1902] Greene Five New Ranunculi. 33 



with broad distinctly obcordate petals must compel its recogrii- 

 tion as a good species. 



R. OCTOPETALUS. Perennial, of the size and the upright habit 

 of R. acris, but lower part of stem and the long' stout petioles 

 densely and coarsely hirsute : leaves ample, pinnately ternate, 

 the subsessile lateral leaflets cleft into 2, the long-stalked terminal 

 one into 3 slightly cuneiform or sometimes almost quadrate 

 segments, these incisely toothed above the middle ; the rather 

 loose panicle glabrous ; flowers small, the expanded corolla about 

 J inch broad ; petals commonly 8, sometimes 7 or 6, almost 

 linear-oblong, obtuse : achenes small for the group, moderately 

 compressed, sharply margined, tipped with a slender almost 

 straight but distinctly inflexed style, not numerous, forming a 

 small globose head. 



In marshes of Knox Co., Tennessee, 10 June, 1893, T. H. 

 Kearney ; the specimens labelled R. hisptdus, but surely very 

 erroneously. 



R. RUDis. Perennial, the several very thick stems (often ^ 

 inch in diameter) hollow, therefore weak and reclining, often 2 

 feet long, rather coarsely and loosely hirsute : leaves ternate, the 

 radical on long petioles, the 3 primary leaflets on nearly equal 

 stout petioles of an inch or less, each deeply cleft or parted into 

 3 broadly cuneate incisely lobed or toothed segments, glabrous 

 above, villous-hirsute beneath along the veins ; cauline leaves 

 similar but short-petioled, the uppermost simple and sessile, in- 

 cised like the segments of the lower : flowers small, numerous 

 and somewhat panicled near the ends of the branches ; sepals 

 oblong-lanceolate, obtuse, hairy, persistent even under the head 

 of full grown fruit : petals small, not even equalling the sepals, 

 round-obovate : achenes little compressed, turgid, smooth, the 

 ensiform beak about as long as the body, the whole forming a 

 large subglobose or almost ovate head. 



Discovered in a wet meadow in '* Devil's Garden," northern 

 California, (Plumas or Lassen County) June, 1895, by Mrs. R. 

 M. Austin. 



R. INTERTEXTUS. Stems many, slender, prostrate, interlaced, 

 forming close mats either floating in very shallow water, or terres- 



