78 RANUNCULACEAE. [Vor. IL. 
15. Ranunculus abortivus I. Kidney- 
leaved Crowfoot. (Fig. 1609.) 
Ranunculus abortivus l,. Sp. Pl. 551. 1753. 
Glabrous, or but sparingly pubescent, 6/—2° 
high, branched. Basal leaves long-petioled, 
bright green, thick, crenate or sometimes lobed, 
broadly ovate, obtuse, and generally cordate or 
reniform, the cauline sessile or nearly so, di- 
vided into oblong or linear somewhat cuneate 
lobes; head of fruit globose, the receptacle 
short, pubescent; flowers yellow, 2’’-3’’ broad, 
the petals oblong, shorter than the reflexed 
calyx; achenes tipped with a minute curved 
beak. 
In woods and moist grounds, Labrador and 
Nova Scotia to Manitoba, south to Florida, Arkan- 
sas and Colorado, April-June. 
16. Ranunculus micranthus Nutt. 
Rock Crowfoot. (Fig. 1610.) 
Ranunculus micranthus Nutt.; T. & G. Fl. N. A. 1: 
18. 1838. 
Ranunculus abortivus var. micranthus A, Gray, 
Man. Ed. 5, 42. 1867. 
Similar to the preceding species but usually 
smaller, villous with spreading hairs, flowering 
when very young, 6-18’ tall. Leaves thin, dull 
green, the basal ones ovate or suborbicular, 3- 
lobed or crenate, narrowed, rounded or subcor- 
date at the base; segments of the upper leaves 
narrow, entire or sharply toothed; flowers yellow, 
about 3’’ broad; sepals narrowed into a short 
claw; petals oblong or oval, 2-3 times as long as 
wide; head of fruit rather longer than thick, the 
receptacle linear, glabrous or very nearly so. 
In rich woods, often on rocks, range apparently nearly that of R. abortivus. In New York it 
blooms somewhat earlier than that species. Roots tuberous. April-May. 
17. Ranunculus Alleghaniénsis Brit- 
ton. Mountain Crowfoot. (Fig. 1611.) 
Ranunculus Alleghaniensis Britton, Bull. Torr. 
Club, 22: 224. 1895. 
Similar in aspect to R. abortivus and R. mi- 
cranthus, glabrous, stem widely branched, 1° 
2° tall. Basal leaves reniform or suborbicular, 
6//-2’ wide, long-petioled, crenate or some of 
them lobed, the teeth and lobes subacute; stem 
leaves sessile or the lower petioled, divided 
» nearly or quite to the base into linear acute en- 
, tire toothed or cleft segments; flowers about 3/’ 
broad; petals oblong, not exceeding the calyx, 
yellow, glandular; head of fruit globose or glo- 
bose-oblong, 2’’ in diameter; achenes slightly 
compressed and margined, tipped with subulate 
hooked or recurved styles of about one-half their 
length. 
Mountains of Virginia and North Carolina to the 
Catskills, and eastern Massachusetts. April-May. 
