CAMPANULACE^E. 213 



alternately with the lobes of the corol, to which they are equal 

 in pumher ; anthers 2-celled, "distinct"; .pollen spherical. Ova- 

 ry inferior, with 2 or. more polyspermous cells opposite the 

 stamens or alternate with them ; style simple, covered with 

 collecting hairs '; -stigma naked, simple, or with as many Jobes 

 as there are cells. Fruit dry, crowned by the withered calyx 

 and corol, dehiscing by lateral irregular apertures, or by 

 valves at the apex, always loculicidaJ. Seeds 'numerous, ..at- 

 tached to a placenta in the axis ; embryo' straight, in the axis 

 of .fleshy albumen ; radicle .inferior. . 



Herbs or undersJirubs yielding a white. milk. Leaves sim- 

 ple or deeply divided, without stipules.* 



1. CAMPANULA. Linn. 



Calyx mostly 5-cleft. Corol campanukite, the base closed 

 with 5 staminiferous valves. Stigma 3 5-tleft. Capsule. 

 inferior, 3- (rarely 5-) celled, opening by laleral pores. 



Pentandria. JMLonogynia* 



1. C. rotundifoUa Linn. : glabrous ; stem erect, slender, somewhat 

 branched at base.; radical leaves reniform-cordate, crenate or cut ; .can- 

 line ones linear, entire ; panicle lax, few-lowered. 



HAB. Rocky banks. N. S. N. tp Subarc. Amef. W. to Rocky 

 Mountains. -June, July. If. Stem 8 12 inches high. Radi- 

 cal leaves cordate, (withering early.) Flowers few, large, blue, 

 in a loose terminal panicle or raceme. ' Flax Bell-floiccr. 



2. C. amplexicaulis Mich. : stem simple, erect, angular ; angles his- 

 pid backwar'ds ; leaves cordate, toothed, clasping ; flowers sessile, 1 5 

 in the axil of each leaf. C. perfoliata Linn. ' 



HAB. Fields. Can. to Geor. W. to Miss. May July. 0. 

 Stem 8 12 inches high. .- Leaves sessile, closely embracing the 

 stem, but never perfoliate. Flowers small, sessile, 1 4 in the 

 axil of the leaf, purple. Clasping Bell-Jlo'wer. 



3. C- ameiicana Linn. : stem simple, smooth ; leaves, ovate-lanceo- 

 late, much Acuminate, membranaceoiis, uncinately serrate ; lower ones 

 somewhat cordate, with the -petioles ciliate ; flowers subsolitary, nearly 

 sessile, in a terminal leafy raceme ; corol s'ubrotate ; style ex'serted. 

 C. acuminata Sfich. 



' HAB. Mountains and rocks. Niagara Falls" and S. to Geor. 

 July, Aug. -If: Stem 23 feet' high. Flowers blue, flat, 1 2 

 in the axils of the leaves. 



4. C. aparinoides Pursk : stem slender, much branched, acutely 

 angled ; .angles with the margin and nerves of the leaves aculeate 

 backwards ,' leaves linear-lanceolate, sessile, somewhat serrate, smooth 



