CONVOLVULACEAE 



959 



2. Breweria angustifolia Nash. Foliage more or less densely pubescent. Stems 

 much branched at the base, the branches trailing or reclining, 6-10 dm. long, sparingly 

 branched above : leaf -blades narrowly linear, 2.5-7 cm. long, often glabrate, acute, entire, 

 sessile or short-petioled : peduncles slender, about as long as the blades or shorter : sepals 

 glabrous or nearly so, oblong-lanceolate to elliptic, 7-10 mm. long, ciliate, acute to acumi- 

 nate, with more or less spreading tips : corolla white, about 2 cm. broad : capsules oval 

 or oblong-oval, 6-8 mm. long, bearded at the apex. 



In dry soil, peninsular Florida. 



3. Breweria humistrata (Walt.) A. Gray. Foliage villous-hirsute, or glabrate. 

 Stems often branching at the base ; branches trailing or climbing, 3-15 dm. long, some- 

 times sparingly branched : leaf -blades oblong or nearly so, 2-7 cm. long, apiculate, entire, 

 truncate or cordate at the base ; petioles 2-8 mm. long : peduncles very slender, 3-8 cm. 

 long : sepals glabrous or nearly so, oblong or oblong-lanceolate, 5-7 mm. long, acute or 

 acuminate : corolla white or pinkish, fully 2 cm. broad : capsules 4-5 mm. long. 



In sandy soil, Virginia to Florida and Louisiana. 



4. Breweria trichosanthes (Michx. ) Small. Foliage iinely pubescent. Stems 

 branched at the base ; branches prostrate or reclining, slender : leaf-blades oblong-linear, 

 1-4 cm. long, apiculate or mucronate, entire, often somewhat viscid, narrowed into short 

 petioles : peduncles as long as the leaves or longer : sepals strigillose, glabrate, oblong or 

 nearly so, 6-8 mm. long, more or less acuminate : corolla white, 1.5-2 cm. broad : cap- 

 sules about 5 mm. long, bearded at the apex. [Convolvulus trichosanthes Michx.] 



In sandy soil, North Carolina to Florida and Alabama. 



5. Breweria villosa Nash. Foliage villous-tomentulose. Stems usually branched at 

 the base; branches trailing, 3-14 dm. long, branched: leaf -blades oblong or linear, 2.5-7 

 <?m. long, apiculate, entire, rather abruptly narrowed or subcordate at the base ; petioles 

 2-8 mm. long : peduncles as long as the leaves or surpassing them : sepals villous-tomen- 

 tulose, oblong to ovate-lanceolate, 8-11 mm. long, acuminate : corolla white, 2.5-3 cm. 

 broad : capsules ovoid or globose-ovoid, 6-7 mm. long, closely pubescent. 



In dry sand, peninsular Florida. 



6. Breweria aquatica (Walt.) A. Gray. Foliage softly pubescent, or tomentulose. 

 Stems branched at the base ; branches trailing or rarely climbing, 5-12 dm. long, commonly 

 branched : leaf -blades oblong to narrowly lanceolate, 1-2.5 cm. long, apiculate, entire, 

 prominently nerved beneath, obtuse or cordate at the base : peduncles as long as the leaves 

 or longer : sepals silky -tomentose, acuminate, 5-6 mm. long : corolla rose-purple, fully 

 1.5 cm. broad: filaments glabrous: capsules 8-9 mm. long, pubescent, at least near the 

 top. 



In pine lands, Virginia to Florida and Texas. 



7. Breweria Pickering!! (M. A. Curtis) A. Gray. Foliage more or less densely 

 pubescent. Stems commonly branched at the base ; branches prostrate or reclining, with 

 many short spreading branchlets : leaf-blades linear-spatulate to narrowly linear, 2-6 cm. 

 long, acute, entire, narrowed into short petioles or nearly sessile : peduncles shorter than 

 the leaves or longer : bracts linear, surpassing the calyxes : sepals lanuginose, oval or ellip- 

 tic-oval, 4-5 mm. long : corolla white, 1-1.5 cm. broad : capsules ovoid-conic, 6-8 ram. 

 long, pubescent. 



In pine lands, New Jersey and Illinois, south to Florida and Texas. 



2. CRESSA L. 



Perennial shrubby plants, with sparingly or diffusely branched stems. Leaves alter- 

 nate : blades small or reduced to scales. Flowers solitary in the upper axils. Calyx ses- 

 sile or short-pedicelled : sepals nearly equal and distinct, imbricated, unchanged at 

 maturity. Corolla funnelform, persistent : lobes 5, about as long as the tube. Stamens 

 5, exserted : filaments filiform. Ovary more or less perfectly 2-celled. Styles distinct. 

 Ovules 2 in each cavity. Capsules little longer than thick, 2-4-valved. Seeds smooth 

 and shining, often solitary. 



Leaves not scale-like, numerous : filaments glabrous : corolla-lobes lanceolate. 

 Leaves reduced to a few scales : filaments pubescent below: corolla-lobes ovate. 



1. C. Trurillensis. 



2. C. aphyUa. 



1. Cressa Truxille"iisis H. B. K. Foliage silky. Stems much branched at the base; 

 branches copiously leafy, spreading or prostrate, 5-25 cm. long : leaves numerous ; blades 

 elliptic, oblong or elliptic-lanceolate, 3-9 mm. long, acute, entire, sessile or nearly so : 

 pedicels much shorter than the leaves : sepals longer than the pedicels, oblong to oval or 

 slightly broadest above the middle, 4-5 mm. long, obtuse : corolla white ; tube about as 



