1917] Fernald,—:New or critical Ranunculi 137 
Mountains, nor to the westward of them.” ! Hooker had three varie- 
ties of R. Flammula: a major which is the endemic American R. lazi- 
caulis (T. & G.) Darby; “8. intermedia; caule repente gracili, foliis 
anguste lanceolatis superioribus linearibus integerrimis”; and y fili- 
formis, which was typical R. reptans L. The two latter, vars. inter- 
medius and filiformis, he had from “gravelly banks of rivers from 
Canada to lat. 69°.” Thus it is clear that Hooker was merely separat- 
ing from the true slender-leaved R. reptans (his R. Flammula y fili- 
formis) a broader-leaved but repent slender plant of Canadian river 
banks, a plant scarcely separable from R. reptans, but somewhat 
broader-leaved than the typical form of the species. 
Similarly the name R. Flammula, var. unalaschcensis (Bess.) Ledeb. 
has been taken up for the western form of R. Flammula, but in the 
Gray Herbarium, where there are several sheets from the Aleutian 
Islands, there is none which is not clearly referable to R. reptans, 
either narrow- or broad-leaved. The only description of var. wnalasch- 
censis was in Flora Rossica and there is nothing in it to indicate that 
it is more than an extreme of R. reptans. Ledebour recognized true 
R. reptans with filiform or filiform-linear leaves as R. Flammula y 
and contrasted with it a var. “8. caule prostrato radicante, foliis 
latioribus integerrimis, rarius unidentalis” which included “ R. una- 
laschcensis, Besser in herb. Zeyheri.” ? This, judging from various 
specimens from Unalaska and the other Aleutian Islands, was, then, 
a form of R. reptans. This broad-leaved extreme of R. reptans is 
R. REPTANS, var. OVALIS (Bigel.) T. & G. Fl. N. A. i. 16 (1838). 
R. filiformis; var. B. ovalis Bigel. Fl. Bost. ed. 2, 224 (1824). R. 
unalaschcensis Bess. in Ledeb. Fl. Ross. i. 32, as syn. (1841). R. 
Flammula, var. unalaschcensis (Bess.) Ledeb. acc. to Regel, Bull. Soc. 
Nat. Mosc. xxxiv. pt. 2, 41 (1861). R. reptans, var. strigulosus Freyn,: 
Deutsche Bot. Monatschr. viii. 181 (1890). 
RANUNCULUS PYGMAEUS Wahlenb., var. petiolulatus, n. var., foliis 
radicalibus pedatim divisis, foliolis 3 petiolulatis rhomboideo-obovatis 
palmatis laciniis 3-5 oblongis vel valde divisis; capitulis fructiferis 
5-7.5 mm. longis. 
Radical leaves pedately divided; the 3 leaflets petiolulate, rhombic- 
obovate, palmate, with 3-5 oblong lobes or deeply divided: fruiting 
heads 5-7.5 mm. long.— QuEeBEc: damp mossy hollows in shade of 
amphibolite rocks, altitude 950-1000 m., Mt. Albert, Gaspé County, 
August 8 & 10, 1905, Collins & Fernald, no. 82 in large part (TYPE in 
Gray Herb.). 
1 Hook. Fl. Bor.-Am. i. 11 (1829). 
2 Ledeb. Fl. Ross, i. 32 (1842). 
