots: leaves ob- 

 lanceolate and obtuse below, lanceolate and acute above : spike rather short 

 and dense (5-10 cm.); bracts about equaling the green flowers: upper sepal 

 ovate, erect, shorter than the lanceolate lateral ones: petals erect, lanceolate, 

 acute, shorter than the upper sepal; lip lanceolate, obtuse, 4-5 mm. long; spur 

 clavate, curved, about equaling the lip. Habenaria hyperborea. Bogs; Colo- 

 rado and far northward. 



3. Limnorchis borealis (Cham.) Rydb. 1. c. Slender, 3-6 dm. high, from 

 thickened tuberous roots: lower leaves oblanceolate and obtuse; the upper 

 lanceolate and acute: spike variable, dense, or few-flowered and lax; the bracts 

 mostly longer than the flowers: flowers usually white, sometimes ochroleucous 

 or greenish-tinged: upper sepal ovate, obtuse, 4-5 mm. long; the lateral oblong- 

 lanceolate, spreading: petals lanceolate, exceeded by the sepals; lip rhombic- 

 lanceolate, as long as the sepals and usually somewhat longer than the scarcely 

 clavate spur. Habenaria dilatata. Middle Rocky Mountains. 



4. Limnorchis sparsiflora (Wats.) Rydb. 1. c. 631. Slender stemmed, 

 4-6 dm. high: lower leaves oblanceolate, obtuse, 8-16 cm. long; the upper 

 lanceolate and acute: spike 1-2 dm. long, with scattering flowers; bracts 

 about as long as the flowers, linear-lanceolate: flowers greenish, 10-14 mm. 

 long: upper sepal ovate to obovate, obtuse; the lateral lanceolate: petals 

 lanceolate, almost as long as the upper sepal; lip linear, obtuse, 6-8 mm. long, 

 the slender spur a little longer. (L. laxiflora Rydb. 1. c. 630.) From Col- 

 orado to California and Oregon. 



4. COELOGLOSSUM Hartman 



Leafy plants with biennial 2-cleft tubers. Flowers greenish, in a long leafy- 

 bracted spike. Sepals free, but bent together forming a hood. Petals narrow; 

 lip oblong, obtuse, 2-3-toothed at apex ; spur much shorter than the lip, blunt 

 and sac-like. Pollinia with long caudicles. Habenaria in part. 



1. Coeloglossum bracteatum (Willd.) Parl.Fl. Ital. 3: 409. 1858(7). Stem 

 leafy, rather stout, 1-2 dm. high: leaves from oval to lanceolate, the lower 

 often obtuse, 4-10 cm. long: floral bracts foliar and conspicuous: spikes loosely 



