ORCHIDACEAE. 295 



neath, 10-17 cm - m diameter; raceme loosely many-flowered; pedicels about I cm. 

 long, the fruiting ones erect ; flowers greenish white ; lateral sepals falcate-ovate, 

 obtuse, 8-10 mm. long; lip about 12 mm. long ; spur much longer than the ovary, 

 often 3.5 cm. long ; anther-sacs prominent, converging above ; glands small, orbic- 

 ular, nearly 5 mm. apart, their faces turned toward the axis. In rich woods, Newf. 

 to Br. Col., N. Car. and Minn. July-Aug. \IJabenaria orbic^tlata (Pursh) Torr.] 

 2. Lysias Hookeriana (A. Gray) Rydb. HOOKER'S ORCHIS. (I. F. f. 1097.) 

 Scape 2-4 dm. high, not bracted. Leaves fleshy, shining, spreading or ascending, 

 oval, orbicular or obovate, 0.7-1.4 dm. long; raceme rather loosely many-flowered, 

 1-2 dm. long ; bracts acute, about as long as the yellowish green flowers ; lateral 

 sepals greenish, lanceolate, acute, spreading, about 8 mm. long ; petals narrowly 

 linear or awl-shaped; lip linear-lanceolate, acute, 8-iomm. long; anther-sacs widely 

 diverging below ; glands small, their faces turned inward ; spur slender, acute, 1 6 

 mm. long or more, as long as the ovary or considerably longer. In woods, N. S. 

 to Minn., N. J., Penn. and Iowa. June-Sept. [Habenaria Hookeriana, A. Gray.] 



9. LYSIELLA Rydb. 



Small plant with a short rootstock and thick root-fibers. Stem scapose, naked, 

 with a single obovate leaf at the base ; flowers greenish yellow. Upper sepal 

 round-ovate, erect, surrounding the broad column ; lateral sepals reflexed, 

 spreading ; petals lanceolate smaller ; lip entire linear-lanceolate, deflexed ; 

 spur slightly curved, shorter than the arcuate ovary. Beak of stigma not appen- 

 daged. Anther-sacs widely diverging, wholly adnate, arcuate; glands small, their 

 faces turned inward. Pod obovoid. A monotypic genus, mostly of North America. 

 [Name diminutive of Lysias.] 



i. Lysiella obtusata (Pursh) Rydb. SMALL NORTHERN BOG ORCHIS. (I. 

 F. f. 1098.) Scape slender, naked, 8-20 cm. high, 4-angled. Leaf solitary, basal, 

 obovate, 4-10 cm. long, 10-24 mm. wide ; spike 2-5 cm. long, loose ; flowers 

 greenish yellow, about 6 mm. long; upper sepal erect, round-ovate, green with 

 whitish margins ; lateral sepals spreading-reflexed, oblong, obtuse or acute ; petals 

 shorter, dilated or obtusely 2-lobed at the base, connate with the base of the column; 

 lip entire, linear- lanceolate, obtuse, deflexed, about 6 mm. long; spur about as long 

 as the lip, slender, curved, blunt. In bogs, N. B. to Br. Col., south to Me., N. Y. 

 and Colo. Also in northern Norway. July-Sept. \Habenaria obtusata (Pursh) 

 Richards.] 



9. BLEPHARIGLOTTIS Raf. 



Plants with tall and leafy stems and fleshy or tuberous roots. Flowers 

 several or numerous in an open spike fprith foliaceous bracts ; corolla white, 

 yellow or purplish ; sepals broad and spreading or reflexed ; lip variously 

 fringed or 3 -parted and cut-toothed ; spur longer than the lip. Anther-sacs 

 widely separated and usually diverging, their narrow beak-like bases supported by 

 the arms of the stigma, strongly projecting forward and upward ; gland naked ; 

 pollinia granular. A North American genus of perhaps a dozen species. [Name 

 Greek, meaning fringed throat.] 



Lip not 3-parted, pectinately fringed. 



Spur half as long as the ovary; flowers yellow. I. B. cristata. 



Spur longer than the ovary. 



Flowers bright yellow. 2. B. ciliaris. 



Flowers white. 3. B. blephariglottis. 



Lip 3-parted. 



Segments of the lip deeply fringed. 



Segments narrow; fringe of a few threads. 4. B. lacera. 



Segments broadly fan-shaped; fringe copious. 



Segments fringed to the middle or deeper; flowers white. 



5. B. leucophaea. 

 Segments not fringed beyond the middle ; flowers lilac, rarely white. 



Raceme 4-5 cm. thick ; lip 1-2 cm. broad. 6. B. grandiflora. 



Raceme 1-3 cm. thick; lip 8-12 mm. broad. 7. B. psycodes. 



Segments of the lip cut-toothed ; flowers violet-purple. 8. B. peramoena. 



I. Blephariglottis cristata (Michx.) Raf. CRESTED YELLOW ORCHIS. (L 

 F. f. 1106.) Stem slender, angled, 2-6 dm. high. Leaves narrowly lanceolate, 

 5-20 cm. long, the upper much smaller, similar to the bracts; bracts as long as the 



