DROSERACEAE 103 



DROSERACEAE. Sundew Family 



Perennial glandular herbs of bogs. Leaves in a basal rosette. Flowers hypog- 

 ynous, white. Ovary 1-eelled; styles 1 to 5; ovules numerous on parietal placentae. 

 Capsule 3-valved. — Genera 6, species 106, temperate and subtemperate regions of 

 all continents. 



Bibliog. — Darwin, Chas., Insectivorous plants (1-376), figs. 1-30, ed. 2, 1899). Diels, L., 

 Droseraceae (Engler, Pflzr. 4"=^: 136, figs. 1-40, map,— 1906). 



1. DROSERA L. Sundew 



Herbage brownish or reddish. Leaves long-petioled, the blade covered with 

 numerous stout glandular hairs. Flowers borne on a naked scape in a 1-sided 

 raceme. Calyx 5-parted, persistent. Petals 5, distinct or slightly united, hypogy- 

 nous. Stamens 5. Styles 2 to 5, usually 3, often 2-parted so as to appear twice as 

 many. — Species 90, all continents but most abundant in Australia. (Greek dro- 

 seris, dewy, the glands dew-like.) 



Biol. note. — The numerous glandular hairs occur on the margins aJid in the middle of the 

 leaves. When small animals become entangled by the glands, the hairs and the entire leaf close 

 over them, dissolving and absorbing all the digestible material. The leaf then slowly re-opens, 

 the rejected or indigestible matter dries and is blown away, and the organ is ready to repeat the 

 operation. 



Leaf -blades orbicular or broader than long 1. D. rotundifolia. 



Leaf -blades 4 to 8 times longer than broad 2. D. longifoUa. 



1. D. rotundifolia L. Common Sundew. Scapes 31^2 to 8 inches high; leaf- 

 blades spreading, suborbicular; petals only a little exceeding the sepals. 



Cold bogs or swamps : Sierra Nevada, 3600 to 8500 feet, from Tulare Co. to 

 Siskiyou Co., thence south (near the coast, 300 to 4000 feet) to Sonoma Co. North 

 America, Europe, Asia. July- Aug. 



Locs. — This species is, probably, of more frequent occurrence in the swampy meadows of the 

 Sierra Nevada than has been recorded. In the Giant Forest, Sequoia Park, it occurs in several 

 of the meadows but the conditions in the various meadows are somewhat different. Judge Walter 

 Fry assures us that the plants bloom every year in Oriole Mdw., but only once in two or three 

 years in Crescent Mdw. We cite other stations as follows: Huckleberry Mdw., Giant Forest, 

 Tulare Co., Newlon; Grouse Mdw., Middle Fork Kings Eiver, ace. F. W. Peirson; Frenchman 

 Mdw., Dorrington, Calaveras Co., Jepson 10,185; Kneeland's Mill, Nevada Co., Sonne; Cold- 

 stream, Placer Co., Sonne 107 ; Willow Lake, Plumas Co., R. M. Austin 369 ; Mineral, Tehama Co., 

 J. Grinnell; Bear Valley Mts., Modoc Co., Baher 555; Dead Horse Canon, Siskiyou Co., M. S. 

 Baker; Mt. Shasta (N. Am. Fauna 16:147) ; Christmas Prairie, Humboldt Co., Alma Bonstell; 

 Bald Mt., betw. High Prairie and Snow Camp, Humboldt Co., Tracy 4601; Humboldt Hill, Tracy 

 5084; Albion, Mendocino Co., Davy <f- Blasdale; Pitkin swamp, Graton, Sonoma Co., ace. M. S. 

 Baher. 



Eefs. — Drosera rotundifolia L. Sp. PI. 281 (1753), "Europe, Asia, America"; Jepson, Man. 

 449, fig. 441 (1925). 



2. D. longifolia L. Arctic Sundew. Scapes 3 to 6 inches high; leaf -blades 

 erect, obovate-spatulate; petals nearly twice as long as the sepals. 



Marshy spots or bogs in the mountains, 5000 to 6000 feet : Sierra Co. North to 

 British America. Europe, Asia. July. 



Loc— Sierra Co. (Bot. Cal. 1:213). 



Eefs.— Drosera longifolia L. Sp. PI. 282 (1753), type European; Jepson, Man. 449 (1925). 

 D. angJica Huds. Fl. Angl. ed. 2, 135 (1778). 



CRASSULACEAE. Stone-crop Family 



Ours glabrous succulent herbs. Leaves entire, without stipules. Flowers in 

 cymes or rarely solitary, small, regular, and usually perfect. Sepals, petals and pis- 

 tils of the same number (usually 5 in ours) , the stamens as many or twice as many. 

 Petals distinct or united at base into a short tube, usually persistent. Pistils placed 



