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Conwallariaceae 109 
STREPTOPUS TWISTED-STALK 
Stem branched or simple. Leaves wide, alternate, sessile. Flowers axillary, soli- 
tary or 2 on a forked peduncle. Perianth either narrowly campanulate or rotate; seg- 
ments 6, distinct, deciduous. Stamens 6, on base of perianth; anthers sagittate. Ovary 
sessile, 3-celled; cells many-ovuled; style deciduous; stigma 3-lobed or -cleft or entire. 
Fruit a berry. Seeds oblong, many. (Gk. streptos—twisted, pous—foot; because the 
peduncles are bent or twisted about the middle.) 
A. Flowers rotate. C. (Kruhsea streptopoides; S. brevipes.) 
S. streptopoides (Ledeb.) 
AA. Flowers narrowly campanulate. 
B. Leaves glaucous beneath, strongly clasping at base; flowers greenish-white; per- 
ianth-segments in maturity recurved from near middle; stigma entire; anthers many 
times as long as the filaments. W. C. E. 
S. amplexifolius DC. 
BB. Leaves green on both sides, not clasping, but sessile; flowers rose-purple; per- 
ianth-segments in maturity recurved only at tip; stigma 3-cleft; anthers about equal- 
ing the filaments. W. C. E. 
S. roseus Michx. 
SCOLIOPUS 
Glabrous, nearly acaulescent; rhizome short. Leaves 2, wide, basal, subtended by 
scarious sheaths. Inflorescence an umbel, few-flowered, nearly sessile. Flowers on long 
pedicels. Perianth-segments 6, distinct, deciduous, somewhat similar in color. Sepals 
3, lanceolate, several-veined. Petals 3, narrower than the sepals, 3-veined. Stamens 3, 
on base of sepals; anthers extrorse. Ovary sessile, strongly 3-angled, I-celled; placentae 
3; ovules 30; style 1, persistent; stigma 1. Fruit a capsule, bursting irregularly. Seeds 
several, longitudinally ridged. (Gk. skolex—a worm, pous—a foot; referring to the 
worm-like scape.) U. C. S. hallii Wats. (Twin-leaf) 
TRILLIUM TRILLIUM 
Glabrous; rhizome short, tuber-like; stem short, simple, with scarious sheaths at 
base. Leaves 3 in a whorl at the tip, wide, rather large, netted-veined but the chief 
veins arising at the base. Flower |, terminal. Perianth-segments distinct. Sepals 3, 
green, lanceolate, spreading, persistent. Petals 3, white or red. Stamens 6, hypogynous. 
Ovary sessile, 3—6-angled or 3—6-lobed, 3-celled; styles 3. Fruit a capsule, 3-celled 
or imperfectly |-celled, berry-like. Seeds many. (L. trilix—triple; because leaves and 
flower-parts are in 3’s.) 
A. Flowers sessile. 
B. Leaves sessile, mottled; petals whitish; sepals obtuse; anthers white. W. 
T. chloropetalum How. (Mottled Trillium) 
BB. Leaves long-petioled, usually not mottled; petals brown-purple; sepals acute; 
anthers dark-purple. E. T. petiolatum Pursh (Purple Trillium) 
AA. Flowers with peduncle 2.5—7.5 cm. long. 
C. Ovary 3-lobed or -angled; leaves oblong. U. 
T. rivale Wats. 
CC. Ovary 6-angled; leaves rhombic-ovate. W. C. E. (7. crassifolium; T. 
scoulcri.) T. ovatum Pursh 
