Genus i. 



MORNING-GLORY FAMILY. 



41 



i. Stylisma humistrata (Walt.) Chapm. 

 Southern Breweria. Fig. 3424. 



Convolvulus humistratus Walt. Fl. Car. 94. 1788. 

 Stylisma humistrata Chapm. Fl. S. States, 346. i860. 

 Bonamia humistrata A. Gray, Man. Ed. 5, 376. 1867. 

 Breweria humistrata A. Gray, Syn. Fl. 2: Part 1, 217. 1878. 



Pubescent or puberulent; stems slender, i-2 long, 

 simple, or with a few long branches. Leaves elliptic, 

 oblong-elliptic, or ovate-oblong, obtuse and mucronulate 

 or some of them emarginate at the apex, subcordate, 

 rounded or narrowed at the base, l'-i' wide, 1-2' long; 

 petioles 1" 3" long; peduncles slender, longer than the 

 leaves, i-~-flowered, minutely bracted at the summit ; 

 sepals glabrous or puberulent, oblong, acuminate, 2" 3" 

 long; corolla white, 6"-8" long; filaments pubescent; 



2 style 2-cleft; capsule ovoid, acute, glabrous, about as 



3 long as the calyx. 



In dry pine barrens, Virginia to Florida and Louisiana. 

 May-Aug. 



2. Stylisma aquatica (Walt.) Chapm. Water 

 Breweria. Fig. 3425. 



Convolvulus aquaticus Walt. Fl. Car. 94. 1788. 

 Stylisma aquatica Chapm. Fl. S. States, 346. i860. 

 Bonamia aquatica A. Gray, Man. Ed. 5, 376. 1867. 

 Breweria aquatica A. Gray, Syn. Fl. 2 : Part I, 217. 1878. 



Finely and densely silky-tomentose, branched, the branches 

 long and slender. Leaves oblong, elliptic or oblong-lanceo- 

 late, obtuse at both ends, mucronate or emarginate at the 

 apex, sometimes subcordate at the base, i'-li long, 2"-%" 

 wide; peduncles 1-3-flowered, longer than the leaves, mi- 

 nutely bracted at the summit; sepals densely silky-tomen- 

 tose, oblong, acute or acuminate, about 2" long; corolla 

 purple or pink, S"~7" long; filaments glabrous; style 

 2-parted nearly to the base. 



In wet soil, especially in pine barrens, Missouri to Texas, 

 east to North Carolina and Florida. May-Aug. 



3. Stylisma Pickeringii (M. A. Curtis) A. Gray. 



Fig. 3426. 



Convolvulus Pickerlngi, 

 Hist. 1 : 129. 1837. 



Pickering's Breweria. 



M. A. Curtis, Bost. Journ. Nat. 



Stylisma Pickeringii A. Gray, Man. Ed. 2, 335. 1856. 



Bonamia Pickeringii A. Gray, Man. Ed. 5, 376. 1867. 



Breweria Pickeringii A. Gray, Syn. Fl. 2 : Part 1,217. 1878. 



Etem pubescent or puberulent, very slender, simple 

 or branched, i-2 long. Leaves puberulent or glabrous, 

 narrowly linear, obtuse or acutish at the apex, narrowed 

 at the base, l'-2l' long, "-2" wide, the lowest sometimes 

 narrowly spatulate; petioles very short; peduncles slen- 

 der, about as long as the leaves, with 1 or 2 linear bracts 

 at the summit which are usually longer than the pedicels 

 and calyx ; sepals pubescent or hirsute, ovate to oval, 

 obtuse, about 2" long; corolla white, about 1' long; fila- 

 ments nearly glabrous ; style 2-cleft, above, exserted ; 

 capsule ovoid, acute, pubescent, longer than the calyx. 



In dry pine barrens. New Jersey to North Carolina ; 

 Illinois to Iowa, Louisiana and Texas. June-Aug. 



2. EVOLVULUS L. Sp. PI. Ed. 2, 391. 1762. 



Erect or diffuse branching, mostly silky-pubescent or pilose, annual or perennial herbs, 

 with small usually entire leaves, and axillary solitary, racemose or paniculate, small blue 

 pink or white flowers. Sepals nearly equal, acute or obtuse. Corolla funnelform, campanu- 

 late or rotate, the limb plaited, 5-angled or 5-lobed. Stamens included or exserted'; filaments 



