PENTANDRIA MONOGYNIA. 331 



HAB. Waste places. July Sept. <;?> ; stem 2 Ifeet high, dichot., 



green ; flower solitary, axillary, white. 

 b. Tatula : stem and flowers purple. 



107. PHYSALIS. Ground-cherry. 



P. obscura : pubescent ; stem prostrate, divaricate ; leaves broad cor- 

 date, subsolitary, unequally and coarsely toothed; flowers solitary, 

 nodding ; calyx very hairy. 



HAB. Woods and hills. August, <v) ; stem forked leaves on long 

 petioles ; Jlower pedunc., dull yellow. 



108. SOLANUM. Nightshade. 



S. Dulcamara : stem fruticose, flexuous, without thorns ; leaves ovate-- 

 cordate ; superior ones hastate ; corymbs opposite the leaves. 



HAB. Low grounds. July August, Fj ; climbing ; Jlowers in 

 lateral clusters, violet, berries red. 



S. nigrum b. virginianum : stem herbaceous, without thorns, angular, 

 toothed ; leaves ovate, obtusely toothed and waved ; flowers subum 

 belled. 



HAB. Old fields, &c. July Aug. ; stem diffuse, slightly vying- 

 ed ; Jlower white ; berries black. 



109. CAMPANULA. Bell-flower. 



C. rotundifolia : glabrous; radical leaves reniform-cordate, crenate; 



cauline ones linear, entire ; panicle lax, few-flowered. 

 HAB. Rocky river banks. June, 7J.; root creeping; stem erect: 



Jlowers few, drooping, blue. 

 C. amplexicaulis : stem simple, erect ; leaves cordate, crenate, amplex- 



icaul ; flowers axillary, sessile, glomerate. 

 HAB. Fields and dry hills. May July, <v) ; stem 8 12 inches high, 



hispid ; leaves veined ; Jlower purple. 

 C. aparanoides : stem slender, branched, acutely subtriangular ; angles 



with the margin and nerves of the leaves, retrorsely aculeate ; leaves 



linear-lanceolate, smooth above ; peduncles few, terminal, filiform, 



flexuous, 1 -flowered. 

 HAB. Wet meadows. June August, <2> ; erect or diffuse, one foot 



high ; leaves dentic. ; Jlowers small, white. 



110. LOBELIA. 



L. Dortmanna : leaves linear, fleshy, 2-celled, obtuse ; scape nearly 

 naked ; flowers racemed, remote. 



HAB. Swamps subaquatic. July, 1|-; leaves immersed; radical 

 ones spreading ; scape long, 3 ^-flowered ; cor. blue. 



L. kalmii : whole plant smooth ; stem slender, erect, branched ; leaves 

 linear, remotely denticulate ; radical ones spathulate ; raceme lax, 

 few-flowered, leafy ; peduncles longer than the fruit, with two minute 

 bracts near the flower ; capsule attenuate at the base. 



HAB. Rocky banks of rivers. July August, ^ 1 stem 12 18 inch- 

 es high ; peduncle one inch long ; Jlower pale blue. 

 29* 



