TRILLIACEAE 277 
Petals purple or purplish brown: stamens with purple filaments 
and connectives: ovary purple. 14. T. erectum. 
Petals whiteor pinkish: stamens with pink or reddish filaments 
and connectives: ovary pink or red. 15. T. album. 
++ Filaments slender, as long as the anthers or nearly so. 16. T. Vaseyi. 
** Petals oblanceolate or obovate-oblanceolate, much longer than the 
sepals. 17. T. grandiflorum. 
b. Pedicel recurved or declined, shorter or slightly longer than the sepals. 
Bracts rhombic or orbieular-i hombie: filaments as longas the anthers. 18. T. cernuum. 
Bracts oval or elliptic: filaments longer than the anthers. 19. T, stylosum. 
B. Bracts narrowed into petiole-like bases. 20. T. undulatum. 
1. Trillium discolor Wray. Scapes 1-2dm. tall, smooth: bracts 3; blades oval, 6-7 
cm. long, obtuse, or short-acuminate, 3-5-nerved, mottled, rounded at the base: flower ses- 
sile: sepals oblong or oblong-lanceolate, 2 cm. long, obtuse or acute, spreading: petals 
broadly spatulate, greenish, sessile, rounded, and one usually apiculate at the apex : 
stamens less than 3 as long as the petals, the filaments nearly wanting : berry not seen. 
In pine woods, North and South Carolina and Georgia. 
2. Trillium stamineum Harbison. Scapes sometimes clustered, 1-3 dm. tall, pubes- 
cent near the top: bracts 3; blades ovate-lanceolate to broadly ovate, 5-8 cm. long, acute 
or acuminate, mottled and usually somewhat pubescent on the veins beneath, sessile : 
flower sessile, fetid: sepals broadly lanceolate to elliptic, 2-3 cm. long, deeply purple- 
tinged, spreading or finally reflexed: petals lanceolate, dark purple, widely spreading and 
somewhat twisted, somewhat narrower than the sepals: stamens 3-3 as long as the petals : 
anthers stout, 15-18 mm. long, dark purple, straight : filaments very short, colored like 
the anthers: stigmas slender: berry ovoid, about 1 cm. in diameter, pale purple. 
In roeky woods, Georgia, Alabama and Mississippi. 
3. Trillium decümbens Harbison. Scapessolitary or sometimes clustered, 4-10 cm. 
long, rough-pubescent at the summit: bracts 3; blades ovate, broadly ovate or suborbicu- 
lar, 4-8 cm. long, 3-6 em. wide, acute or obtuse, rounded at the base, sessile, usually pu- 
bescent on the nerves beneath, mottled: flower sessile: sepals lanceolate, occasionally 
somewhat broadly so, 2-3 cm. long, acute, purplish at the base, green above: petals linear 
or linear-lanceolate, 4-7 cm. long, acute, erect, purple: stamens 4—} as long as the petals: 
filaments very short, the connective much prolonged beyond the anther-sacs: stigmas 
short : berry ovoid, about 1 cm. in diameter, prominently and sharply angled, the angles 
in pairs. 
In rocky woods, northeastern Alabama. 
4. Trillium séssile L. Scapes solitary or clustered, 1-2 dm. tall, slender: bracts 3: 
blades oval or suborbicular, 4-8 cm. long, rounded at the base, sessile, not mottled : flower 
sessile: sepals lanceolate, 2-3 cm. long, acute or acutish : petals narrowly elliptic, sessile, 
acutish, purple: stamens about 4 as long as the petals: filaments dilated at the base, 3-1 
shorter than the anthers : stigmas elongated : berry broadly ovoid, 1-1.5 cm. long. 
In woods, Pennsylvania to Minnesota, Florida and Mississippi. 
5. Trillium Underwoddii Small. Scapes solitary or clustered, 1-3 dm. tall, stout : 
bracts 3; blades lanceolate to ovate-lanceolate, 10-18 cm. long, acute or short-acuminate, 
with a velvety luster, mottled with three shades of green, sessile: flower often musk- 
scented : sepals lanceolate, 4.5—5.5 em. long, green or purplish green: petals lanceolate, 
elliptic or oblanceolate, 5.5-8.5 cm. long, sessile, acute or obtuse, erect, purple : stamens 
3-4 as long as the petals: filaments less than 2 mm. long: anthers 1-1.5 cm. long, subses- 
sile: stigmas recurved : berry ovoid, 1.5-2 em. long. 
In woods and fields, North Carolina to Tennessee, Florida and Alabama. 
6. Trilium Hügeri Small. Scapes relatively stout, 1-2.5 dm. tall: bracts 3; blades 
suborbicular to broadly ovate, 10-14 cm. long, abruptly pointed, bright green, typically not 
mottled: flowers sessile, musk-scented : sepals oblong to oblong-lanceolate, 4-5.5 cm. long, 
green : petals oblong-lanceolate to spatulate, purple, somewhat longer than the sepals : fila- 
ments over 2 mm. long: anthers 1-2 cm. long: berry broadly ovoid. 
In rich woods, North Carolina and Tennessee to Florida. Spring. 
7. Trillium lüteum (Muhl. ) Harbison. Scapes 1.5-3 dm. tall, purplish at the base : 
bracts 3 ; blades orbicular to orbicular-ovate, 1-2 dm. long, acuminate or abruptly pointed, 
rarely slightly mottled, rounded or abruptly contracted at the base: flower sessile, lemon- 
scented: sepals lanceolate, sometimes narrowly so, 4-5 em. long, acute or acutish, green : 
petals lanceolate, to oblong-elliptic, 6-8 cm. long, acute or acutish, bright yellow or lemon- 
yellow: stamens about } as long as the petals: anthers 1.5-2 cm. long, nearly sessile : 
berry ovoid, 1.5-2 cm. long. 
In woods and on hillsides, North Carolina and Tennessee to Georgia. 
