30 HYPERICACE^. (ST. JOHn's-WORT FAMILY.) 



1. C. Menziesii, Hook. Smooth, branching from the base, the stems ascending; 

 leaves linear to oblanceolate, 1 to 3 inches long, the lower on slender petioles; sepals 

 keeled, the calyx 4-angled in the bud; petals broadly obovate, red to purple, 2 to 6 lines 

 long. One of the most abundant of open ground early flowers. 



^ 2. CLAYTONIA, L. 



Petals 5, equal. Stamens 5. Style 3-cleft. Capsule and seeds as in Calandrinia. 

 Radical leaves numerous; cauline perfoliate, or a pair, 



1. C. perfoliata, Donn. Stems 2 to 12 inches high; radical leaves long-petioled, 

 broadly rhomboidal, or deltoid, or deltoid-cordate, | to 3 inches broad, obtuse; the cauline 

 pair usually united to form an almost orbicular perfoliate leaf, concave above; the lax 

 raceme of small pinkish flowers nearly sessile in the leaf-cup. 



Var. parvifloia, Torr. Radical leaves linear, or linear-spatulate. 



Var. spathulata, Torr. Radical leaves linear; the cauline pair distinct or partly 

 united on one side, ovate to lanceolate. Low and slender. 



Yar. exigua, Torr. Low, radical leaves narrowly linear or filiform; the cauline 

 distinct, linear. 



2. C. Siberica, L. Stems 6 to 15 inches high; radical leaves lanceolate to rombic- 

 ovate or nearly orbicular, long-petioled; the cauline pair ovate or varying from lanceolate 

 to spatulate-obovate, sessile, distinct; raceme loose; the rose-colored or white petals 2 to 

 4 lines long. 



3. LEWISIA, Pursh. 



Petals 8 to 16, large and showy, rose-colored. Stamens numerous (40 or more). Style 

 3 to 8-parted nearly to the base. Low acaulescent fleshy perennials, with fusiform roots, 

 and short 1 -flowered scapes. 



1. L. rediviva, Pursh. Leaves densely clustered, linear-oblong, subterete, 1 or 2 

 inches long, smooth and glaucous; scape jointed in the middle, bearing on the joint 5 to 

 7 subulate verticillate bracts; petals sometimes white, 8 to 16 lines long. 



Order 12. HYPERICACEiE. 



Herbs or shrubs, with opposite entire punctate leaves, no stipules and perfect flowers 

 with 4 or 5 petals and numerous stamens, the fruit a septicidal many-seeded capsule. 

 Calyx of 4 or 5 persistent sepals. Filaments mostly in 3 sets. Styles 2 to 5, usually 

 distinct. 



1. HYPERICUM, L. St. John's-wort. 



Sepals and petals 5. The numerous stamens in three bundles. Ovary 1 to 3-celled, 

 the ovules growing on the parietal placentae. Flowers cymose, yellow. 



