750 FLORA. 



entire. Stamens 5, inserted low down on the tube of the corolla and 

 alternate with its lobes, all anther-bearing, the filaments filiform, or 

 dilated at the base ; anthers 2-celled, the sacs longitudinally dehiscent. 

 Disk annular or none. Ovary superior, sessile, 2-3-celled, with 2 ovules 

 in each cavity, or falsely 4-6-celled with a single ovule in each cavity, 

 entire or 2-4-divided ; styles 1-3, terminal, or arising from between the 

 ovary-divisions ; ovules anatropous. Fruit a 2-4-valved capsule or of 

 2-4 distinct carpels, in our species. Seeds erect, the testa villous, pubes- 

 cent or glabrous; embryo plaited or crumpled ; cotyledons foliaceous ; 

 endosperm fleshy or cartilaginous, usually scanty. About 40 genera and 

 900 species, of wide distribution. 



Ovary 2-divided, the carpels 2-ovuled ; creeping herbs. i. Dichondra. 



Ovary entire, 2-4-celled ; style simple, cleft or divided. 

 Style 2-cleft or 2-divided. 



Style 2-cleft or 2-parted. 2. Breweria. 



Style 2-divided to the ovary, each division 2-cleft. 3. Evolvulns. 



Style entire up to the stigma. 



Stigma or stigmas capitate or globose. 



Corolla salverform ; stamens and style exserted. 4. Quamoclit. 



Corolla funnelform or campanulate ; stamens and style included. 



5. Ipomoea. 

 Stigmas 2, filiform to oblong. 6. Convolvulus. 



1. DICHONDRA Forst. 



Prostrate or creeping slender herbs, with nearly orbicular cordate or reniform 

 petioled entire leaves, and small solitary axillary peduncled Mowers. Sepals 

 nearly equal. Corolla open-campanulate, deeply 5-lobed. Stamens shorter than 

 the corolla; filaments filiform. Ovary villous, deeply 2-parted, each lobe 2- 

 celled; styles 2, simple, arising from the bases of the ovary-lobes; stigmas capi- 

 tate. Fruit of 2 pubescent 2-valved or indehiscent i-2-seeded capsules. [Greek, 

 two-grained, referring to the capsules.] About 5 species, natives of warm and 

 tropical regions. 



i. Dichondra Carolinensis Michx. CAROLINA DICHONDRA. (I. F. f. 

 2938, as/X evolvulacea.} Somewhat pubescent, or glabrous; stems almost filiform, 

 rooting at the nodes, 1.5-6 dm. long. Leaves orbicular to reniform, deeply 

 cordate, 6-30 mm. in diameter, palmately veined ; petiole often much longer than 

 the blade; flowers 2-4 mm. broad; peduncles filiform; sepals obtuse, spatulate or 

 pbovate, villous; corolla yellow to white, shorter than the sepals, its lobes ovate to 

 oblong; capsule 3 mm. high or less. In moist or wet places, Va. to Tex. and Mex., 

 near the coast. Widely distributed in Central and S. Am. 



2. BREWERIA R. Br. 



Herbs, mostly perennial and procumbent, with entire short-petioled or sessile 

 leaves, and 1-5 -flowered axillary peduncles. Corolla campanulate or funnelform. 

 campanulate: limb plaited, 5-angled or slightly 5-lobed. Stamens included. 

 Ovary 2-celled; style 2-cleft or 2-parted; stigmas capitate. Capsule, 2-celled, 2- 

 4-valved. Seeds 1-4. [Named for Samuel Brewer, a correspondent of Dillen.] 

 About 30 species, widely distributed in warm- temperate and tropical regions. 



Sepals acute or acuminate ; leaves oblong, elliptic or linear. 



Corolla white ; filaments pubescent ; plant pubescent. i. B. humistrata. 



Corolla purple ; filaments glabrous ; plant silky-tomentose. 2. B. aquatica. 



Sepals obtuse; leaves narrowly linear. 3- B. Pickeringii. 



i. Breweria humistrata (Walt.) A. Gray. SOUTHERN BREWERIA. (I. F. f. 

 2939.) Pubescent or puberulent; stems slender. 3-6 dm. long, simple, or with a 

 few long branches. Leaves elliptic, oblong-elliptic, or ovate-oblong, obtuse and 

 mucronulate or some of them emarginate. 1-2.5 cm - wide. 2-5 cm. long; pedun- 

 cles slender, longer than the leaves, i-7-flowered. minutely bracted at the summit; 

 sepals oblong, 4-6 mm. long; corolla white, 12-16 mm. long; filaments pubescent; 

 capsule ovoid, acute, glabrous, about as long as the calyx. In dry pine barrens, 

 Va. to Fla. and La. May-Aug. 



