OF ARTS AND SCIENCES. 273 



l-seeded. — Lam. 111. t. 266, f. 2; Ker, Bot. Mag. t. 1316 ; Meehan, 

 Nat. Fl. 2. 157, t. 40. Gyromia Virginica, Nutt. Canada to Florida 

 and Arkansas. 



38. TRILLIUM, Linn. 



* Ovary and fruit 6-angled and more or less winged. (Mature fruit very im- 

 perfectly known.) 



-i- Flowers sessile : the broad connective produced beyond the anther-cells. 



1. T. sessile, Linn. Leaves sessile, broadly ovate or rhomboidal, 

 acute, somewhat cuneate or sometimes broadly rounded at base, l 1 to 

 5 inches long : sepals spreading : petals narrowly lanceolate to ob- 

 lanceolate, acute or acutish, \ to 3 inches long, brown-purple or rarely 

 greenish-white : stamens erect, usually exceeding the stout suberect 

 stigmas; filaments \\ lines long or less. — Curt. Bot. Mag. t. 40; 

 Lodd. Bot. Cab. t. 875; Fl. Serres, t. 2311. T. viride, Beck. 

 T. discolor (?), Chapman, Flora, 478. Pennsylvania to Wisconsin, 

 south to Florida and Alabama. 



Var. Wrayi. Petals spatulate, obtuse, greenish, an inch long. — 

 T. discolor, Wray ; Hook. Bot. Mag. t. 3097. Georgia. 



Var. Nuttallii. Upper stem and nerves of the leaves beneath 

 rough-pubescent : petals linear-lanceolate, purplish-green with brown 

 base, 2 inches long. — T. viridescens, Nutt. Trans. Amer. Phil. Soc. 

 2. 5. 155. Arkansas. 



Var. Californicum. Stouter: leaves broadly rhombic-ovate, 3 

 to 6 inches long : petals oblanceolate to rhombic-obovate, 1 to 4 inches 

 long, purple or rose-color or white : anthers 6 to 9 lines long, usually 

 considerably exceeding the stigmas. — Vars. giganteum and chlorope- 

 talum, Torr. in Pacif. R. Rep. 4. 151. California (San Luis Obispo 

 northward) to Oregon. 



Var. angustipetalum, Torr. 1. c. Similar, but the leaves some- 

 what petiolate ; petals narrowly oblanceolate to linear. — Var. gigan- 

 teum, Hook. & Arn. Bot. Beechey, 402. California to Oregon ; less 

 frequent. 



2. T. recurvatum, Beck. Leaves petioled, ovate to ovate-oblong, 

 usually acute at both ends : sepals reflexed : petals oblong-lanceolate, 

 narrowed to a claw at base, 9 to 18 lines long, brown-purple : stamens 

 incurved, much exceeding the stigmas ; filaments 2 or 3 lines long. — 

 Am. Journ. Sci. 11. 178. T. unguiculatum, Nutt. 1. c. Wisconsin to 

 Indiana and Arkansas. 



Var. (?) lanceolatttm. Leaves sessile, more narrowly lanceolate : 

 sepals less strictly reflexed ; petals more narrowly lanceolate or nearly 

 vol. xiv. (n. s. vi.) 18 



