38 RANUNCULACE.E. Ranunculus. 



leaflets. — 7?. orihorkynchus. Hook. Fl. Bor.-Am. i. 21, t. 9; Torr. & Gray, Fl. i. 24; Walp. 

 Rep. i. 43 (misprinted ornilhorhi/nrhus) ; (Jray, 1. c. viii. 373. But not R. dichotomns, M09. & 

 Sesse, of Mexico, as supposed by Schlecht. Linnaea, vi. 579. — Wet ground, W. Oregon to 

 Brit. Columbia; first coll. by Douglas. Passes into the very marked 



Var. platyph^llus, Gray, 1. c. Rol)ust, 1 to 3 (according to Kellogg even over 5) 

 feet high: leaves with limb 2 to 4 inches long, and leaflets or segments 1 to 3 inches long, 

 from oblong or rhuniboidal to ovate, laciniately cleft and incised : petals varying from a 

 quarter to three fourths inch long: beak of akenes sometimes 2 lines long. — R. macranthus, 

 Wats. Bot. King Exp. 9 ; Brew. & Wats. Bot. Calif, i. 8, not Scheele. R. maximus, Greene, 

 Bull. Torr. Club, xiv. 118. — Wet soil, Wasatch Mountains, N. Utah, Watson, Jonex, and 

 N. Nevada, near Pyramid Lake, Lemmon, to Marin and Mendocino Co., Calif, Krllo;/if, 

 Bolander,^ in the largest forms.'^ Smaller and moderately broad-leaved, N. California, 

 Greene, Mrs. Austin; Klikitat Co., Washington, Suksdorf; nxountains of Idalio, Watson.^ 



b. Annuals or biennials, all bat one introduced from the Old World. 

 1. Akenes smooth and even, or at length with some scattered and very small papillae: 

 flowers moderately large and showy. 



R. pAkvclcs, L. a span to a foot high (variable in size in the manner of annuals), hirsute, 

 especially the lower part of the erect or ascending stems and petioles : radical leaves, some 

 3-parted, but most 3-foliolate, with at least middle leaflet petiolulate, all of roundish or 

 obovate and cuneate outline, and mostly cleft and incised or dentate in tlie way of R. repens : 

 petals much surpassing the reflexed calyx: akenes (a line long) orbicular, fiat, with a thin 

 sharp margin, tipped with a very short triangular-subulate beak, consisting of tlie whole 

 introrsely stigmatose style. — Mant. 79 ; Smith, Fl. Brit. 593. R. Sai-dous, Crantz, Stirp. 

 Anstr. if. 84 (ed. 2, i. 111). R. hirsiUus, Curt. Fl. Lond. ii. t. 40; Ait. Kew. ii. 268; Eng. 

 Bot. t. 1504; Reichenb. Ic. Fl. Germ. iii. t. 23. R. philonotis, Ehrh. Rpitr. ii. 145; Retz. 

 Obs. vi. 31 ; Fl. l-»an. ix. t. 14b9; probaljly not of Tursh. — Low ground, Savannah, Georgia, 

 Canbij ; the akenes aU smooth. Near Philadelphia, but only in baUast grounds, Martindale. 

 (Sparingly nat. from Eu.) 



2. Akenes hispidulous with hooked hairs and papillose-scabrous : flowers minute. 



R. hebecarpus, Hook. & Arn. Slender, sometimes exiguous, a span to a foot high, pa- 

 niculately branched, lax-hirsute : leaves of rounded outline, small, ternately or pedately 

 parted, or some divided into petiolulate simple or laciniately cleft leaflets : peduncles short : 

 petals a line or less long, pale yellow, not surpassing the sepals : akenes few in the loose 

 heads, obliquely orbicul.ar. flat, a line or less long, tipped with a sliort subulate curved beak. 

 — Bot. Beech. 316; Torr. Pacif. R. Rep. 62; Brew. & Wats. Bot. Calif, i. 8, with var. jmsil- 

 lus, mere depauperate plants. R. parvi floras, var., Torr. & Gray, Fl. i. 25, 659. — Open 

 ground, throughout W. California to Washington. (Lower Calif.) 

 3. Akenes muriculate or echinate. 



R. PARvrFL6Rns, L. Villous or hirsute, slender and low, diffuse : radical leaves orbicular in 

 outline, 3-5-parted or divided and the cuneate segments laciniate-lobed : inflorescence and 

 flowers nearly of the preceding : akenes rougher papillose-scabrous, not hairy, tipped with 

 very short beak. — Spec. ed. 2, i. 780; Eng. Bot. t. 120; Reichenb. Ic. Fl. Germ. iii. t. 22; 

 Torr. & Gray, 1. c., excl. var. R. trachyspermus. Ell. Sk. ii. 65. — Waste grounds near towns, 

 &c., Maryland to Florida, Texas, and Arkansas. (Nat. from Eu.) 



R. muricAtus, L. Glabrous or sparsely pubescent, rather stout and succulent, span to a foot 

 or so high : leaves mostly round-cordate or reniform, 3-5-cleft and coarsely crenate-dentate : 

 petals deep yellow, a quarter inch long, surpassing the calyx : akenes quarter inch long 

 besides the stout subulate curved beak, which is confluent with the strong and salient mar- 

 gins, the flat faces conspicuously tuberculate or echinuLe. -Spec. i. 555 ; Michx. Fl. i. 321 ; 

 Lam. lU. t. 498 ; Torr. & Gray, Fl. i. 24. — Wet soil near towns, Virginia to S. Carolina, 

 Louisiana, and California near San Francisco to S. Oregon. (Nat. from Ru.) 

 R. ARviNSis, L. of Europe, with linear-lobed leaves and coarse ecKnate akenes, has been 



detected in ballast grounds.* 



1 Sonoma Co., Calif., Congdmu 



2 Similar robust forms have been recently collected in Humb-jldt Co., Calif., Blankinship. 

 8 And in S. Brit. Cohimbia, Macoun. 



4 Tliis speries, according to Britton (Bull. Torr. Club, xix. 21[t), i-^ .spreading in New Jersey. 



