280 PROCEEDINGS OF THE AMERICAN ACADEMY 
segments deltoid, acute or acuminate, with a short claw ; gland less 
definitely margined, often reaching nearly to the middle of the blade: 
fruiting pedicels spreading: capsule } to 1 inch long: seeds 38 to 5 
lines long. — King’s Rep. 5. 344. <Amianthium Nuttallii, var. B, 
Gray, Rev. Melanth. 121. Helontas paniculata, Nutt. Journ. Philad. 
Acad. 7. 57. California (east slope of Sierra Nevada) and Idaho -to 
Utah and the Sackatchewan. 
* x» * Gland obscure or almost wanting: perianth small, rotate or reflexed : 
bulb narrow ; coats becoming fibrous. 
7. Z. LEIMANTHOIDES, Gray. Stem leafy, 1 to 4 feet high, from 
a narrow oblong bulb: leaves 2 to 4 lines broad: racemes panicled, 
rather dense and many-flowered: perianth-segments oblong, not 
unguiculate, 2 lines long, adherent to the base of the ovary, white 
becoming greenish or purplish: capsule 4 lines long, the cells slightly 
divergent at top: seeds 4 in each cell, 3 lines long, somewhat mar- 
gined below. — Manual, 525. Amianthium, Gray, Rey. Melanth. 125. 
Amiantanthus, Kunth. New Jersey to Georgia. 
8. Z. ANGUSTIFOLIUS. Resembling the last: leaves 2 or 3 lines 
broad: raceme simple: perianth free from the ovary: capsule more ob- 
long (8 lines long), the cells not at all divergent: seeds about 4 lines 
long. — Helonias, Michx. Amianthium, Gray, l.c. 124; Chapm. Flora, 
490. Amiantanthus, Kunth. N. Carolina to Florida and Alabama. 
Two Mexican species are described, viz.: Z. voLcanicus, Benth. 
(Pl. Hartw. 96), with elongated grass-like leaves, a rather tall slender 
leafy stem, and flowers (3 lines long) on long divaricate pedicels in 
open lax panicled racemes, the perianth adnate to the base of the 
capsule ; and the quite doubtful Helonias virescens, HBK. (Anticlea 
Mexicana, Kunth), described as low, with a very short somewhat 
branched raceme of very small whitish flowers. But for the branch- 
. Ing raceme it might be suspected of belonging to Schenocaulon. The 
Zygadenus Sibiricus, Gray (Anticlea, Kunth), should probably be 
referred to Stenanthium, though the segments are glandular. 
43. SCHQENOCAULON, Gray. 
1. S. GRAcILE, Gray. Scape very slender, 2 or 3 feet high: leaves 
a line or two wide: flow@rs green, at length scattered in a spike 4 to 
6 inches long; segments narrowly oblong, a line long or less: fila- 
ments very slender: capsule nearly sessile, 4 lines long or more ; 
cells about 7-seeded. — Rev. Melanth. 127. Helonias (?) dubia, 
Michx. Southern Georgia to Florida. 
