ORCHIDACE.E. (ORCHIS FAMILY.) 511 



root, a slender naked rootstoek produces each year a thick, globular, solid bulb 

 or corm, often 1' in diameter (tilled with exceedingly glutinous matter), which 

 sends up late in summer a large, oval, many-nerved and plaited, petioled, green 

 leaf, lasting through the winter, and early in the succeeding summer its scape, 

 a foot or more high, is terminated by a loose raceme of dingy rather large flowers. 

 (Genus too near the last. The name composed of a privative and TrXrjKTpov, 

 a spur, from the total want of the latter.) 



1. A. hyemale, Nutt. — Woods, in rich mould: rather rare or local. — 

 Each corm lasts 2 or 3 years before it shrivels, so that 3 or 4 are found horizon- 

 tally connected. Perianth greenish-brown, or the lip whitish, and somewhat 

 speckled with purple, 5" - 6" long. 



16. CYPMPEDIUM, L. Lady's Slipper. Moccason-flower. 



Sepals spreading; all three distinct, or in most cases two of them united into 

 one under the lip. Petals spreading, resembling the sepals but usually nar- 

 rower. Lip a large inflated sac. Column declined; on each side a fertile sta- 

 men, with its short filament bearing a 2-celled anther; the pollen loose and 

 pulpy or powdery-granular ; on the upper side a dilated-triangular, petal-like 

 but thickish body, which answers to the fertile stamen of other Orchids, and 

 covers the summit of the style ; stigma terminal, broad, obscurely 3-lobed, 

 moist and roughish (not smooth and viscid as in the rest of the order). Pollen 

 in most of our species, especially in No. 6, exposed by the conversion of the face 

 of the anther into a viscid, varnish-like film, which adheres to whatever touches 

 it, carrying away some of the pollen. — Root of many tufted fibres. Leaves 

 large, many-nerved and plaited, sheathing at the base. Flowers solitary or 

 few, large and showy. (Name composed of Kinrpis, Venus, and 7rd8ioj>, a sock 

 or buskin, i. e. Venus' s Slipper.) 



§ 1. The three sepals separate. (Stem leafi/, single-flowered.) 



1. C. arietinum, R. Brown. (Ram's-head L.) Upper sepal ovate- 

 lanceolate, pointed ; the 2 lower and the petals linear and nearly alike (green- 

 ish-brown), rather longer than the red and whitish veiny lip, which is prolonged 

 at the apex into a short conical deflcxed point ; leaves 3 or 4, elliptical-lanceo- 

 late, nearly smooth. (Cryosanthes, Raf. Arietinum, Beck.) — Cold swamps 

 and damp woods, Maine to New York, Wisconsin, and northward : rare. June. 

 — The smallest species : stem slender, 6'- 10' high : lip only 6-' long. 



§ 2. Two of the sepals united into one piece under the lip. 



* Stein leafy to the top, 1 - 3-flowered : lip slipper-shaped or roundish, much inflated, 



horizontal, and ivith a rounded open orifice. 



+- Sepals and linear wavy-twisted petals brownish, pointed, longer than the lip. 



2. C. candidum, Muhl. (Small White Lady's Slipper.) Sepals 

 ovate-lanceolate ; lip white, flattish laterally, convex above ; sterile stamen lanceo- 

 late; leaves lance-oblong, acute. — Bogs, from central and New York (rare) 

 to Kentucky and Wisconsin. May, June. — Little larger than the foregoing 

 species, slightly pubescent, 1-flowered : petals and sepals greenish, nut much 

 exceeding the lip', which is less than 1' long. 



