OECHIDACEAE. 85 



anth green or greenish. Sepals and petals converging, tlie petals much nar- 

 rower than the sepals. Lip narrow, 2-3-lobed at the apex, the spur much 

 shorter than the lip. 



1. C. bracteatum (Wilkl.) Pari. Stem 2-6 dm. tall: leaf -blades oblong-ovate 

 to oblong-elliptic or oblong-lanceolate, 10-15 cm. long: bracts surpassing the 

 flowers: sepals ovate to ovate-lanceolate, 5-6 mm. long: petals nearly linear or 

 linear-filiform: lip narrow, 6-8 mm. long: capsules 8-10 mm. long. — N. W. 

 Bare, in damp soil. Sandstones and shales, quartzite. — Spr. and sum. 



5. LYSIAS Salisb. Caulescent herbs, the stem scape-like, scaly. Flowers 

 in a spike or a raceme. Perianth white or greenish. Sepals spreading, rela- 

 tively broad, the lateral ones longer and narrower than the median one. Petals 

 much smaller than the sepals, entire or erose. Lip narrow, entire, the spur 

 longer than the lip. Anthers with diverging sacs whose beak-like bases project 

 forward. 



1. L. orbiculata (Pursh) Eydb. Stem 3-9 dm. tall: basal leaves 2, flat on 

 the ground; blades orbicular to oval, 1-3 dm. long: sepals greenish-white, the 

 median one suborbicular or reniform, 5-6 mm. long, the lateral ones ovate, 

 8-10 mm. long: petals reflexed, 7-8 mm. long: lip nearly linear, 12-15 mm. 

 long, obtuse, the spur 2.5-4 cm. long: capsules about 1.5 cm. long. — S. Very 

 rare, in damp woods near Wakefield, not far from the station for Trientalis. — 

 Schists. — Sum. — Eound-leaved orchis. 



6. BLEPHARIGLOTTIS Eaf. Caulescent herbs, the stem leafy. Flowers 

 in a terminal spike. Perianth white, yellow, orange, purple, or violet-purple. 

 Sepals spreading or reflexed. Petals toothed or lacerate, or rarely entire. Lip 

 fringed, or 3-lobed, the lobes toothed or lacinate. Spur often longer than the 

 lip. Anthers with widely separate sacs, their narrow beak-like beases supported 

 on the arms of the stigma, projecting forward and upward. — Sum. — Fejnged- 

 ORCHis. Showy-orchis. 



Petals fringed at the apex : lip not 3-lobed. 1. B. ciliaris. 



Petals entire, crenulate or merely erose : lip 3-lobed. 



Petals entire, linear : lip with narrow lobes. 2. B. lacera. 



Petals crenulate or erose, dilated upward : lip with dilated 

 lobes. 

 Lobes of the lip fimbriate or fringed : petal-blade toothed 

 on the sides. 

 Lip 7-10 mm. long : lateral sepals 5-6 mm. long : petals 



5-7 mm. long. 3. B. psycodes. 



Lip 14-20 mm. long : lateral sepals 9-11 mm. long : 



petals 9-12 mm. long. 4. B. grandiflora. 



Lobes of the lip incised or erose : petal-blade erose at 



the tip or entire. 5. B. peramoena. 



1. B. cilaris (L.) Eydb. Stem 5-8 dm. tall: leaf -blades oblong to lanceolate, 

 8-20 cm. long: perianth yellow or yellow-orange: lateral sepals orbicular-ovate 

 to orbicular-obovate, 6-8 mm. long: petals linear, oblong-linear or spatulate, 

 5-7 mm. long, sharply toothed at the apex: lip ovate in outline, copiously 

 fringed; spur 15-25 mm. long. — S. Occasional, in swamps. — Schists. 



2. B. lacera (Michx.) Eydb. Stem 3-9 dm. tall: leaf -blades oblong to lanceo- 

 late, 8-20 cm. long: perianth greenish-yellow: lateral sepals ovate to orbicular- 

 ovate, 5-6 mm. long: petals linear, 5.5-6 mm. long, entire: lip 12-15 mm. long, 

 each narrow lobe terminating in a fringe of several processes; spur 14-16 mm. 

 long. — S. Not common, in swamps and low grounds. — Schists. 



3. B. psycodes (L.) Eydb. Stem 3-10 dm. tall: leaf -blades oval, elliptic, or 

 oblong-lanceolate, 5-25 cm. long: perianth lilac: lateral sepals ovate, 5-7 mm. 

 long: petals with broad claws: lip with a spur 13-16 mm. long. — S. Eare, in 

 wet meadows. — Schists. 



