278 PROCEEDINGS OF THE AMERICAN ACADEMY 
anth-segments spreading, linear-lanceolate, 2 or 3 lines long: capsule 
strongly reflexed, narrowly oblong-ovate, 3} lines long including the 
turbinate base, with spreading beaks: seeds angled, not margined, 2 
to 2} lines long. — Am. Journ. Sci. 42. 46, and Manual, 525. Helonias 
graminea, Sims, Bot. Mag. t. 1599. Veratrum angustifolium, Pursh ; 
Gray, Rev. Melanth. 120. Xerophyllum gramineum, Nutt. Gen. 1. 
235. Alleghanies, from Virginia to §. Carolina. 
2. S. RoBusTUM. Resembling the last: stem stout, leafy, 3 to 5 
feet high, erect: leaves 4 to 10 lines broad: panicle or raceme often 
2 feet long, frequently compound with numerous slender branches : 
perianth-segments 3 or 4 lines long, white or green: capsule erect, 
ovate, 4 lines long, with recurved beaks: seeds (immature) somewhat 
longer. — Pennsylvania to Ohio, Tennessee and South Carolina. It 
has been ordinarily included in the last. 
3. S. OCCIDENTALE, Gray. Stem slender, a foot or two high, 
sparingly leafy: leaves linear to oblanceolate (8 to 12 lines wide): 
raceme simple or branched at base: flowers all perfect, campanulate, 
greenish-purple, 4 to 7 lines long, about equalling the pedicels; seg- 
ments linear-lanceolate, with recurved tips: capsules at length erect, 
6 to 8 lines long, attenuate into the elongated slender styles: seeds 
linear, flat and winged, 3 or 4 lines long. — Proc. Amer. Acad. 8. 
405. Oregon to British Columbia. A Mexican species, 8. FRIGI- 
pum, Kunth ( Veratrum, Cham. & Schlecht.), tall, with large purple 
flowers and conspicuous bracts, seems rightly referred to this genus. 
42. ZYGADENUS, Michx. 
x Glands 2, orbicular, above the broad claw: root rhizomatous: flowers 
perfect. 
1. Z. GLABERRIMUS, Michx. Stem 2 to 4 feet high, leafy: leaves 
2 to 6 lines broad: panicle broad, with ovate greenish bracts: peri- 
anth adnate to the base of the ovary: segments 6 lines long, oblong- 
lanceolate; glands conspicuous: seeds linear, scarcely margined, 2} 
lines long. — Fl. 1. 214, t. 22. Helonias bracteata, Sims, Bot. Mag. 
t. 1703; Lodd. Bot. Cab. t. 1850. Helonias glaberrima, Link. Vir- 
ginia to Florida and Alabama. 
* %* Gland covering more or less of the base of the perianth-segments: bulb 
ovate; coats membranous. 
+ Flowers rather large, mostly perfect. 
2. Z. ELEGANS, Pursh. Stem } to 3 feet high: leaves glaucous, 
2 to 6 lines broad: raceme simple or sparingly branched below, often 
