204 



RANUNCULACEAE 



deltoid in outline, 3-8 cm. long by 5—13 cm. broad, leaflets 3-parted, parts again lobed; sepals 

 spreading, 3-4.5 mm. long, pubescent or glabrous; petals 5, yellow, obovate, 5-7 mm. long; 

 achenes 30-50 in an ovoid cylindrical head 7-12 mm. long by 5-7 mm. in diameter, each achene 

 3 mm. long, smooth and glabrous, the beak short and straight ; receptacle enlarged in fruit, hairy. 



Muddy ground, Transition Zone; Alaska south to Oregon and Goose Lake, California, east to Hudson Bay 

 and Iowa, Arizona, and New Mexico; also in Siberia. Type locality: Mackenzie River, Northwest Territory, 

 Canada. June— July. 



11. Ranunculus pennsylvanicus L. f. Bristly Buttercup or Crowfoot. Fig. 1832. 



Ranunculus pennsylvanicus L. f. Suppl. 272. 1781. 



Perennial, stems simple below, branching above, 4-10 dm. long, fistulous, hispid. Basal 

 leaves early deciduous ; cauline leaves pinnate, the lower 5-7 cm. long by 9-13 cm. broad, leaflets 

 petiolate, cuneate, the middle one 3-parted and again lobed, appressed-hispidulose ; sepals re- 

 flexed, 4-5 mm. long, slightly hairy ; petals 5, yellow, nearly round, 2-3 mm. long ; achenes 60-80 

 in a cylindrical or ovoid-cylindrical head 10-14 mm. long by 7-9 mm. in diameter, body 2.5 mm. 

 long by 1 . 8 mm. broad, smooth and glabrous, beak 1 mm. long, deltoid ; receptacle elongated in 

 fruit, pubescent. 



Transition Zone; British Columbia south to northern Washington, east to Nova Scotia and Pennsylvania; 

 also in eastern Asia. Type locality: Pennsylvania. May-July. 



1827 



1828 



1830 



1831 



1832 



1827. Ranunculus californicus 



1828. Ranunculus Bongardii 



1829. Ranunculus Bloomeri 



1830. Ranunculus orthorhynchus 



1831. Ranunculus Macounii 



1832. Ranunculus pennsylvanicus 



