LILIACEAE. 101 



Trillium chloropetalum (Torr.) Howell. Stems 30-40 cm. high; leaves 

 ovate, often as broad as long, usually acute, commonly blotched with brownish 

 spots; flowers sessile; petals oblanceolate, obtuse, white. 



Roy, Washington, and southward. 



Trillium ovatum Pursh. Stems 15—10 cm. tall, from a stout horizontal 

 rootstock, 2-5 cm. long; leaves broadly ovate, acuminate or acute, 5-15 cm. 

 long, nearly sessile; flowers odorous; peduncles erect, 3-6 cm. long; petals 

 lanceolate, acute, white, in age changing through various shades of pink to 

 dark red, exceeding the green sepals; anthers yellow. 



Very common in moist woods. Various abnormal forms are occasionally 

 found, such as flowers with the parts in twos or fours, double flowers, etc. 



121. SCOLIOPUS. 



Very short stemmed glabrous perennials more or less punctate 

 with purple dots and with short fibrous-rooted rhizomes; leaves 

 2, thin, oval to lanceolate, sessile, many-nerved; flowers long- 

 pedicelled in an umbel ; perianth of 6 spreading segments, the outer 

 lanceolate, several-nerved, the inner narrowly linear, 3-nerved; 

 stamens 3, at the base of the outer segments; style very short; 

 stigmas linear; ovary sessile, attenuate upward, 1-celled; ovules 

 several. 



Scoliopus hallii Wats. Stem short, mostly subterranean; leaves broadly 

 lanceolate, 8-12 cm. long, acute; flowers 1-8, on slender pedicels 5-8 cm. long; 

 perianth segments narrow, the outer broader and longer than the inner. 



Along mountain streams, western Oregon. 



122. KRUHSEA. 



Perennial herbs with slender creeping rootstocks and leafy 

 erect simple or branched stems; flowers solitary in the axils on 

 slender not geniculate pedicels; perianth segments lanceolate, 

 equal, spreading, all alike; anthers cordate, short-acuminate; 

 berry globose, red. 



Kruhsea streptopoides (Ledeb.) Kearney. Stems 10-60 cm. high, simple 

 or branched; leaves ovate-lanceolate, acuminate, sessile, not ciliate; flowers 

 brownish, the lanceolate attenuated perianth segments equal, spreading, 

 about 3 mm. long. 



In mountain woods, Alaska to Washington. Chilliwack Valley, Macoun; 

 Cascade Mountains, 49°, Lyall. Reported from Baker Lake, Muenscher. 



123. STREPTOPUS. 



Herbs with stout or slender rootstocks; leaves thin, sessile or 

 clasping, alternate, many-nerved; flowers solitary or two to- 

 gether, axillary, slender-peduncled, greenish or purplish, small, 

 nodding; peduncles bent or twisted at about the middle; perianth 

 somewhat campanulate, its segments 6, recurved or spreading, 

 the outer flat, the inner keeled; stamens 6, hypogynous; ovary 

 3-celled; ovules numerous, in two rows in each cavity. 



Stems branched; leaves glaucous beneath. 5. amplexifolius 



Stems simple; leaves not glaucous beneath. S. curcipes. 



