OKCHIDACE^E. (ORCHIS FAMILY.) 341 



G. Goodyera. Like the last, but lip saccate, entire, without callosities and free from 

 the column. Leaves all radical, white-reticulated. 



7. lastera. Perianth spreading. Lip flat, 2-lobed. Stem low, with a pair of broad ses- 



sile leaves in the middle. 



8. Epipactis. Perianth spreading and ovary rec-.urved. Lip somewhat jointed in the 



middle, concave and auriculate at base, dilated above. Stem leafy, stout. 



Tribe IV. Perfect anthers 2, lateral, the sterile one forming a dilated fleshy appendage 

 above the terminal stigma ; pollen pulpy-granular. 



9. Cypripedium. Perianth spreading. Lip an inflated sac. Stems leafy, bearing one 



or a few showy flowers. 



1. CALYPSO, Salisb. 



Petals and sepals ascending, similar and nearly equal ; lip with two shcrt 

 spurs below the apex. Column petaloid, oval and concave. Lower pair of 

 pollen-masses smaller, compressed. A low herb, in bogs, with showy flowers, 

 a scaly-sheathed stem, and a single radical broad thin leaf. 



1. C. borealis, Salisb. Stem 3 to 6 inches high, with 2 or 3 membrana- 

 ceous brownish green sheaths, and a linear acuminate bract at the summit : 

 the radical leaf broadly ovate or slightly cordate : flower drooping : sepals 

 and petals light rose-color ; lip usually longer, brownish-pink mottled with pur- 

 ple, the edge margined at the apex and bifid or entire, about equalling the 

 tooth-like spurs and with a tuft of yellow hairs at base. From Colorado to 

 Oregon and British America ; thence eastward to the North Atlantic States. 



2. CORALLORHIZA, Haller. CORAL-ROOT. 



Petals and sepals ascending, similar and nearly equal, but the lateral sepals 

 oblique at base and either decurrent in a short spur adnate to the side of the 

 ovary, or forming a projecting gibbosity above it. Column narrowly mar- 

 gined, broader at base, somewhat incurved. Without green herbage, the 

 solitary scape with 2 to 4 membranaceous sheaths, and bearing a simple raceme 

 of brownish, yellowish, or purple flowers : pedicels reflexed in fruit. 



* Spur present : lip 3-lobed : flowers small, yellowish-green or whitish, often tinged 

 or mottled with purple. 



1. C. multiflora, Nutt. Scape a foot or two high, many-flowered : 

 sepals and petals 3-nerved ; spur manifest, but wholly adnate to the ovary ; lip 

 nearl}/ sessile, 3-Iobed by a deep deft on each side, the middle one rounded or 

 emarginate, with undulate or denticulate margin : capsule 6 to 9 lines long, 

 narrowed to a short rather stout pedicel. Across the continent in north tem- 

 perate latitudes, and in the Rocky Mountains southward to the Wahsatch and 

 Colorado. 



2. C. innata, R. Br. Scape slender, 4 to 10 inches high, 3 to 15-flowered : 

 sepals and petals l-nerved ; spur very short ; lip somewhat 3-lobed by a lateral 

 deft, abruptly attenuate to the base ; column stout, constricted in the middle : cap- 

 sule 2 to 4 lines long, abruptly narrowed to a short very slender pedicel. From 

 Colorado to Washington Territory, and thence eastward to Canada and the 

 Atlantic States, and northward to the Arctic regions. 



