OP ARTS AND SCIENCES. 275 



♦+ ++ Pedicel short : filament slender, about equalling the anther. 

 = Pedicel recurved or strongly declinate. 



7. T. cernuum, Linn. Leaves sessile or nearly so, very broadly 

 rhombic-ovate, 2 to 4 inches broad : petals white, ovate-lanceolate, 

 6 to 12 lines long: stamens with short anthers, shorter than the stout 

 recurved distinct stigmas : fruit ovate, 3-beaked. — Curt. Bot. Mag. 

 t. 954. British America (Newfoundland to Mackenzie River) to 

 Georgia. 



8. T. stylosum, Nutt. Leaves ovate-lanceolate, acute at each end 

 and shortly petiolate, 2 to 4 inches long : petals rose-colored, oblong, 

 acute, strongly curved and undulate, 9 lines to 2 inches long : stamens 

 much exceeding the slender somewhat united stigmas : fruit oblong, 

 with a stout beak. — T. nervosum and Catesbcei, Ell. N. Carolina to 

 Florida. 



= = Pedicel erect. (Doubtful species.) 



9. T. pusillum, Michx. Stem 6 to 8 inches high : leaves sessile, 

 lanceolate or oblong, obtuse, 1^ to 2 inches long: petals lanceolate, 

 acutish, pale flesh-color, 8 to 10 lines long : sepals obtuse : stigmas 

 slender, united below. — Chapm. Flora, 478. Pine-barrens of North 

 and South Carolina. The description of T. Texanum, Buckl. (Proc. 

 Acad. Philad. 1860, 443), from N. E. Texas, is essentially the same. 

 Both plants are known only from the descriptions. 



* * Ovary and fruit 3-lobed or angled, not winged : flowers pedicelled : leaves 

 petiolate : the slender filaments about equalling the anthers. 



10. T. nivale, Riddell. Low : leaves ovate to lanceolate, obtuse, 

 an inch or two long : pedicel erect or declined, short : petals oblong or 

 oblanceolate, obtuse or acutish, 6 to 15 lines long, white : stamens 

 usually shorter than the long slender stigmas : fruit depressed globose, 

 with 3 rounded lobes, 3 or 4 lines long. — Syn. Fl. W. States, 93. 

 Western Pennsylvania to Kentucky, Iowa and Wisconsin. 



1 1. T. ervthrocarptjm, Michx. Leaves ovate, acute or acuminate, 

 2 to 6 inches long: pedicel erect or inclined, often exceeding the 

 flower : petals oblanceolate, often broad, acute or acuminate, wavy, 

 white with purplish base, an inch long : stamens about equalling the 

 very slender stigmas : ovary 3-angled : fruit broad-ovate, obtuse, 

 7 to 9 lines long. — Sweet, Fl. Gard. t. 212 ; Lodd. Bot. Cab. 1. 1232 ; 

 Hook. Bot. Mag. t. 3002. T. undulatum, Willd. T. pictum, Pursh. 

 New Brunswick to Wisconsin and Georgia, on high mountains or in 

 cold damp woods. 



