MELANTHACEJE FROM THE GENETIC STANDPOINT. 155 
A. coloradensis, and in their veins A. porrifolia. The perianth-segments are 
smaller than in the former and broader than in the latter. A. vaginata 
resembles A. porrifolia also in its branched inflorescence, but has shorter 
pedicels and broader leaves. 
7. ANTICLEA LONGA (Greene), Heller. 
A. longa, Heller, in Muhlenbergia, vi. (1910) 12. 
Zigadenus longus, Greene, Pittonia, iv. (1901) 240. 
Oregon. 
8. ANTICLEA PORRIFOLIA (Greene), Rydb. 
A. porrifolia, Rydb. in Bull. Torr. Bot. Club, xxx. (1903) 273. 
Zigadenus porrifolius, Greene, in Bull. Torr. Bot. Club, viii. (1881) 125. 
New Mexico. 
Pale and soft, garlic-like, somewhat glaucous leaves; bulb oblong with 
white outer coats; raceme simple or few-branched below; bracts ovate- 
lanceolate, green and glaucous ; flowers small, nodding; perianth adnate, 
persistent, segments greenish, broad, none unguiculate; gland elongated, 
truncate, or obcordate. 
9. "ANTICLEA MOHINORENSIS (Greenm.), comb. nov. 
Zigad hinorensis, Greenm. in Proc. Amer. Acad. xxxix. (1903) 71. 
g 
Chihuahua, Mexico. 
Nearest to A. elegans, from which it differs in its somewhat larger flowers, 
more conspicuous and longer bracts of the inflorescence, and in the nature of 
the glands, which are obeordate or Y-shaped, erose-margined. 
10. ANTICLEA VOLCANICA (Benth.), Baker. 
A, volcanica, Baker, in Journ. Linn. Soc., Bot. xvii. (1879) 482. 
Zigadenus volcanicus, Benth. Pl. Hartweg. (1842) 96. 
Guatemala. 
ll. ANTICLEA VIRESCENS (H. B. K.), Rydb. 
A, virescens, Rydb. in Bull. Torr. Bot. Club, xxx. (1903) 273. 
Helonias virescens, Kunth, Nov. Gen. Voy. Humb. et Bonpl. i. (1815) 267. 
Veratrum virescens, Mart. et Gal. Enum, Pl. Mex. 10; Kunth, Enum, Pl. iv. (1843) 698. 
Melanthium virescens, Willd. Herb, No. 7076 (ex Kunth, 7. c.). 
Anticlea mexicana, Kunth, Enum. Pl. iv. (1843) 193. 
Zigadenus mexicanus, Hemsl. Biol. Centr.-Am., Bot. iii. (1885) 382. 
Zigadenus volcanicus, S. Wats. in Proc. Am. Acad. xviii. (1883) 165. 
Mexico. 
A 
12. ANTICLEA GRACILENTA (Greene), comb, nov. 
Zigadenus gracilentus, Greene, Pittonia, iv. (1901) 241. 
Mexico. 
