276 PROCEEDINGS OF THE AMERICAN ACADEMY 
39. MELANTHIUM, Linn. 
» Perianth-segments with a conspicuous double gland at the summit of the 
claw. 
1. M. Vireinicum, Linn. Stem 3 to 5 feet high, leafy, rather 
slender: leaves linear, 4 to 10 lines wide, only the lowest sheathing : 
perianth-segments flat, ovate to oblong or slightly hastate, 2} to 4 
lines long: capsule ovate, half an inch long: seeds 10 im each cell, 
2 or 3 lines long. — M. Virginicum and monotcum, Walt. AL. polyga- 
mum, Desrouss. Leimanthium Virginicum, Willd. Helonias, Sims, 
Bot. Mag. t.985. Veratrum, Ait. f. Zygadenus, Endl. M. biglandu- 
losum, Bertol. Bot. Misc. 10. 34. From Canada to Carolina and 
Texas. 
2. M. LAtTiroLiuM, Desrouss. Leaves more oblanceolate, often 
2 inches broad: perianth-segments undulate, 2 or 3 lines long, the 
very narrow claw nearly equalling the orbicular or ovate blade: 
capsule 6 to 8 lines long; styles more slender: seeds 4 to 8 in each 
cell, 3 or 4 lines long. —Lam. Dict. 4. 25. M. hybridum, Walt.? 
M. racemosum, Michx. Leimanthium hybridum, Schult. f£. Zygadenus 
hybridus, Endl. Connecticut to South Carolina. The identity of 
Walter’s M. hybridum is doubtful. 
* %* Gland wanting: perianth-segments oblanceolate. 
3. M. parvirLoruM. Stem rather slender, 2 to 5 feet high, 
sparingly leafy: leaves oval to oblanceolate (2 to 4 inches wide), on 
long petioles, only the lowest sheathing: perianth-segments oblanceo- 
late or spatulate, 2 or 3 lines long, attenuate at base: stamens very 
short: capsule half an inch long; seeds 4 to 6 in each cell, 4 lines 
long. — Veratrum parviflorum, Michx.; Gray, Manual, 525. Leiman- 
thium monoicum, Gray, Melanth. 116. Zygadenus monecus, Kunth. 
Alleghanies (Virginia to 8. Carolina). 
40. VERATRUM, Tourn. 
* Stem slender, sparingly leafy ; leaves oblanceolate, only the lowest sheathing : 
flowers greenish purple ; segments entire: ovary tomentose, soon glabrate : 
capsule ovate, acute, the cells few-seeded. 
1. V. Woop, Robbins. Stem slender, 2 to 5 feet high, sparingly 
leafy : leaves oblanceolate, 1 or 2 inches broad or more, on long petioles : 
panicle very narrow: pedicels 2 lines long or less, somewhat longer in 
fruit: perianth-segments nearly glabrous, oblanceolate, 3 or 4 lines long: 
stamens a little shorter, reddish: capsule a half-inch long. — Wood, 
Class-Book, 2 ed. 557; Gray, Manual, 526. Indiana to Missouri. 
