KANUNCULACE-ffi. (CROWFOOT FAMILY.) 41 



• 

 Var. terr68tris, which differs from the ordinary emersed forms by the 

 Stems ascending from the base and paniculately several-flowered at the summit, 

 where the leaves are reduced to oblong or linear bracts ; no immersed dissected 

 loaves. — Ann Arbor, Michigan, on muddy banks, Miss Clark. 

 ■*- h- Terrestrial but growing in very wet places, glabrous or nearly so : root peren- 

 nial : leaves all entire or barely toothed, all or else all but the lowest lanceolate or 

 linear; carpels forming a globular head. (Spearwort.) 



4. R. alismaefdlius, Geyer. (Water Plantain Spearwort.) Stems 

 hollow, ascending (1°- 2° high), often rooting from the lower joints; leaves 

 lanceolate or the lowest oblong, mostly denticulate (3' -5' long), contracted 

 into a margined petiole which expands into a membranaceous clasping base ; 

 petals 5-7, bright yellow, much longer than the calyx (3" -4" long) ; carpels 

 flattened, large, pointed icith a long and straight narrow subulate beak. — Common, 

 especially northward. June - Aug. — Intermediate in appearance between R. 

 Flammula and Lingua, and lias been confounded' with both, but most resembles 

 the latter. 



5. R. Flammula, L. (Smaller Spearwort.) Stem reclining or xAvvm^oV. 

 ascending, rooting below ; leaves lanceolate or linear, or the lowest oblong- ^A-. U , C> 

 lanceolate, entire or nearly so, mostly petioled (l'-2' long) ; petals 5-7, much 



longer than the calyx, bright yellow ; carpels jlattish but turgid, mucronate with 

 a short abrupt point. — Shore of L. Ontario and northward: rare, and only a 

 small form (var. intermedius) met with in this country, a span high, with 

 flowers 3" in diameter, passing into 



Var. reptans. (Creeping S.) Small, slender, the filiform creeping stems 

 rooting at all the joints (3'- 6' long; leaves linear, spatulate, or oblong (i'-V 

 long). — Gravelly or sandy shores and inundated banks; very common north- 

 ward. June -Sept. (Eu.) 



6. R. oblongifblius, Ell. Stem erect or ascending, often pubescent 

 below, slender (1° high), diffusely branched above and many-flowered ; leaves ser- 

 rate or denticulate; the lower long-petioled, ovate or oblong (j'-lg' long) ; the 

 uppermost linear; flowers 3" -5" broad; petals 5, twice the length of the calyx, 

 bright yellow; stamens numerous; carpels minute, almost globular, tipped with a 

 very small sessile stigma. (R. pusillus, var. Torr. $* Gr. Fl. R. Texensis, 

 Engelm.) Wet prairies, Salem, Illinois, Bebb, and in S. States. June. 



7. R. pusillus, Poir. Stem ascending, weak, loosely branching (6'- 18' ^y^-v^A^ 

 long) ; leaves entire or obscurely denticulate ; the lowest round-ovate or heart- 

 shaped (^' long), long-petioled, the upper oblong or lanceolate (l'-lj* long) ; 



flowers very small ; petals 1-5, yellowish, scarcely exceeding the calyx and the 3 - 

 10 stamens ; carpels very turgid, tipped with a minute sessile stigma. — Wet 

 places, S. New York and southward along the coast. June - Aug. 



■*— -i — -*— Terrestrial, with annual root, spreading by runners, glabrous: leaves all 

 rounded and undivided but coarsely crenate : carpels in fruit forming an oblong 

 head. 



8. R. Cymbalaria, Pursh. (Sea-side Crowfoot.) Flowering stems 

 leafless (3' -6' high), 1 - 7-flowered ; leaves clustered at the root and on the 

 joints of the long rooting runners, roundish-heart-shaped or kidney-shaped, 



