Salicaceae 117 
CALYPSO (Cytherea) 
Low, with solid bulbs; roots coral-like; stem scape-like, sheathed by 2—3 loose 
scales. Leaf 1, basal, round-ovate, petioled. Flower 1, large, showy, terminal. Peri- 
anth-segments (other than the lip) similar, nearly equal; lip large, saccate or swollen, 
2-parted below. Column dilated, petal-like, oval, bearing the lid-like anthers just below 
the summit; pollen-masses 2, waxy, each 2-parted, the lower the smaller, sessile on a 
thick gland. W.E. ((Honor of the Greek goddess Calypso, who once held Ulysses 
captive.) (C. ocidentalis; C. borealis.) 
C. bulbosa Oakes (Calypso) 
DICOTYLEDONS 
SALICACEAE Willow Family 
Trees or shrubs; wood light; twigs brittle; bark bitter. Leaves simple, rarely 
lobed, alternate; stipules mostly present, often minute and caducous. Flowers of both 
sexes in aments, appearing with or before the leaves, dioicous, naked, | in the axil of 
each scale, subtended by a cup-like disk or by 1—2 tooth-like or gland-like projections. 
Stamens long, I—many. Pistil 1; ovary sessile or short-stalked, 1-celled; placentae 
2—A, style short and slender or none; stigmas 2, simple or 2—4-cleft. Fruit a cap- 
sule, 2—4-valved. Seeds many, small or minute, with a tuft of hairs at one end; hairs 
long, silky, mostly white. 
A. Ament-scales entire; stamens |—10; flowers with |—2 gland-like projections at 
base; buds with only | bud-scale. SALIXS (peal Z) 
AA. Ament-scales lacerate or sharply serrate at tip; stamens 4—60; flowers with a 
cup-like disk at base; buds with more than | bud-scale. PoPpuLus (p. 122) 
SALIX WILLOW 
Trees or shrubs; bud-scale 1]. Leaves mostly narrow, short-petioled; stipules none 
or present, persistent or early deciduous. Ament-scales entire. Flowers with |]—2 
gland-like projections at base. Staminate aments dense, erect to drooping: stamens 1|—10 
(mostly 2). Pistillate aments usually erect or spreading: ovary sessile or short-stalked; 
style short or filiform; stigmas 2, entire or 2-cleft. Capsule mostly 2-valved. (Celtic 
sal—near, lis—water; referring to the usual habitat.) 
A. Ament-scales pale-yellow, deciduous. 
B. Trees, with furrowed bark; leaves closely serrulate; stamens 2—9; style 
0.3—0.5 mm. long. 
C. Leaves without glands where petiole joins blade. ©AMYGDALINAE (p. 118) 
CC. Leaves with glands where petiole joins blade. PENTANDRAE (p. 118) 
BB. Shrubs or trees, with unfurrowed bark; leaves remotely serrulate or entire; 
stamens 2; style none. LONGIFOLIAE (p. 119) 
AA. Ament-scales not pale-yellow, mostly brown to black, at least the tip darker, 
persistent. 
D. Aments sessile, or their peduncles naked or merely with bracts. 
E. Leaves glabrous beneath; stipules present; capsule glabrous. 
CORDATAE (p. 119) 
EE. Leaves either hairy beneath or else stipules none; capsule hairy. 
F. Leaves densely silvery-hairy beneath; style elongated; capsule silvery-hairy. 
ARGENTAE (p. 120) 
