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; 
4 
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: 
- TRAUTVETTERIA. RANUNCULACEZ. 13 
_. BATRACHIUM. 
oid: Petals none. Pistils numerous; capitate, becoming inflated, 
4-angled membranaceous achenes. " 
T.: grandis Nutt. in T. & G. Fl. i, 37. Stem slender, 1-3 feet high: 
leaves few, thin, radical long-petioled, cauline short-petioled, all deeply 5- 
7-lobed with irregularly laciniate-toothed, acuminate lobes; flowers white: 
achenes a little more than a line long, broadly gibbous at base, rather abr- 
uptly beaked by the slender revolute meee Along streams in the Cascade 
ountains from California to Brit. Colurhbia. . 
, 6 BATRACHIUM §.F. Gray Brit. Pl. ii, 720. 
Aquatic herbs with the submersed leaves if any finely dissected 
‘into capillary divisions. Sépals 5, plain. Petals white with yel- 
low base, and a naked nectariferous spot on the claw of each. A- 
chenes transversely wrinkled on the sides. Peduncles solitary, 
opposite the leaves. 
B. aquatile Du Mortier Bull. Bot. Soc. Belg. ii, 207. Ranunculus aqu- 
atilis L, Glabrous: stems 6-20 inches long: floating leaves round-reniform, 
5-9 lines in diameter, 3-5-lobed. the lobes coarsely crenate-toothed: pedun- 
cles thicker than the petioles, 8-10 lines long, spreading or recurved in fruit: 
sepals deciduous: flowers white, 5-10 lines in diameter: style subulate, 
not longer than the ovary, introrsely stigmatic: receptacle hairy: achenes 
reticulated, short-beaked. In ponds and shallow streams,. California to 
Alaska, Europe and Asia, 
B. trichophyllum Bosch Prodr. Fl; Bat..5.-Ranunculus aquatilis var. 
trichophyllus Gray. Annual: stems coarsely filiform, 2-20 inches long: 
leaves all sabmersed, round-reniform in outline, cut into numerous capillary 
segments which are 4-10 lines long, short-petioled: peduncles 1-2 inches 
long, longer than the petioles: flowers 3-5 lines in diameter: style subulate, 
shorter than the ovary introrsely stigmatic: receptacle hairy; achenes 
several, in.a close globular head, glabrous obliquely oblong. In ponds and 
ditches: Oregon and Washington and across the continent. ei 
B. Lobbii. Ranunculiis Lobbit Gray. -Glabrous annual: stems 6-12 inch- 
es long: leaves commonly all floating, 3-9 lines wide, truncate or cordate 
at base, deeply 3-lobed, middle lobe usually elliptical and entire, the later- 
al ones usually..oblong and. with a broad. notch in the apex; submersed 
_ leaves none or rudimentary: peduncles opposite the upper leaves, thicker 
than the petioles 6-8 lines long: sepals a line long, persistent: petals 2 lines 
long, obovate-oblong: stamens 5-9: style long and filiform, with a small 
terminal stigma: receptacle glabrous: achenes 4-6, finely rugose, obovate, 
about a line long, embraced by the persistent calyx. In pools that go 
dry in summer, Oregon and California. 
7 RANUNCULUS Tourn. Inst. 285. L. Gen. n. 699. 
Herbs with alternate, entire or variously lobed leaves, and sol- 
itary or scattered flowers. Sepals 5, plain, commonly colored 
and reflexed. Petals 1-15, usually broad and conspicuous, with a 
small pit or spot covered by a scale, on the claw inside. Achenes 
usually numerous, in a globose to oblong head, usually flattened, 
and beaked with the persistent style, not transversely rugose on 
the sides. Ovule ascending. PEER 
§ 1 Hatopes Gray Proc. Am. Acad. xxi, 366. Mature carpels 
thin-walled aud utricular, compressed, striate with several simple 
or sparingly branched nerves. Petals yellow with a nectariferous 
scale near the base, deciduous with the sepals. 
