318 



ORCHIDACEAB (OECHIS FAMILY) 



13. MICROSTYLIS (Nutt.) Eaton. Adder's Mouth 



Sepals oblons;, spreading. Petals filiform or linear, spreading. Lip aiiricled 

 or ovate at base, narrowing toward the summit, entire or nearly so. Column 

 very small, terete, with 2 teeth or auricles at the summit and the 

 erect anther between them ; pollen-masses 4, in one row (2 in each 

 anther-cell) , cohering in pairs, waxy, without stalks, filaments, or 

 gland. — Low herbs from solid bulbs producing simple stems which 

 bear a single leaf and a raceme of ntunerous minute greenish 

 flowers. (Name composed of ixiKpbs, small, and arvXis, a column 

 or style.) AcHROAXxniiS Raf. (without description) . 



1, M. monophyllos (L.) Lindl. Scape slender, 10-15 cm. high, 

 with a sheathing, ovate-elliptical leaf above base ; 

 raceme spiked, long and slender, about 7 mm. in 

 diameter; pedicels nearly equal to the ovaries in length; lip 

 roundish at base, terminating in a long point. — In damp shady 

 woods or swamps, occasional from Que. to Man., s. to Pa., Ind., 

 and Minn., rare south w. June, July. (Eurasia.) Fig. 634. 



2. M. unifblia (Michx.) BSP. Plant 7-22 cm. high; leaf 

 near the middle, ovate, clasping ; raceme short, 8-20 mm. in 

 diameter; pedicels much longer than the ovaries; lip truncate, 

 S-lobed at the summit, the middle lobe small. (3/. ophioglos- 

 soides Eaton.) — Occasional in bogs and woods, Nfd. to Man., and 635. M. unifoUa 

 south w. July, Aug. Eig. 635. xsyg. 



634. M. mono 

 phyllos X 314. 



14. LIPARIS Richard. Twayblade 



Sepals oblong-lanceolate. Petals linear or filiform. Lip entire. Column 

 2-3 mm. long, curved, stout at base, with narrow wings above ; anther termi- 

 nal, operculate ; pollen-masses 4 (2 in each anther-cell), slightly united in pairs, 

 without stalks, filaments, or gland. — Low herbs, with solid 

 bulbs, producing two root-leaves and a low scape which bears 

 a few-fiowered raceme. (Name from '\nrap6s, fat or shining, 

 in allusion to the smooth or unctuous leaves.) 



1. L. Iiliif51ia (L.) Richard. Plants 10-17 cm. high ; leaves 

 elliptical or ovate, acute or obtuse, glossy ; scape angled ; 

 flowers 5-15 ; sepals oblong-lanceolate, similar ; petals pendent, 

 madder-purple ; lip wedge-ohovate, translucent, madder-purple ; 

 column with 2 gland-like tubercles on the inner face at base. — Woods, N. H. 

 and Mass. to Minn., Mo., and Ala. June, July. Eig. 636. 



2. L. Loeselii (L.) Richard. Plants 8-22 cm. high ; leaves elliptic-lanceolate 

 or oblong, keeled ; Up ohovate or oblong, 5 m7n. long, yellowish-green ; column 

 about 2 mm. long. — Swamps, damp fields, and moist thickets, rather local, be- 

 coming rare south w. June, July. (Eu.) 



15. CALYPSO Salisb. 



Sepals and petals similar, ascending, spreading, oblong-lanceolate, acute, 

 magenta-crimson, rarely white. Lip larger than the rest of the flower, saccate, 

 with three longitudinal rows of yellow (or white) glass-like hairs in front and 

 with a translucent apron-like appendage (formed by the overlapping of the lip) 

 spotted with madder-purple, the sac (bearing two conspicuous horns at its base) 

 whitish, with irregtilar purple-madder markings. Column winged, having the 

 operculate anther just below the apex ; pollen-masses waxy, 2, each 2-parted, 

 all sessile on a square gland. — Leaf solitary. Scape one-flowered. (Named 

 for the goddess Calypso.) 



1. C. bulbbsa (L.) Oakes. Plant 6-18 cm. high ; leaf oval or ovate, vemy, 

 its margin wavy, the petiole triangular; scape smooth, with membranaceous 

 sheathing bracts ; both leaf and scape produced separately from the summit of 

 a rounded or elongated corm ; pedicel of the flower subtended by a petaloid 



