284. PROCEE)INGS OF THE AMERICAN ACADEMY 
segments narrowly linear, 2 to 2} lines long, scarcely exceeding the 
stamens: filaments covered nearly to the top with dense tangled 
wool: capsule 5 lines long: seeds 3 line (or with the tails 3 to 4 
lines) long. — Bot. Mag. t. 1505; Baker, Journ, Linn. Soc. 15. 351. 
NV. ossifragum, var. Americanum, Gray, Manual, 536. New Jersey. 
2. N. Carirornicum, Baker, 1.c. Leaves usually 7-nerved, 13 lines 
broad: raceme open, 3 to d inches long: perianth-segments linear- 
lanceolate, 3 or 4 lines long, a third longer than the stamens: hairs 
upon the filaments ascending: seeds more numerous (10 to 15 in each 
cell), a line long (5 lines including the tails). — JV. ossifragum, var. 
occidentale, Gray, Proc. Amer. Acad. 7. 591. Northern California 
(Mendocino and Sierra Counties). 
50. XEROPHYLLUM, Michx. 
1. X. seTIFoLIUM, Michx. Stem 1 to 4 feet high: leaves a line 
broad or less: raceme becoming 6 inches long or more: perianth- 
segments oblong-ovate, 3 lines long, exceeding the stamens: styles 
longer than the ovary: capsule elliptic-oblong, obtuse, 2 lines long: 
seeds 2 in each cell, not at all appendaged. — Helonias asphodeloides, 
Linn.; Curt. Bot. Mag. t. 748; Lodd. Bot. Cab. t. 8394. X. aspho- 
deloides, Nutt.; Gray, Manual, 526. New Jersey to Georgia. 
2. X. Tenax, Nutt. Stem 2 to 5d feet high: leaves about 2 lines 
broad, often 2 or 3 feet long: raceme becoming a foot or two-long, 
with usually longer pedicels (mostly 1 to 2 inches): perianth- 
segments oblong, 4 or 5 lines long, scarcely equalling the stamens: 
styles exceeding the ovary, 2 lines long: capsule broadly ovate, acute, 
loculicidally 3-valved, nearly 3 lines long: seeds 2 to 4 in each cell, 
narrowly oblong, 2 lines long, thinner and narrower at the upper end. 
— Helonias tenax, Pursh, Fl. 1. 248, t. 9. X. setifolium, Lindl. Bot. 
Reg. t. 1613. California (Monterey and Plumas Counties) to British 
Columbia (Lyall). 
3. X. Douciasi. Pedicels shorter (4 to 1} inches long): flowers 
smaller, the segments (23 lines long) exceeding the stamens: styles a 
line long: capsule cordate-ovate, 2 lines long, 6-valved, the abruptly 
acute cells separating and then dehiscing: seeds shorter and broader. 
— X. setifolium, var., Gray, Proc. Amer. Acad. 8. 405. Collected 
by Douglas, probably in Oregon, and distributed with his specimens 
of the last species. Also found by Hall (n. 535) near the Columbia 
River, and by Hayden in the mountains of Montana on the head- 
waters of the Yellowstone. 
