SMILACACEAE ^'^ 



—Pennsylvania : Monroe ; Northampton ; Chester ; Lancaster ; 

 Huntingdon ; Erie ; Somerset ; Pike ; York ; Dei^aware ; Ali^e- 



GHENY. 



2. TRILLIUM L. 



Flower sessile. i. T. sessile. 



Flower pedicelled. ♦ 



Bracts not narrowed into petiole-like bases. 

 Peduncles erect, or rarely declined, then several times longer than the 

 sepals. 

 Petals lanceolate, slightly longer than the sepals. 2. T. erectum. 

 Petals oblanceolate orobovate-oblanceolate, much longer than the sepals. 



3. T. p^randiflorum. 

 Pedicels recurved or declined, shorter than the sepals or only slightly 

 longer. 4. T. cernuum. 



Bracts narrowed into petiole-like bases. 

 Blades of the bracts acuminate at the apex : petals veiny, over 2.5 cm. long. 



5. T. undiilalum. 

 Blades of the bracts obtuse at the apex : petals not veiny, less than 2.5 cm. 

 long. 6. T. nivale. 



1. Trillium sessile L. SessilE-flowerEd Wake-ROBIN. (Man. p. 

 274; I. F. /. 104J.) In moist woods atid thickets, Pa. to Miun., Fla., 

 Miss, and Ark. — Pennsylvania : Allegheny ; Washington ; Erie. 



2. Trillium erectum L. Ill-.scented Wake-robin. (Man. p. 275 ; 

 I. F. /. JO^y.) In woods, N. S. to James' Bay and Man., N. C, Tenn, 

 and Mo. — Pennsylvatiia : Monroe ; Bucks ; Lancaster ; York ; Sul- 

 livan ; Venango ; Blair ; Huntingdon ; Clinton ; Erie ; Somer- 

 set ; Allegheny. 



3. Trillium gran diflorum (Michx.) Salisb. Large-flowered Wake- 

 robin. (Man. p. 275; I. F. /. io.f.6.) In woods, Quebec to Minn., Fla. 

 and Mo.— Pennsylvania : Lanc.\ster ; Susquehanna ; Elk ; Ve- 

 nango ; Allegheny ; Erie. 



4. Trillium cernuum L. Nodding Wake- robin. (Man. p. 275; I. 

 F. /. /04S.) In rich woods, N. S. to Minn., Ga. and Mo .— Pennsylva- 

 nia: Northampton; Philadelphia; Lancaster; Dklaware ; 

 Montgomery. 



5. Trillium undulatum Willd. Painted Wake-ROBin. (Man. p. 

 275 ; I. F. /. i04g.) In woods, N. S. to Wis., Ga. and Mo.— Pennsylva- 

 nia : Monroe ; Carbon ; Schuylkill ; Centre ; Huntingdon ; 

 Blair ; Cambria ; Erie ; Somerset ; Lackawanna. 



6. Trillium nivale Ridd. Early Wake-ROBIN. (Man. p. 274 ; 1. F. 

 /. 1045.) In woods and thickets. Pa. to Minn., Ky. and Iowa. — Penn- 

 sylvania : Westmoreland ; Allegheny. 



Family 6. SMILACACEAE Vent. Smilax Family. 



1. SMILAX L. 



A. Stems herbaceous, annual, unarmed : ovules 2 in each cavity. 



Peduncles becoming much longer than the subtending bracts: leaf-blades 

 prominently 7-9-nerved. i. S. herbacea. 



