220 PROCEEDINGS OF THE AMERICAN ACADEMY 
x Stem simple, strict, leafy, from a scaly bulb: floral bracts leaf-like: anthers 
versatile : styles elongated: capsule not triquetrous : seeds flat, horizontal. 
26. Litrum. Perianth-segments oblanceolate, more or less spreading 
or recurved, often dotted or spotted; nectary a linear groove. 
Anthers distinctly versatile. Style undivided. Bulb-scales lan- 
ceolate. 
27. FritityariA. Perianth-segments broader and concave, often 
mottled; nectary a shallow pit. Anthers more obscurely versa- 
tile. Styles united to the middle or throughout. Bulb-scales 
mostly short, very thick. 
x * Stem simple, low, lax, from an oblong membranous-coated corm, bearing 
a pair of dilated leaves, without floral bracts: anthers basifixed: styles elon- 
gated: capsule triangular or triquetrous: seeds ascending, turgid, brownish. 
28. ErytTHronium. Perianth-segments oblanceolate, strongly revo- 
lute, mostly callous-toothed at base each side of the grooved 
nectary. Styles usually distinct above. Seeds obovoid, angled, 
the testa loose and rugose at top. 
x x * Stem simple, dwarf, from a small tunicated bulb: leaves linear, with- 
out veinlets: perianth persistent, the equal segments 3-nerved, with a naked 
obscure gland at base: anthers very small, basifixed: style slender, undivided, 
persistent : capsule triquetrous: seeds horizontal, flat.— Subtribe LLoypiez. 
29. Luoypra. Perianth small, spreading, white with purplish veins 
and base. Stem slender, leafy, usually 1-flowered ; the bulb 
upon an oblique rhizome, covered by the persistent scarious bases 
of the nearly filiform leaves. Arctic or alpine. 
x * * * Stem usually branched, from a coated corm, sparingly leafy: leaves 
with transverse veinlets : perianth of unequal segments, the outer smaller, some- 
what greenish and sepaloid, the inner dilated and mostly with pitted and bearded 
or crested glands: anthers basifixed: stigmas sessile, distinct, recurved, per- 
sistent: capsule usually deeply triquetrous, mostly septicidal: seeds ascending, 
with light-colored spongy testa, rarely flat and horizontal. —Subtribe Caxo- 
CHORTE. 
30. CaLocnortus. Flowers mostly large and showy, broadly cam- 
panulate. Stem usually lax or flexuous, from a membranous- or 
rarely fibrous-coated corm. 
Trize XI. Uvulariez. Flowers terminal or pseud-axillary, solitary or 
subumbellate, with naked pedicels on leafy branching stems (or in Clintonia on 
a scape-like peduncle) from a short or creeping rootstock: perianth narrowly 
campanulate; segments oblanceolate, with a nectariferous groove at the 
narrow subgibbous base: anthers linear: styles linear, more or less united, 
stigmatic down the inside: fruit a loculicidal or tardily dehiscent capsule, or 
berry-like: seeds pendulous: stems scaly-bracted below: leaves dilated, with 
numerous nerves and transverse veinlets (reticulated in Prosartes). 
