94 Juncaceae 
AA. Inflorescence crowded into 1—several spike-like or head-like clusters. 
F. Flower-clusters sessile; inflorescence spike-like. C. E. 
J. spicatum Kuntze (Spiked Wood-rush) 
FF. Flower-clusters mostly stalked; inflorescence umbel-like. W.C. E. (J. como- 
sum of How. FI.; J. intermedium.) 
J. campestre Kuntze (Field Wood-rush ) 
Key DIRECT TO THE GENERA OF 
MELANTHACEAE, LILIACEAE, AND CONVALLARIACEAE 
A. Leaves not grass-like, either wider or mere scales. 
B. Leaves mere scales; plants very much branched, ultimate branchlets thread-like. 
ASPARAGUS (p. 107) 
BB. Leaves not scales; branching not profuse; branches not thread-like. 
C. Stems scapose or none, or leaves only from near base. 
D. Leaves only 2 or 3. 
E. Perianth 25—-75 mm. long; perianth-segments about equal in width; 
stamens 6. ERYTHRONIUM (p. 103) 
EE. Perianth 6—9 mm. long; inner perianth-segments narrower than the 
outer; stamens 3. Sco.tiopus (p. 109) 
DD. Leaves more than 3. 
F. Plant with bulb, glabrous; leaves 12 or more times as long as wide; fruit 
a capsule. CAMASSIA (p. 105) 
FF. Plant with rhizome, hairy at least on the inflorescence; leaves 3—5 
times as long as wide; fruit a berry. CLINTONIA (p. 107) 
CC. Stems leafy, not merely so at base. 
G. Petals very unlike the sepals in form or size or color. 
H. Leaves 3 in a'whorl at the top of the stem, ovate or wider. 
TRILLIUM (p. 109) 
HH. Leaves more than 3, not in a whorl, lanceolate or narrower. 
ae CALOCHORTUS (p. 104) 
GG, Petals and sepals alike or very nearly so. 
I. ° Flowers not white, or if so 42 mm. long or longer. 
FRITILLARIA or LILIUM (p. 98, JJ) 
II. Flowers greenish-white, 2—-23 mm. long. 
Jit Leaves: 1-3: UNIFOLIUM (p. 108) 
JJ. Leaves more than 3. 
“K. Flowers in a terminal raceme or panicle; stem not branched. 
L. Style 1; fruit a berry; stem 2—9 dm. high. VAGNERA (p. 107) 
LL. Styles 3; fruit a capsule; stem 6—30 dm. high. 
VERATRUM (p. 97) 
KK. Flowers either in a terminal umbel or else axillary; stem usually 
branched. STREPTOPUS or DISPORUM (p. 106, EE) 
AA. Leaves grass-like, narrow. 
M. Plant with onion-like odor and taste. ALLIUM (p. 99) 
MM. Plant without either onion-like odor or taste. 
N. Stem none, or scapose, or leafy only near the base. 
O. Plant with rhizome. 
P. Plant stemless; flowers in a sessile umbel; bracts of the inflorescence 
leaf-like, about twice as long as the flower and its stalk. 
| LEUCOCRINUM (p. 99) 
PP. Plant with stem 15—90 cm. high; flowers in a terminal raceme or 
panicle; bracts of the inflorescence not leaf-like, shorter than the flower 
52 ban 
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