278 TEILLIACEAE 



8. Trillium viride"scerjs Nutt. Scapes 4-6 dm. tall, rather slender, more or less pu- 

 bescent under the bracts: bracts 3 ; blades ovate, orbicular-ovate or elliptic, 1-1.5 dm. 

 long, acuminate, often abruptly so, 5-nerved, sessile : flower sessile : sepals narrowly linear- 

 lanceolate or almost linear, 4-5 crn. long, acute, green : petals conspicuously narrow ; claws 

 1.5-2 cm. long, purple or red ; blades narrowly linear-lanceolate or almost linear, fully 

 twice as long as the claws : filaments 2.5-5 mm. long : anthers 12-15 mm. long. 



On hillsides and in rich copses, Kansas and Arkansas. 



9. Trillium viride Beck. Scapes solitary, or several together, 1-2 dm. tall, purple, 

 rough-pubescent near the top, or glabrous at maturity : bracts 3 ; blades oblong to ovate 

 or rarely suborbicular, 5-11 cm. long, acute or obtusish, 3-5-nerved, usually blotched, more 

 or less pubescent on the nerves beneath, sometimes abruptly short-attenuate at the base : 

 flower sessile : sepals linear or linear-lanceolate, 2-4 crn. long, bright green : petals 2-4.5 

 cm. long, surpassing the sepals ; blades linear or linear-elliptic, light green or purplish 

 green ; claws colored like the blades : stamens about ^ as long as the petals : filaments flat- 

 tened, 2-3 mm. long : anthers 1.5-2 cm. long : berry not seen. 



In woods and glades, Missouri to North Carolina, Alabama and Mississippi. 



10. Trillium Ludovicianum Harbison. Scapes 0.8-2 dm. tall, smooth and glabrous : 

 bracts 3 ; blades ovate, to broadly ovate, 5-8 cm. long, sometimes obtuse, mottled, sessile : 

 flower sessile : sepals lanceolate to broadly lanceolate, 2-3.5 cm. long, acute or obtuse, 

 tinged with purple at the base, spreading or finally reflexed : petals with linear or linear- 

 lanceolate blades, 3-6 cm. long, scarcely as broad as the sepals but longer, purple, or green- 

 ish above a purple base, spreading : anthers straight or slightly recurved, 12-18 mm. 

 long ; filaments about 4 mm. long : berry ovoid, about 1 cm. in diameter, pale purple. 



In low rich woods, Louisiana and Mississippi. 



11. Trillium laiiceolatum Boykin. Scapes 1-4 dm. tall, slender, purplish, smooth, 

 sometimes curved : bracts 3 ; blades lanceolate or elliptic. 7-9 cm. long, acute or acutish, 

 more or less constricted at the base, sessile : flower sessile : sepals linear or linear-lanceo- 

 late, 2-2.5 cm. long, acute, green, spreading : petals clawed, 3-3.5 cm. long ; blades linear 

 or linear-oblong, acute ; claws about twice as long as the blades : filaments about as long 

 as the more or less incurved anthers : berry not seen. 



In moist woodlands and river bottoms, Georgia to Alabama and Louisiana. 



12. Trillium recur vatum Beck. Scapes 1-4 dm. tall, smooth : bracts spreading ; 

 blades ovate-lanceolate, oval or suborbicular, 5-9 cm. long, rounded or subcordate at the 

 base or rarely attenuate, often mottled, the petiole-like bases much shorter than the 

 blades : flower sessile, purple : sepals lanceolate, 2-3 cm. long, acute, finally deflexed : 

 petals clawed ; blades ovate, obovate or elliptic, usually acute, about twice longer than the 

 claws : filaments about ^ or J as long as the more or less incurved anthers : berry not seen. 



In woods, Ohio to Minnesota, Mississippi and Arkansas. 



13. Trillium pusillum Michx. Scapes slender, 1-2 dm. tall, smooth : bracts 3 ; 

 blades oblong or lanceolate, 3-4 cm. long, obtuse, 3-nerved, sessile : pedicel erect, 1 cm. 

 long : sepals lanceolate or oblong-lanceolate, about 1.5 cm. long, obtuse, spreading : petals 

 linear-oblong or lanceolate, somewhat longer than the sepals, pink, acutish : filaments about 

 ^ as long as the anthers : berry less than 1 cm. high. 



In pine lands, North Carolina and South Carolina. 



14. Trillium ere~ctum L. Scapes solitary or clustered, 3-6 dm. tall, smooth : bracts 

 3; blades rhombic, often broader than long, 6-16 cm. in diameter, acuminate at the apex, 

 more or less cuneate at the base, sessile : flower ill-scented : pedicel 3-10 cm. long, erect or 

 declined : sepals oblong or lanceolate, acuminate, 2-3.5 cm. long, spreading : petals lanceo- 

 late or ovate-lanceolate, surpassing the sepals, brown-purple : filaments stout, 3-4 mm. 

 long : berry about 2 cm. long, purple or nearly black, 6-angled. 



In woods, Nova Scotia to Manitoba, North Carolina and the mountains of Georgia, Alabama and 

 Missouri. BETH. 



15. Trillium alburn (Michx.) Small. Similar to 1. erectum in habit, but flowers 

 smaller : petals white or pinkish, less inclined to be acuminate, or sometimes obtuse : fila- 

 ments pink or reddish : anthers often 8-11 mm. long, with pale connectives colored like 

 the filaments : ovary pink or red : berry about as large as that of the next preceding spe- 

 cies but not as deeply colored. [ T. rhomboideum var. album Michx. ] 



In woods, North Carolina, Tennessee and Georgia. 



16. Trillium Vaseyi Harbison. Scapes erect, 3-6 dm. tall : bracts 3 ; blades oval 

 to broadly rhombic, 10-20 cm. broad, sometimes broader than long, slightly acuminate : 

 flower often with a rose-like fragrance : pedicel 4-8 cm. long, declined : sepals lanceo- 

 late, 4-6 cm. long, acuminate, more or less involute above the middle : petals ovate or 



