= ———S> Sr SS. -_ vy 
"TRILLIUM CONVALLARIACE 661 
upper half spreading or deflexed: inner segments linear-spatulate, shorter 
than the outer ones, incurved and connivent over the stigmas: filaments 
1-2 lines long, about half as long as the ovary. On moist mossy banks 
along mountain streams, western Oregon. 
-7 TRILLIUM L. Sp. 339. 
Glabrous erect herbs with short tuber-like rhizomes, short simple 
stems bearing scarious sheaths at base and 3 flat leaves in a whorl 
around a single large flower at the summit. Perianth of 6 distinct 
persistent segments: the 3 outer narrow, green and sepal-like; the 
38 inner broader and usually white or red. Stamens 6, hypogyn- 
ous; with short filaments and linear, mostly extrorse, anthers. 
Ovary sessile, 3-6-angled or lobed, 3-celled, with several to many 
ovules in each cell. Styles 3, stigmatic along the inner side. 
Fruit a 3-celled or imperfectly 1-celled many-seeded berry-like 
capsule. Seeds ovate, with close thin testa. 
T. petiolatum Pursh Fl. 544. Stem 3-4 inches high, often scarcely 
exserted above the basal sheaths: leaves with ovate-elliptic to reniform 
blade 3-6 inches wide, on stout petioles as long or longer: flower sessile; 
sepals oblong-lanceolate, acute, about an inch long: petals dark purple, 
narrowly oblanceolate, scarcely longer than the sepals, 2-3 lines wide: 
anthers 6-8 lines long, dark purple: styles 5-6 lines long, recurved; ovary 
shortly beaked. On rich hillsides and in copses, eastern Oregon and 
Washington to Idaho. ! 
T. chloropetalum. T7. sessile var. chloropetalum Torr. in part. .T. 
sessile var. Californicum Watsun. Rhizome oblong to obovate, usually 
erect, about an inch long: stem 6-18 inches high: leaves broadly rhombic- 
ovate thickish, usually marked with whitish blotches, 2-6 inhes long, often 
broader than long, obtuse, closely sessile: flower sessile: sepals elongated- 
oblong, obtuse, 10-12 lines long, 3 lines wide: petals white, oblanceolate, 
obtuse, 1-144 inches long 3-4 lines wide, erect: anthers nearly sessile, 
white, about 6 lines long, longer than the stigmas. In wet copses, western 
Oregon to California. 
T. ovatum Pursh FI. 245. Rhizome oblong 1-2 inches long, horizont- 
al: stem. stout, 1-2 feet high: leaves rhombic-ovate, 3-8 inches long, 
usually acuminate, cuneately narrowed at base, sessile: peduncle slender, 
1-3 inches long: sepals lanceolate, acute 1-2 inches long, 3-4 lines wide: 
petals broably lanceolate, acute, 114-214 inches long, 4-12 lines wide, white, 
soon changing to-rose-color and dark red: stamens 3-8 lines long; anthers 
yellow: styles slender, recurved or revolute at the apex. Common in 
wooded districts, California to Brit. Columbia. 
T. rivale Watson Proc. Am. Acad. xx, 378. Rhizome oblong, 6-10 
lines long, horizontal: stem slender, 2-10 inches long, erect or ascending, 
leaves ovate, obtuse and apiculate to acute or acuminate, 144-3 inches long: 
rounded or subcordate at base, on petioles 4-10 lines long: flower on a 
slender usually declined peduncle 1-3 inches long: sepals broadly lanceo- 
late, acute to acuminate 6-10 lines long: petals broadly lanceolate to ovate, 
acute to acuminate, narrowed below to a claw, but little longer than the 
sepals, white, speckled with purple near the centre: stamens about equal- 
ling the short recurved stigmas: capsule slightly if at all lobed.. On rocky 
banks in the Coast Mountains, southern Oregon and adjacent California. 
OrpdER XCVIII MLANTHACEA® R. Br. Prodr. i, 272. 
Leafy-stemmed herbs with rootstocks or bulbs, broad or 
