120 LILIACEJE. (LILY FAMILY.) 



18. TRILLIUM, L. THKEE-LEAVED NIGHTSHADE. 



Flowers white to purple; outer segments green, inner petaloid. Anthers adnate 

 iutrorsc. Stigmas linear, sessile. Stem bearing at the top a single whorl of 3 broad 

 nettcd-veined leaves. 



1. T. sessile, L. var. Californicum, Wat. The sessile leaves broadly rhombic- 

 ovate, 3 to G inches long; flower sessile, petals oblanceolate to rhombic -ovate, 1 to 4 

 inches long, purple or rose-color or white. 



2. T. ovatum, Pursh. (Wake Robin. ) Leaves similar to the last, smaller; flower 

 on a pedicel, white, turning rose-color. 



19. VERATRUM, Tourn. FALSE HELEBORE. 



Perianth slightly adherent to tho ovary. Anthers cordate or reniform, peltate after 

 opening. Capsulo membranous, 3-beaked. Stems stout and leafy from thick rootstocks. 



1. V. Californicum, Durand. Stem several feet high; lower leaves broad-elliptical, 

 upper leaves lanceolate; bracts usually exceeding the pedicels; perianth-segments broadly 

 oblanceolate, whitish with greener base, often denticulate, 3 to 8 lines long; capsule an 

 inch long. Moist places. 



2. V. fimbriatum, Gr. Leaves narrowed at base, 6 to 18 inches long, 2 to 6 inches 

 wide, acute or acuminate; perianth-segments rhombic-ovate 3 to 5 lines long: capsule 

 4 lines long. Swamps. 



20. ZYGADENUS, Michx. 



Flowers white or grcfenish, erect in paniculate or simple racemes. Perianth-segments 

 oblong-lanceolate to ovate, mostly glandular and somewhat narrowed at base. 



1. Z. Fremontii, Torr. Stem G inches to 3 ft. high; leaves glaucous, an inch broad, 

 or less; bracts mostly green; perianth 3 to 7 lines long, gland irregular and notched on 

 its upper margin. Flowers perfect. 



2. Z. venenosus, Wat. Stem slender, G inches to 2 ft. high; leaves rarely over 2 

 or 3 lines broad, scabrous; racemo simple, rarely compound, short, with narrow scarious 

 bracts; perianth-segments 2 or 3 lines long. Flowers polygamous. 



21. XEROPHYLLUM,. Michx. 



Flowers white, in a sub-pyramidal many -flowered raceme. Styles reflexed or recoiled, 

 Btigmatic down the inner side. Cauline leaves numerous, setaceous. 



1. X. teuax, Nutt. Stem 2 to 5 ft. high; leaves about 2 lines broad, often 2 or 3 

 ft. long; racemo* becoming a foot or more long; perianth-segments oblong, 4 or 5 lines 

 long, scarcely equaling the stamens. 



LEUCOCRINUM MONTANUM, Nntt., is an acanlesrent plant which produces 4 to 8 fragrant -white 

 flowers on short perlicelj arising from a (subterranean stem; the slender tube of the saivtr-form periauth 

 an inch or two long. Sandy valleys. 



Order ARACE.-E is represented by SYMI T.OCARPUS KAMTSCHATICUS Bong. (Skunk Cabbage) a 

 marbh plant \\ith large erect leaves, the liesliy spadix becoming au oblong-ovoid fruit two or three 

 inches in length. 



