178 ORCHIDACEAE 



• 1" 9 • J^^Sii.ta.e A. Nels. Stem 3-10 cm. high, more or less villous-viscid 

 in the mflorescence ; leaves oval to nearly orbicular, 5-10 cm. long glabrous or 

 nearly so ; sepals and petals purplish, ovate-lanceolate, acuminate, about 2 cm 

 long; hp 10-12 nim. long, greenish yellow, with deep purple margins; sterile 

 stamen oblong, obtuse. Open woods and hiUsides: Wyo.— Utah— Colo Sub- 

 mont. Ai>-Je. 



3. ORCHIS (Tourn.) L. Orchis. 



Perennial herbs, with digitately cleft tubers, or in our species with rootstocks 

 and fibrous roots. Flowers in terminal spikes. Sepals distinct, equal, spread- 

 ing, 3-nerved. Petals ascending, in ours narrower. Lip connate with the col- 

 umn, produced below into a spur, usually 3-clef t. Column short. Fertile 

 anther sohtary, 2-ceIled; sacs contiguous and slightly diverging; pollinia granu- 

 lose, one large mass in each sac, produced into a slender caudicle, attached to 

 a small gland, which is enclosed in a pouch. 



1. O. rotundifolia Pursh. Perennial, with a rather slender scaly rootetock: 

 stem 1 2.0 dm. high, scape-hke; leaf solitary, near the base, orbicular or oval 

 3-7 cm. long; spike 2-6-flowered; flowers 12-15 mm. long; sepals elliptic, 6-7 mm 

 long rosMJolored, the lateral ones spreading; upper petals similar, but sHghtlv 

 shorter; lip wlute, purple-spotted, 3-lobed, with a large middle lobe, notched at 

 the apex; Sjpur slender, curved, shorter than the lip. Cold damp woods: Greenl. 

 —N.Y.—Mmn.— B.C.— Yukon. Subalp.— Boreal. Jc^Jl. 



4. COELOGLOSSUM Hartman. 



Caulescent herbs with 2-cIeft biennial tubers. Leaves alternate, sessile. 

 b lowers perfect, m_ elongated terminal spikes, greenish. Sepals distinct con- 

 I^^^^^'i^^ forming a hood. Lateral petals narrow, erect; lip obtuse,' 2- or 

 3-toothed at the apex, produced below into a sack-like spur. Column short 

 Fertile anther sohtary; anther-sacs 2. Pollinia sohtary, with long caudicles" 

 uland small, surrounded by a thin membrane. 



1. C. bracteatum (WiUd.) Pari. Stem 1.5-6 dm. high; leaves 3-5, obovate 

 oblanceolate, oval, or the upper narrowly lanceolate, 5-15 cm. long; bracts linear- 

 lanceolate, longer than the flowers; flowers green or greenish; sepals lanceolate 

 about b mm. long; hp 6-8 mm. long, oblong or somewhat cuneate, 3-toothed at 

 the apex, the middle tooth smallest; spur less than half as long as the lip Haben- 

 an^bracteata (WiUd.) R. Br. Wet meadows and woods: N.B — N C — Colo 

 — B.C. Mont. — Boreal. My-S. 



6. LYSIAS SaUsb. 



Subacauloscent herbs with fleshy rootstocks or tubers. Leaves almost 

 basal, 2 m number, broad and many-nerved. Flowers in terminal spikes white 

 or greenish. Sepals distmct, large, spreading; upper sepal in ours broadly cor- 

 date, the lateral ones obhquely ovate. Lateral petals small and narrow Lin 

 entire, narrow, produced below into a slender spur. Fertile anther soiitarv" 

 sacks divergmg,^ with beak-hke bases projecting forward. PolUnia with their 



'to orbicular naked glands. Stigma without append- 



affixed 



ages. 



Leaves orbicular or rounded oval; spur slightly clavate at the apex. i r, orhin.intn 



Leaves oval or ovate; spur stroagly clavate and curved at the apex. 2." L. MeSu 



1. L. orbiculata (Pursh.) Rydb. Scape stout. 3-^ dm. hish. he.^rlr.^ «o^....t 



8-12 



many-flowered; lateral petals obliquely lanceol'ate; Up linear, 12-15 mm lonl 



iN.C. — xMmn. — Wash. — (? B.C.). Monl. — Boreal. My-Au. 



2. L. Menziesu (Lindl.) Rydb. Scape 3-4 dm. high" with 1-2 lanceolate 

 bracts; basal leaves 10-12 cm. long, 6-8 cm. wide; raceme lax; pedicels 7-10 mm 

 long; lateral petals narrowly lanceolate; lip narrowly linear, 8-10 mm W- 

 spur less than 2 cm. long Platanthera Menziesii Lindl. Wet woods: Mont - 

 ida. — li.O. Mont, Jl-Au. 



