Breweria. CONVOLVULACEJE. 217 



corolla white or tinged with rose, half inch long, the angles salient-acuminate. Symb. 

 iii. 23 (1790). C. Bonariensis & C. dissectus, Cav. Ic. v. t. 480 (1799). C. equitans, Benth. PI. 

 Hartw. 16. C. hastutus, Nutt. in Trans. Am. Phil. Soc. ser. 2, v. 194. C.lubatus, Engelm. & 

 Gray, PI. Lindh. i. 44. C. ylaucifolitis, Choisy in DC. Prodr. ix. 412, but probably not Ipomaea 

 glaucifolia, L., viz. Dill. Elth. t. 87. fig. 101, which is " glaucous and glabrous." -- Dry- 

 prairies and hills, Arkansas and S. Colorado to Texas and Arizona. (Mex., Extra-trop. 

 S. Amer.) 



* * Erect and much branched feebly twining perennial, glabrous throughout, small-leaved. 

 C. longipes, ^ftfatson. Stems slender, loosely much branched, a foot to a yard high: 

 leaves mostly linear-hastate, short-petioled (an inch or two long, a line or two wide), 

 thickish, veinless, entire, cuspidate-mucronate, the upper gradually reduced to linear- 

 subulate bracts ; these on the 1-flowered peduncles mostly alternate : sepals ovate, obtuse, 

 often mucronulate, the outer shorter : corolla fully an inch long, broadly f unnelform, 

 glabrous throughout, white or cream-color: stigmas very narrowly linear: seeds globular, 

 minutely tuborculate. Am. Naturalist, vii. 302; Gray, Bot. Calif, i. 534; Rothrock in 

 Wheeler Rep. t. 20. Arid desert region, S. Nevada and S. E. California, Lieut. Wheeler, 

 Dr. Horn, Palmer. 



5. BREWERIA, R. Br. (/Samuel Brewer, an English Botanist or ama- 

 teur of the 18th century.) Chiefly perennial herbs, some suffruticose, of the 

 warmer parts of the world, resembling Ipomcea and Convolvulus ; with simple 

 entire and usually short-petioled leaves, and the corolla mostly silky-pubescent or 

 silky-hirsute outside in the bud, with angulate or obscurely lobed border: fl. 

 summer and autumn. Prodr. 487; Benth. & Hook. Gen. ii. 877. Stylisma, 

 Raf. in Ann. Sci. Phys. viii. 268 ; Choisy in DC. Prodr. ix. 450. Bonamia^ 

 Gray, Proc. Am. Acad. v. 336, & Man. ed. 5, 376, not Thouars, in which the 

 corolla is lobed and not plicate. 



, * Procumbent: peduncles very short and 1-flowered : capsule large : seed glabrous. 

 B. OValifolia. Sericeous-canescent : leaves ovate or oval, mostly subcordate, an inch 



long: style 2-cleft above the middle: capsule globose, half inch in diameter, about the 



length of the broadly ovate sepals, by abortion 1-seeded. Evolvulus ? oualifolius, Torr. Bot. 



Mex. Bound. 150. S. W. borders of Texas, on the Rio Grande (the Mexican side) below 



San Carlos, Parr//. Corolla not seen. 



* * Procumbent slender perennials : peduncles slender and elongated, 1-5-flowered : flowers small : 

 corolla almost campanulate: capsule small. Sty/.isma, Kaf., &c. 



B. humistrata. Sparsely pubescent or glabrate : leaves from elliptical and subcordate 

 to narrowly linear (an inch or two long), mucronate, and the broader emarginate : peduncles 

 1-7-flowered : bracts shorter than the pedicels : sepals glabrous or almost so, oblong-ovate, 

 acuminate: corolla white, half inch long: filaments hairy: styles united at base. Con- 

 volvulus humistratus, Walt. Car. 94. C. patens, Desr. in Lam. Diet. iii. 547. C. trichosnnthes, 

 Michx. Fl. i. 137, partly. C. Sherardi, Pursh. Fl. ii. 730? C. tenellus, Lam. 111. i. 459 ; 

 Ell. Sk. i. 250. Ecolvulus ? Sherardi, Choisy. Stylisma erolmlmdes, Choisy, 1. c., in part. 

 S. humistrata, Chapm. Fl. 346. Bonamia humistrata, Gray, Man. ed. 5, 376. Dry pine bar- 

 rens, Virginia to Louisiana. 



B. aquatica. Soft-pubescent or cinereous-tomentulose : leaves from elliptical to subcor- 

 date-lanceolate, very obtuse, seldom over an inch long : peduncles 1-3-flowered : sepals 

 strongly sericeous-pubescent, acute or acuminate: corolla rose-purple: filaments glabrous: 

 styles distinct nearly to base. Conrolrulns agnations, Walt. 1. c. ; Ell. 1. c. C. trirhosanthcs, 

 Michx. 1. c., partly. C. erianthus, Willd. in Spreng. Syst. i. 610. Stylisnm aquatica, Chapm. 

 1. c. Bonamia aquatica, Gray, 1. c. Wet pine barrens and margin of ponds, North Carolina 

 to Texas. 



B. Pickeringii. Pubescent, or the leaves glabrate : these from narrowly spatulate- 

 linear with acute and subsessile base to filiform-linear : peduncles seldom surpassing the 

 leaves, 1-3-flowered : bracts foliaceous and exceeding the flowers : sepals villous-sericeous, 

 ovate, obtuse, half the length of the ovate-conoidal capsule : corolla white, a third of 



