116 Orchidaceae 
free. Lip mostly drooping, longer than the sepals, 2-lobed or 2-cleft at summit. Awnther 
without lid, erect, jointed to the column; pollen masses 2, powdery, united to a minute 
gland; column wingless. Stigma with a somewhat rounded beak. Capsule ovoid or 
obovoid. In dense damp woods. (Honor of M. Lister, an English naturalist. ) 
A. Raceme glabrous or nearly so; lip 2-cleft to about the middle, about 4—5 mm. 
long; column 0.5 mm. or less long. W. C. E. 
L. cordata R. Br. 
AA. Raceme densely glandular-pubescent; lip 2-lobed or merely retuse, the divisions 
less than 1/6 the distance to the base; column 2—3 mm. long. 
B. Leaves rounded to truncate at base; petals 3—4 mm. long; lip 5 mm. long; 
capsule ovoid. W.C.  L, caurina Pip. 
BB. ~ Leaves cordate to reniform at base; petals 4-6 mm. long; lip 9 mm. long; 
capsule obovoid. C. E. IL, convallarioides Torr. 
CORALLORHIZA CORAL-ROOT 
Saprophytes or root-parasites; roots coral-like, branched; stems scapose, simple. 
Leaves sheath-like, membranous, white to red, without green. Flowers in a terminal ra- 
ceme, more or less showy. Lateral sepals united at the base with the foot of the column, 
forming a short spur or gibbous protuberance; outer sepals free; spur adnate to the sum- 
mit of the ovary. Petals about as long as the sepals, 1—-3-veined; lip 1——3-ridged; 
column nearly free, slightly incurved, somewhat 2-winged. Anthers terminal, with lid; 
pollen-masses 4, in 2 pairs, oblique, free, soft-waxy. In dense woods. (Gk. koral- 
lion—coral, riza—a root; on account of the knotted, fungus-covered roots.) 
A. Sepals and petals 6—8 mm. long; lip mostly with teeth or lobes at or near the 
base; spur present. 
B. Sepals and petals 3-veined; spur prominent; capsule oblong-cylindric. 
C. Lip crenulate, with 2 lobes at base; spur wholly adnate to the ovary. W. C. 
E. (C. multiflora occidentalis. ) 
C. multiflora Nutt. 
CC. Lip not crenulate, with or without 2 lobes or teeth at the base; spur free 
for its apical half. W. C. 
C. mertensiana Bong. 
BB. Sepals and petals |-veined; spur very short, wholly adnate to the ovary; lip 
2-toothed or 2-lobed above the base; capsule oblong-elliptical. EE. (C. innata.) 
C. corallorhiza Karst. 
AA. Sepals and petals 12—17 mm. long, 3-veined; lip without teeth or lobes; spur 
none; capsules oblong-elliptic. W. E. 
C. striata Lindl. 
LIPARIS 
Low; with solid bulbs. Stem with several sheathing scales at base. Leaves 2, 
wide, shining, basal. Flowers in a terminal raceme. Sepals and petals (other than the 
lip) nearly equal in length; sepals oblong-lanceolate, spreading. Petals filiform or lin- 
ear; lip 3-lobed (ours), entire, nearly flat, often bearing 2 tubercles above the base. 
Column elongated, 2—-3 mm. long, incurved, stout at base, with narrow wings above; 
pollen-masses 4, 2 in each sac of the anther, smooth, waxy, without stalk or gland, the 
pairs slightly united. (Gk. liparos—fat or shining; referring to the smooth leaves.) E. 
(Leptorchis loeselii.) L. loeselii Rich. (Spurless Orchis) 

