LILIACE^. 123 



22. CLINTONIA, Eafinesque 



1. C. uniflora, Kunth. Nearly stemless: peduncle shorter than the leaves, 1-2-flow- 

 ered: perianth white, | 1 in. long, pubescent. S. N. Mts. and Humboldt Bay, N. 



2. C. Andrewsiana, Torr. Flowers rose-red in a globose umbel on a stout peduncle, 

 often one or more smaller clusters below: fruit rich blue. In the redwoods. 



23. SCOLIOPUS, Torrey. 



1. S. Bigelovii, Torr. Perianth i-| in. long: sepals lanceolate, spreading, striped: 

 petals erect, very slender, dark: style branches 2-3 lines long. Redwoods. 



2. S. Halli, Wats. Smaller: style-branches a line long. Cascade Mts. 



24. TRILLIUM, Linnaeus. 



Flower sessile. Leaves sessile or nearly so, large 1 



Leaves long-petioled: stem 3-4 in. high 2 



Flower peduncled. Leaves sessile or nearly so, rhombic-ovate 3 



Leaves on petioles 1-15 lines long, lanceolate 4 



1. T. sessile, L., var. Califomicum, Wats. Very variable: petals lurid-purple or 

 rose-red to wliite, 1-4 in. long. San Diego to Or. 



2. T. petiolatum, Pursh. Petioles exceeding or equaling the blade. Or. & Wash. 



3. T. ovatum, Pursh. Flowers white becoming rose, fragrant. Santa Cruz, N. 



4. T. rivale, Wats. Slender: leaves 1-2 in. long. N. W, Cal. & S. W. Or. 



25. VERATRUM, Tournefort. 

 Perianth-segments entire or serrulate, oblanceolate, thickened on the sides at base. . 1, 2 

 Perianth-segments fringed rhombic-ovate, the rigtd base divided by a narrow furrow. . 3 



1. V. Californicum, Durand. Stout, 3-7 ft. high: leaves L-12 in. long, sheathing: 

 panicle 1-2 ft. long: perianth-segments whitish with a greener brown-edged base. 



2. V. viride, Ait. Flowers green in slender panicles. Oregon, N. 



3. V. fimbriatviJU, Gr. Leaves lanceolate, 6-18 in. long, narrowed at base. Cal. 



26. ZYGADENITS, Michaux. 



Flowers all perfect; segments longer than the stamens, the outer ones not clawed 1 



Flowers smaller: stamens equaling or exceeding the perianth, 2 or 3 lines long 2, 3 



1. Z. Fremonti, Torr. From a few inches to 3 or 4 ft. high: racomo simple or com- 

 pound: periantli rotate; si'gments i-§ in. long, rather obtuse. San Diego to Humb't. 



2. Z. venenosus, Wats. Loaves r.irely over 2 or 3 lines broad, usually folded: 

 raceme sim[ilo or nearly so. Cent. Cal., N. {Death Camaas.) 



3 Z. paniculatus, Wats. Similar, stouter: raceme compound: lower flowera oft«D 

 ■terilo, short pedictilod; segmeuts 2 lines luug, triangular, acute. Cal., E. 



