542 



RANUNCULACEAE 



17. R. orthorhynchus Hook. Stems leafy, ascending or erect, % to l 1 /^ 

 feet high, these and the basal leaves from a large cluster of stout-fibrous or 

 slender-fusiform perennial roots; petioles and stems hirsute or villous with 

 spreading hairs; leaves pinnately 5-foliolate, the 3 upper leaflets often approxi- 

 mate ; leaflets incisely cleft or toothed, or 3-parted, especially the terminal one, 

 % to l l /2 inches long ; flowers yellow, 6 to 9 lines broad ; petals 5 ; achene glabrous, 

 thickish, 2 lines long, with a broad ventral channel and weak dorsal keel, the 

 subulate upright beak quite as long as the body. 



Wet meadows, middle altitudes 

 (3600 to 5600 feet) in the Sierra 

 Nevada, from Mariposa Co. north to 

 Modoc Co., thence west to Siskiyou 

 Co. Far north to British Columbia. 



Loes. Hog Ranch Road, Yosemite Park, 

 Hall 8903; Yosemite Valley, Congdon; 

 Holtzel Mdw., Mariposa Co., Congdon; Con- 

 fidence, Tuolumne Co., Jepson 7705 (leaflets 

 mostly 3); Belle Mdw., Tuolumne Co., Jep- 

 son 6483; Placer Co., Hardy; Bear Valley, 

 Nevada Co., Jepson; Hot Springs Valley, 

 Lassen Peak, Jepson 4087; Morgan, e. 

 Tehama Co., Hall & Baboock 4378; Bear 

 Flat, ne. Shasta Co., Hall $ Babcock 4157; 

 Modoc Co., M. S. Baker; Sisson, Hall $ 

 Babcock 4066. 



Var. hallii Jepson n. var. Leaflets of 

 basal leaves broader than long, with mostly 

 shallow lobes and obtuse teeth. (Foliorum 

 inf eriorum f oliolata latiora quam longa, lobis 

 vulgo non profunde et dentibus vulgo ob- 

 tusis.) Pine Ridge, Fresno Co., Hall $ 

 Chandler 236 (type). The achenes are 

 rather sharply margined, these margins running out onto the stout beak as sharp salient ridges. 

 The leaflets are suggestive of those of Apium graveolens. 



Var. platyphyllus Gray. Stems very stout, (% or) 1% to 3^ feet high, from a cluster 

 of slender fusiform roots; herbage brownish-hirsute or pilose, the hairs often retrorse and 

 often dense on the petioles, or nearly glabrous throughout; leaves 3-foliolate (or the cauline 

 ternately divided), the basal long-petioled ; leaflets 1 to 2 (or 4) inches long, mostly broad, 

 3-parted or laciniately or sharply cleft and toothed, or with all or, more commonly, only the 

 terminal leaflet replaced by 3 leaflets; lateral leaflets sessile or short-petiolulate, the terminal 

 one long-petiolulate ; flowers % to l 1 /^ inches broad; petals 5 to 8, round-obovate to broadly 

 oblong, deep rich glistening yellow; aehenes margined. Swamps and ditches: North Coast 

 Ranges, mostly near the coast. North to Washington. Mar. -May. 



Locs. Berkeley, Greene; Millwood, Marin Co., Eastwood; Pt. Reyes, Davy 6723; Calistoga, 

 Jepson 9176; Mendocino Co. (Sherwood Valley, Davy 5122, Rowe's Sta., Cliandler 1054, Round 

 Valley, Westerman) ; Humboldt Co. (Arcata, Chandler 1110, Pilot Creek, Chesnut $ Drew, 

 Elk River Valley, Tracy 2574). 



Refs. RANUNCULUS ORTHORHYNCHUS Hook. Fl. Bor. Am. 1:21, t. 9 (1829), type loc. 

 Northwest America, Douglas. Var. HALLII Jepson. Var. PLATYPHYLLUS Gray, Proc. Am, Acad. 

 21:377 (1886), based on spms. from the Great Basin region to the Pacific Coast; K. Brandegee, 

 Zoe 4:83 (1893). R. platyphyllus Nelson, Bot. Gaz. 42:52 (1906) ; Piper, Contrib. U. S. Nat. 

 Herb. 11:276 (1906). R. macranthus Brew. & Wats. Bot, Cal. 1:8 (1876), not Scheele. 

 . maximum Greene, Bull. Torr. Club, 14:118 (1887), based on San Francisco Bay region spms. 



18. R. marmorarius Jepson & Tracy n. sp. Stems ascending, 6 to 10 inches 

 high, from perennial roots; herbage sparsely hirsute; basal leaves 3-foliolate, 

 the leaflets cuneate-obovate, 3-cleft into narrow lobes, otherwise entire ; cauline 

 leaves deeply 3-parted, or 3-foliolate with lanceolate entire petiolulate leaflets, or 

 simple and lanceolate ; achenes with very slender beak as long as or longer than 

 the body. (Perennis; caules ascendentes, 6-10 poll, alti, sparse hirsuti; folia 

 basalia 3-f oliolata ; f oliola cuneato-obovata, 3-fida, lobis angustis, alioqui integris ; 



Fig. 108. RANUNCULUS BLOOMERI Wats, a, 

 flowering branchlet; b, blade of basal leaf. 

 X %. 



