GOURD FAMILY 555 



Tax. note. — Echinoeystis horrida is nearly related to E. macrocarpa but the fruits differ in 

 size and shape. The seeds also seem to differ: in E. horrida they are less cylindric or more 

 slender, and surrounded by a slight raised margin or ridge of the same color as the body of the 

 seed ; in E. macrocarpa the seed is surrounded by a very shallow groove which is darker in color 

 than the body of the seed. The flowers differ from those of E. fabacea: the corolla-lobes are 

 plane in E. horrida, their margins are revolute in E. fabacea. 



Locs. — Columbia, A. L. Grant 628; Table Mt., Jamestown, Tracy 5699; Mariposa Co. foot- 

 hills ; "Watson Spr., North Fork Kaweah Eiver, Jepson 587. 



Eefs. — EcHiNOCYSTis HORRIDA Congd. Erythea 7:184 (1900), based on spms. from Whit- 

 lock's and Patterson's, Sierra Nevada foothills in Mariposa Co., Congdon; Jepson, Man. 662, fig. 

 649 (1925). 



4. E. oregana Cogn. Hill Man-root. Steins 4 to 25 feet long, often climbing 

 over trees and shrubs, mostly smooth ; leaf -blades muriculate-scabrous, especially 

 on the upper surface, or almost smooth, reniform or round-cordate, 3 to 10 inches 

 wide, shallowly or deeply 5 to 7-lobed; staminate racemes 6 to 10 inches long, the 

 pedicels (3 or) 6 to 11 lines long; corolla 6 to 7 lines broad, clear white; pistillate 

 flowers with abortive stamens (staminodia), the pedicels 3 to 6 lines long, or in 

 fruit to 1% inches long; ovary ovate, 2 or 3-celled; ovules 1 to 4 in each cell, at- 

 tached to the outer side; fruit ovate, 2 to 3^/2 inches long, somewhat attenuate at 

 each end, often markedly beaked at apex, nearly smooth or sparsely covered with 

 short weak spines; spines 2 to 3 lines long, glabrous or puberulent; seeds 6, hori- 

 zontally placed, nearly circular, markedly flattened, 10 to 11 lines long, 3 to 4 

 lines thick. 



Wooded canon sides, 10 to 800 feet : Santa Clara Co. to Humboldt Co. North 

 to Oregon. Often climbing over trees and shrubs. Apr. 



Locs.— Los Gatos foothills, Seller 7262 ; Black Mt., Santa Clara Co., Elmer 4733 ; Millbrae, 

 San Mateo Co., E. A. Walker 1681 ; Crystal Springs Lake, San Mateo Co., C. F. Baher 450 ; Bald 

 Peak, Berkeley Hills, Tracy 669 ; Mt. Tamalpais, Jepson 14,132 ; Caux's Cabin, w. of St. Helena, 

 Jepson 14,134; Franz Valley, e. Sonoma Co., Jepson 14,130; Ukiah, Jepson 14,128; betw. De- 

 Haven and Ft. Bragg, Jepson 14,136 ; Rockport, Mendocino Co., Jepson 2220 ; Cotoneva Creek, 

 Mendocino Co., Jepson 2219; White Thorn, s. Humboldt Co., Jepson 2207; Dyerville, Humboldt 

 Co., Jepson 16,478; Eureka, Tracy 5077; Blue Lake, n. Humboldt Co., Jepson 1931; GObert 

 Creek, Del Norte Co., Jepson 9359. A plant from the Santa Inez Mts. (T. Brandegee) seems to 

 belong here, save that the seeds are 5 to 6 lines thick. 



Refs.— ECHINOCYSTIS OREGANA Cogn. Mem. Cour. Acad. Belg. 28:87 (1878) ; Jepson, Man. 

 662 (1925). Sicyos oreganus T. & G. Fl. 1 :542 (1840), type loe. Columbia River, Scouler, Doug- 

 las, Tolmie. Micrampelis oregana Greene, Pitt. 2 :129 (1890). Marah muricatus Kell. Proc. Cal. 

 Acad. 1:38 (1854), type loc. Mission Dolores hills, San Francisco, Kellogg. Megarrhisa marah 

 Wats. Proc. Am. Acad. 11:138 (1876), a renaming of Marah muricatus Kell. E. marah Cogn.; 

 DC. Monog. Phan. 3:817 (1881); Jepson, Fl. W. Mid. Cal. 320 (1901), ed. 2, 270 (1911). 

 Micrampelis marah Greene, Pitt. 2:129 (1890). 



5. E. muricatus Kell. Taw Man-root. Stems slender, not succulent, 4 to 8 

 feet long; herbage glaucous, especially on the under side of the leaves, smooth or 

 only slightly scabrous, glabrous or nearly so; leaf -blades orbicular-cordate or 

 broadly reniform, 2 to 4^2 inches broad, rather broader than long, deeply 5-parted, 

 the lobes broader above and sinuately 3-lobed; staminate racemes slender, often 

 few-flowered, the flowers small (11/2 to 21/2 lines in diameter), white; pistillate 

 flowers 3 to 5 lines broad, without abortive stamens, on slender pedicels 1 to 2 

 inches long; ovary smooth or somewhat spiny, the spines much dilated below 

 the middle; fruit nearly globose, 1 to 1^4 inches in diameter, sparsely covered with 

 weak glabrous prickles l^/^ to 214 lines long or somewhat naked toward the sum- 

 mit, 2 to 4-celled, 2 to 6-seeded; seeds subglobose, 7 to 9 lines long, 6 to 7 lines broad. 



Canon bottoms and hilltops, 900 to 2500 feet : Sierra Nevada foothills from 

 Butte Co. to Calaveras Co. ; Vaca Mts. Mar. 



Locs. — Sierra Nevada foothills: Oroville (8 mi. n.), Eeller 11,328; Auburn, Bolander 4533; 

 Jackson, Hansen 97; Angels Camp (Bot. Cal. 1:242). Vaca Mts.: Weldon Canon, Jepson 2188; 

 Collins Camp, Jepson 14,135. While these latter are the only known Coast Range stations, the 

 species will almost inevitably be found in the northward continuation of the inner Coast Range. 



Refs.— ECHINOCYSTIS MURICATUS Kell. Proc. Cal. Acad. 1:57 (1855), type loc. Placerville; 



