124 CIST ACE AE. 



sepals. Corolla of 5 convolute delicate petals. Androecium of 5 distinct 

 stamens. Gynoecium of 3 united carpels. Ovan- 1-celled, with 3 parietal 

 plancentae opposite the styles. Fruit a 3-valved capsule. 



1. PIRIQUETA Aubl. Herbs. Sepals slightly united. Stigmas 2-cleft. 



Stem, and branches, tomentose or hirsute. 



Stem hirsute as well as tomentose. 1. P. caroUniana. 



Stem merely tomentose. -■ P- tomcntosa. 



Stem, and branches, glabrous. 3. P. glabrcscens. 



1. P. caroliniana (Walt.) Urban. Plants fulvous-hirsute, 1-4 dm. tall: leaf- 

 blades obovate, oblong, cuneate, lanceolate, or rarely oval, 1-7 cm. long, repand 

 or crenate-serrate: corolla deep-yellow; capsules 5-7 mm. long. — Pinelands 

 and coastal sand-dunes. 



2. P. tomentosa H.B.K. Plants stellate-tomentose, 2-4 dm. tall: leaf -blades 

 oval, oblong, or rarely narrowly oblong-lanceolate, 1-4 cm. long, crenate-serrate: 

 corolla bright-yellow: capsules 5-6 mm. in diameter. — Pinelands. — F. K. 



3. P. glabrescens Small. Plants glabrous up to the inflorescence, 4-6 dm. 

 tall: leaf -blades narrowly linear, 1-5 cm. long, entire: corolla light-yellow: 

 capsules about 5 mm. long. — Everglades. 



Family 3. CISTACEAE. Rock-rose Family. 



Shrubs or partially Avoody plants. Leaves alternate or opposite: 

 blades simple. Flowers generally perfect. Calyx of 3-5 persistent sepals. 

 Corolla of 3-5 often fugacious petals, or wanting. Androecium of 6 or 

 more stamens. Gynoecium of usually 3 united carpels. Fruit a capsule. 



Corolla yellow: petals 5. fugaceous or wanting. 1. Ckocanthbmdm. 



Corolla not yellow ; petals 3, persistent. 2. Lechba. 



1. CROCANTHEMUM Spach. Erect plants. Flowers complete and 

 showy, or in some species both petaliferous and apetalous. Ovules pendulous. 

 Capsules of the petaliferous flowers larger than those of the apetalous ones. — 

 Frost-weed. 



1. C. corymbosmn (Michx.) Britton. Stems finely and densely canescent, 

 1.5-3 dm. high: leaf-blades oblong, or the lowest obovate, 2-2.5 cm. long, pale 

 beneath, dark-green above: corolla 16-20 mm. broad: capsules of the larger 

 flowers 4-6 mm. broad, many-seeded, those of the apetalous ones smaller and 

 few seeded. [Helianthemum corjmbosum Michx.] — Pinelands. 



2. LECHEA Kalm. Erect plants with very many leafy shoots at the base 

 in fall. Leaf-blades narrow, or those of the leaves on the shoots often broad 

 and short. Flowers complete, minute. Ovules erect. Capsules equal. — Pix- 



WEED. 



1. L. patula Leggett. Plants bushy, the stems usually divergently branched, 

 but the branches sometimes ascending: stem-leaves 4-9 mm. long; blades linear 

 or oblong, acute: inner sepals oblong, 1-1.4 mm. long: petals oblong-cuneate, 

 about 1 mm. long, notched at the apex: pods globose-oblong or oblong, 1-1.5 

 mm. long. — Pinelands. 



Order PASSIFLORALES. 

 Herbs, vines, or shrubby plants, or succulent tree-like plants with 

 milky sap. Leaves alternate: blades entire, toothed, or lobed. Flowers 



