100 TRILLIUM. No. 91. 



16. Tr.flavum. Raf. Leaves sessile, rhomboidal acu- 

 ininatCj trinerve : peduncle as long, erect, flower nod-. 

 ding : caljx narrow lanceolate, petals longer lanceolate, 

 yellow, acute- In the mountains from New York to 

 Virginia, rare- 



17. Tr, pendulum. Wildenow\ Leaves sessile, rhom- 

 boidal acuminate, base acute, trinerve: peduncle in- 

 clined, flower drooping; caljx and petals subequal, 

 oval acuminate, petals white, with red veins. In the 

 mountains Catskill, Alleghany, &c. 



18. TV. iindulatiirn. Raf. 1807. W. and Elliot. Leaves 

 sessile, ovate acuminate, undulate, trinerve : peduncle 

 erecty calyx lanceolate, petals much longer, undalat^ 

 oblong, obtuse, dark purple. Mountains Alleghany in 

 Pennsylvania, &c. 



19. TV. hrevvpetalum. Raf. Leaves, sessile, ovate 

 rhomboidal acuminate, base acute, trinerve : peduncle 

 erect, elongated, calyx lanceolate acute j petals shorter, 

 ovate, undulate, acute, white. Near the lakes Ontario 

 and Erie. Var. L Latifolinm. 2. Boseum. 



20. Tt. ovatum, Pursh. Leaves sessile, ovate, gra- 

 dually acute, trinerve : peduncle erect, calyx linear, 

 petals longer and larger, oblong lanceolate acute, and 

 purple.^ Southern States. 



21. TV. obovatum. Pursh. Leaves sessile, ovate rhom- 

 boidal, acuminate : peduncle erect, calyx oval lanceo- 

 late, petals equal obovate obtuse flat, flesh colored. 

 From Canada to Ohio. 



22.TV.g-m?^r//^omm.Salisbury.(TV. rhomboidum Mx.) 

 Leaves sessile, ovate rhomboidal, acuminate, base acute, 

 5 ner\'ed, reticulate: peduncle inclined, elongated, ca- 

 lyx ovate, lanceolate acute, petals longer, obovate acute, 

 white. From lake Ontario to Virginia and Kentucky, 

 Petals thin, reticulate, forming a campanulate flower, 

 base connivent. Var. 1. Roseum. 2. Elatior. 3. Rhom- 

 boideum. A, Fumihmi. S.ParviJforitm. G. Meter opium. 

 T.Obovalum. 8. Longifolium. Often called Ground 



l^uy, as well as the following species. 

 23.^ T'r, lirioides. Raf. Leaves shortly petiolate, ovate 



acuminate, base rounded, trinerve and reticulate : pe- 



""f.l I '''' ^"^ *^*'^^*^ calyx oval lanceolate obtuse ; 

 peiais larger, oblong cuneate obtuse, white. Near lake 



