RANUNCULACEAE.. 



Vol II. 



5. Ranunculus pusillus Poir. Low 

 Spearwor*:. Fig. 1899. 



R. pusillus Poir. in Lam. Encycl. 6: 99. 1804. 



Annual, slender, weak, glabrous, branching, 

 6'-i8' long. Leaves entire or denticulate, the 

 lower oblong or ovate, sometimes cordate, on 

 long petioles, the upper narrower, lanceolate 

 or linear, short-petioled or sessile; flowers yel- 

 low, 2"-3" broa'd, the petals few, often barely 

 exceeding the sepals; stamens i-io; head of 

 fruit globose, 2" broad ; achenes beakless, 

 nierely tipped by the very short persistent 

 style-base. 



Marshes, southern New York and New Jersey 

 near the coast, southeastern Pennsylvania, south 

 to Florida and west through the Gulf States to 

 Texas, north to Tennessee and Missouri. Dwarf 

 crowfoot. April-July. 



4. Ranunculus lapponicus L. Lap- 

 land Buttercup. Fig. 1898. 



R. lapponicus L. Sp. PI. 553. i7S3- 

 Anemone nudicaiilis A. Gray, Coult. Bot. Gaz. 

 II : 17. 1886. 



Scapose from running, rootstocks, 3'-6' 

 high. Basal leaves long-petioled, the blade 

 I'-ii' broad, reniform, 3-parted, the divi- 

 sions broadly obovate, cuneate, obtuse, 

 crenate or lobed; scape i-flowered, slender, 

 longer than the leaves, occasionally bearing 

 a single deeply lobed leaf ; flower 3"-s" 

 broad, yellow ; petals 5-6, veined with 

 orange ; sepals generally fewer and re- 

 flexed ; head of fruit globose, 6" broad; 

 achenes flattened, ovate, gradually narrowed 

 into a slender hooked beak. 



In bogs, Greenland and Labrador to Alaska, 

 south to northern Minnesota. Northern Eu- 

 rope and Siberia. Summer. 



6. Ranunculus oblongifolius Ell. Oblong- 

 leaved Spearwort. Fig. 1900. 



Ranunculus oblongifolius EU. Bot. S. C. & Ga. 2 : 58. 



1821-24. 

 Ranunculus pusillus var. oblongifolius T. & G. Fl. 



N. A. I : 16. 1838. 



Annual, branched above, erect or ascend- 

 ing, i°-2° high, glabrous or pubescent. Leaves 

 entire or denticulate, oblong, or oblong-lanceo- 

 late, the lower on long petioles, the blade some- 

 times 3' long, the upper narrower, lanceolate or 

 linear ; flowers yellow, 3"-(>" broad, the 5 petals 

 much exceeding the sepals; stamens numerous; 

 head of fruit 2" broad ; achenes merely tipped 

 by the very short style-base. 



In swamps, near the coast, Delaware to Florida 

 and Texas, north to southern Illinois and Missouri. 

 April-Sept. 



