o 



2 The Ottawa Naturalist. [April 



FIVE NEW RANUNCULI. 

 By Edw. L. Greene. 



R. hirtipes. About a foot high, the ascending- stems and 

 long petioled leaves very hirsute with long white and shining 

 spreading hairs, this indument extending copiously even to the 

 petiolules of the rather ample ternate or quinate leaves, but not 

 to the flowering branches and peduncles, these almost glabrous : 

 leaves about 3 inches long, the leaflets 3-cleft and rather much 

 incised : flowers very small for the plant, the round-obovate petals 

 not more than 2.V lines long; sepals small, broadly ovate, obtuse, 

 hirsute, but mostly with broad thin petaloid margins : achenes 

 rather large, forming a large subglobose head, their beaks short, 

 not much curved. 



Obtained in woods near Sandwich, Ontario, 1; June, 1901, by 

 Mr. John Macoun, the specimens being labelled by him as repre- 

 senting R. hispidus, Michx. and bearing the Canad. Geol. Survey 

 number 33,582 ; but this is a plant very diff^erent from true R. 

 hispidus, the foliage being much more dissected, the pubescence 

 more copious and dense, the flowers altogether small and incon- 

 spicuous, in comparison. 



R. cardiopetalus. Low and slender, 4 to 8 inches high, 

 with something of the habit and foliage of a small R. hispidus 

 yet in no degree hispid, hirsute, or even villous, but finely appressed- 

 pubescent throughout, thinly so on the older parts, but the half- 

 developed later leaves appearing silky canescent : lowest leaves a 

 half-inch long, truncate at base, 3-cleft to the middle and the seg- 

 ments crenately 3-lobed, the later ones twice or thrice as large, 

 deeply cut into 3 crenate and trifid segments : peduncles i or 2, 

 in flower little exceeding the leaves ; sepals ovate-lanceolate, 

 acute, strigose-hairy corolla nearly one inch broad, the 5 petals 

 narrowly obcordate : fruit; not seen. 



At the Whirlpool Rapids, Niagara, Ont., 21 May, igoi, John 

 Macoun (n. 33,581). As to habit, this plant lies between R. 

 hispidus and R. fascicularis ; being like the latter in size, and like 

 the former as to its feA^ and slender roots. Its pubescence is not 

 that of either of those ; while the remarkably narrow sepals, along 



