C UO W.FOOT FA.M 1 L V. 30 



§ 1. Aquatic; the leaves all or niastli/ iimhr u-ater, and repeatedly dis- 

 serted into manii capillary divisions; jloweriny all summer. 

 * Petals white, or onhj the daw yellow. 

 R. circinatus. Silitli. Stikf*W.\tku Ckowfoot. Leaves sessile, stiff, 

 and riuid eii.moii to koep their sliape (spreading in a circular outline) 

 when drawn out of water. Rarer than the next. 



R. aquatilis. var. trichophyllus, CJray. White W. Capillary leaves 

 petioled, collapsing into a tut't wlien drawn out of the water ; petals small, 

 white, or yellow only at the base, where they bear a spot or little pit, but 

 no scale ; akencs wrinkled cro.sswise. Conunon. 

 * * Petals bright yellow. 

 R. multifidus, Piirsh. Yellow W. Leaves under water, much like 

 those of the White Water Crowfoots, or rather larger ; but the bright 

 yellow petals I' long, with a little scale at the base. 



§ 2. Terrestrial, many in wet places, hut naturally growing with the foliage 

 out of water ; petals with a little scale at the base, yelloxo in all the wild 



^ ^^' * Akenes striate, or ribbed down the sides. (I) 



R. Cymbal^ria, I'uish. Sk.a. sidic Crowfoot. A little plant of sandy 

 shores of the sea and Great Lakes, etc., smooth, with naked flowering 

 stems 2'-6' high, and long runners ; leaves rounded and kidney-shaped, 

 coarsely crenate ; flowers small in summer. 



* * Akenes not prickly nor bristly nor striate on the sides. 11 



■^ SpEARwouTs, growing in very wet plaees, with entire or merely toothed 



leaves, all, or all but the lowest, lanceolate or linear ; flowers all shimmer. 



++ Pistils flattened, pointed, or beaked. 



R. ambigens, Wats. Water Plantain Speakwort. Stems ascend- 

 ing, l'^-2'- liigli ; leaves lanceolate, or the lowest oblong ; flower fully \' 

 in dianu'tcr ; akenes beaked with a straight and slender style. Common. 



R. Flammula, Linn. Smaller Speakwort. Smaller than the last, 

 and akenes short-pointed ; rare N., but very connnon along borders of 

 ponds and rivers is the 



Var. rdptans, Meyer, or Creeping S., with slender stems creeping a few 

 inches in length ; leaves linear or spatulate, seldom 1' long ; flower only \' 



^°* • ++ ++ Pistils globular, pointless. Stems not rooting. 



R. oblongif61iu3. KIl. Diffusely branched above and many-flowered ; 

 leaves serrate <ir denticulate; lower ovate or oblong, upper linear. 111., 

 Mo., and So. States. 



R. pusillus, Foir. Differs from the preceding chiefly in the broader 

 entire leaves ; the lower round, ovate, or h.eart-shaped, upper oblong or 

 lanceolate. N. Y. and S. along the coast. 



-1- H- Crowfoots in wet or moi.'<t places, with all or at least the upper leaves 

 S-parted or divided. 

 ++ Bool-leaves rditndish, crenate, or toothed, but not lobed or cleft. 

 R. rhoniboideus, (Joldie. Hairy, 3'-8' hiuh ; petals large, deep yellow. 

 I'niirios, Mich, to N. 111., Minn, and W. 



R. abortivus. Linn. Very smooth and slender (rarely pubescent = 

 var. micranthus), (3'-2° high; petals shorter than sepals, pale yellow. 

 Very common in shady moist places in spring. 



■>-*■ ■«• Boot-leaves variously lobed, cleft, or parted. 

 = Pistils in oblong or cylindrical clusters. 

 R. affinis, W. Br. Low or slender, L^ high or less ; root-leaves pedately 

 manv-ck'ti ; styles recurved. Iowa, N., and W. 



