334 PENTANDRIA MONOGYNIA. 



HAB. Moist grounds. May, 1\. ; leaves rarely subcordate ; pet. 



ovate, lowest one veined. 

 V. blanda : leaves broad-cordate, slightly pubescent above ; sinus 



rounded ; petiole smooth ; flowers beardless. 

 HAB. Wet grounds. April May, 1J. ; leaves nearly flat membran., 



often subrenif. ; Jlower odorous. 



* * Caulescent. 



V. canadensis : nearly smooth; leaves cordate, acuminate, serrate-, 

 peduncles shorter than the leaves ; petals oblong, narrow ; stipules 

 ovate-lanceolate, entire. 



HAB. Moist rocky woods. May July, *4 ; stem 418 in. high, 

 erect, simple ; Jlower large, blue. 



V, Muhlenberghii: stem weak, assurgent; leaves reniform-cordate ; 

 the upper ones a little acuminate, crenate-serrate, smooth ; stipules 

 lanceolate, serrate-ciliate ; nectary produced; stigma tubular, ros- 

 trate. 



HAB. Swamps. May, Tj. ; stem 6 10 in. long, branched below ; 

 bracts alternate ; Jlowers blue. 



V. rostrata : smooth ; stem diffuse, erect ; leaves cordate, the upper 

 ones acute, serrate ; stipules lanceolate, serrate-ciliate ; petals beard- 

 less ; nectary longer than the corolla. 



HAB, Wet rocky places. April May, 7J.; stem 6 in. high; pe- 

 dunc. long ; Jlower large, blue; stigma subclavate. 



V. pubescent : villous pubescent ; stem erect, naked below ; leaves 

 broad-cordate, toothed ; stipules ovate, subdentate. 



HAB. Dry stony woods. April May; stem simp., 6 8 in. high, 

 bracteate ; leaves 2 3 ; Jlower yellow. 



b. eriocarpa : capsule densely villous. 



117. CLAYTONIA. 



C. virginica : leaves linear-lanceolate ; petals obovate, retuse ; leaves 



of the calyx somewhat acute ; root tuberous. 

 HAB. Moist woods. April May, r l\.; smooth, erect or procumb. 



leaves Jew, opposite ; Jlowers raceme., rose-col, 

 b. latifoUa : leaves ovate-lanceolate ; leaflets of the calyx obtuse. 

 HAB. Mountainous districts. 



118. CEANOTHUS. New Jersey tea. 



C. americanus : leaves ovate-oblong, serrate, triply-nerved, tomentose- 

 pubescent beneath ; panicles axillary, on long peduncles. 



HAB. Woods and copses. July, 1? ; root large, red ; stem 2 kfeet 

 high ; leaves alternate ; Jl. minute, white. 



119. CELASTRUS. Staff-tree. 



C. scandens : stem climbing, unarmed; leaves oblong, acuminate, 



serrate ; racemes terminal ; flowers dioecious. 

 HAB. Woods and thickets. June, b ; leaves alternate, stipulate : 



raceme fcw-Jl. ; pet. greenish-yel. fruit red. 



