UMBELLIFER^E. 139 



T. cordifolia Linn. : leaves cordate, acutely lobed, dentate ; teetk 

 mucronate ; scape racemed ; petals with long claws. 



HAB. Shady rocks. Can. and N. S. May. U Scape 810 

 inches high. Flowers white, in a simple terminal raceme. 



Mitre-wort. 



6. HEUCHERA. Linn. 



Calyx persistent, 5-cleft. Petals 5, inserted on the calyx. 

 Stamens 5. Styles 2, distinct, as long as the stamens. Cap- 

 sules with 2-beaks^ 1-celled, many-seeded. 



Pentandria. Digynia. 



1. H. americana Linn. : vicidly pubescent ; scape and leaves some- 

 what scabrous ; leaves radical, on long pubescent petioles, with round- 

 ed and dentate lobes ; flowers in a long terminal panicle or thyrse ; 

 calyx short, obtuse ; petals lanceolate, as long as the calyx ; stamens 

 exserted. H. cortusa Mich. H. viscida Pufsk. 



HAB. Shady rocks. N. Y. to Geor. W. to Miss. June, July. If . 

 Scape 2 3 feet high. Floicers small, red, in a long simple pani- 

 cle. This species has been found by Dr. Samuel B. Mead near 

 North Salem, Westchester county, N. Y. Alum-root. 



2. H. pubescens Pursh: pulverulent-pubescent ; scape smooth be- 

 low ; leaves somewhat acutely lobed, smooth beneath, toothed ; teeth 

 rounded, mucronate ; peduncles short, with crowded flowers ; calyx 

 large, bell-shaped; petals longer than the calyx ; stamens scarcely 

 exserted. 



HAB. Mountains. Penn. and Virg. May, June. 1 



2 feet high. Flowers large, red with yellow. 



7.1 ITEA. Linn. 



Calyx 5-cleft, campanulate. Petals 5, linear reflexed, in- 

 serted into the calyx. Stamens 5. Style 1. Stigma capi- 

 tate, 2-lobed. Capsule 2-celled, 2-valved ; valves bent in- 

 wards. (Placed by Dr. Torrey, with a mark of doubt, under 

 this order ; by other botanists under Ericea. Its true place 

 does not appear to be fully settled.) Pentandria. Monogynia. 



I. virginica Linn. 



HAB. Borders of swamps. N. J. to Car. June. ^>. Shrub 

 4 8 feet high, branching. Leaves alternate, lanceolate, acumi- 

 nate, serrulate, pubescent beneath. Flowers white, in simple 

 terminal racemes. 



ORDER LVIII. UMBELLIFER^E. Dt Cand. Lind. 



Calyx, superior, either entire or 5-toothed. Petals 5, in- 

 erted on the outside of a fleshy disk. Stamens 5, alternate 



