160 KEY AND FLORA 



stem leaves palmately divided. Involucel none. Flowers pink or 

 white, about 1 in. in diameter. Carpels strongly wrinkled. In dry 

 soil W. and S.W. 



2. C. digitata JSTutt. Fringed Poppy Mallow. Resembling 

 C. alcmoides. Flowers li-2 in. in diameter. Petals reddish-purple 

 to white, fringed. In dry soil S.W. 



3. C. involucrata Gray. Purple Poppy Mallow. Perennial. 

 Stems 1-2 ft. high, procumbent or ascending. Leaves round-heart- 

 shaped, palmately lobed or cut. Involucel 3-leaved. Peduncles long, 

 slender, and 1-flowered. Flowers reddish-purple, 1-2| in. in diameter. 

 Carpels with a wrinkled network. In dry soil W. and S.W. 



66. HyPERICACE.S;. St. John's-wort Familv 



Herbs, shrubs, or trees. Leaves opposite, often covered 

 with translucent or dark dots, entire or with glandular teeth, 

 without stipules. Flowers usually in terminal cymes. Sepals 

 5, rarely 4. Petals as many as the sepals, hypogynous. 

 Stamens usually many, more or less grouped in bundles ; 

 anthers versatile. Pod 1-celled, with 2-5 parietal placentae 

 and the same number of styles, or else 3-7-celled, split- 

 ting along the partitions. 



HYPERICUM L. 



Herbs, shrubs, or small trees. Leaves sessile, often dotted. 

 Flowers yellow, bisexual. 

 B. Fl. species 2 (^Sarothra). 



1. H. perforatum L. Common St. John's-wort. Perennial. Stem 

 erect, 1-3 ft. high, 2-r,idged, much branched. Leaves linear or oblong, 

 obtuse, with translucent veins and dots. Cymes grouped in corymbs, 

 many-flowered. Flowers 1 in. in diameter. Sepals acute. Petals 

 much longer than the sepals, oblique at the tip and irregularly 

 fringed. A common weed in meadows and pastures E. and N. 

 Naturalized from Europe. 



2. H. gentlanoides BSP. Orange Grass, Pinbweed. Low (4-9 

 in. high), slender annual, with erect, angled or almost winged, wiry 

 stem and branches. Leaves minute awl-shaped scales. Corolla about 

 \ in. in diameter, usually closing by or before midday. Sandy banks 

 and roadsides. 



