dfljhinium. RANUNCULACE.E. 23 



1). leucophaeuin Greene Eryth. iii, 118. D. Menziesii var. ochroleucum 

 Nv.tt. T. & G. Ft. i, 31. Very finely pubescent with retrorsely appressed 

 hairs, usually rather slender, 1-3 feet high from a more or less branching 

 tuber: leaves' ternate, the nearly sessile leaflets deeply cut into 3-5 lacini- 

 ately trifid lobes : racemes virgate, 3-10 inches long: pedicels erect in fruit, 

 the lowest 1-2 inches long, the upper 2-6 lines long, all more or less gland- 

 ular: sepals whitish or ochroleucous outside, spur slender, 8-10 lines long, 

 longer than the oblong lower petals, blue bordered with white, rounded at 

 the summit, repand-dentate, rather densely bearded : follicles erect, rather 

 densely pubescent, oblong, 5-7 lines long. Open plains, Willamette val- 

 ley and along the Willamette river near Oswego. 



D. simplex Dougl. Hook. Fl. i, 25. Tall and strict, 2-3 feet high : 

 pubescent throughout, with short and soft spreading almost velvety down: 

 leaves all dissected into linear divisions and lobes, racemes spiciform and 

 virgate : pedicels shorter than the spur, erect in flower and fruit: calyx 

 pubescent outside. Root and fruit not seen. Western Idaho. (Gray Syn. 

 Fl. i, 49.) 



D. distichum Geyer Lond. Journ. Bot. vi. 68. Stem strict a foot or 

 two to rarely 3 feet high from a fasciculate tuberous root, glaucescent, gla- 

 brous or the inflorescence puberulent, rather rigid, several-leaved, simple 

 or the larger plants having one or more lateral racemes : leaves thickish ; 

 lower ones of rounded outline, with cuneate or narrow divisions and lobes ; 

 upper ones short-petioled, erect, and with aproximate or little spreading 

 linear divisions and lobes: raceme spiciform and virgate, many-flowered: 

 pedicels shorter than the spur, erect or appressed both in flower and fruit : 

 flowers blue or violet, approximate and conspicuously distichous in the 

 very spiciform raceme : sepals at first canescent puberulent outside, a third 

 to nearly a half inch long, follicles erect, seldom over a half inch long. Low 

 prairies, etc., Oregon and Washington to Montana. 



D. Columbianuiii Greene Eryth. ii, 193. Densely canescent: stems 

 simple, 4-12 inches high or more, from a fascicle of thickened roots : lower 

 leaves reniform, irregularly cut into oblong callous-tipped lobes : upper 

 ones finely dissected into linear lobes : inflorescence tawny pubescent : 

 flowers dark blue, rather small, in a strict secund or virgate spike: pedi- 

 cels erect, short and stout : sepals oblong, about half as long as the slender 

 spur, appressed canescent ; follicles densely tawny-pubescent, 5-8 lines 

 long by a line or more wide, erect : seeds winged. In winter rivulets, east- 

 ern Washington to Nevada and California. 



D. Andersoni Gray 1. c. Sparingly pubescent or glabrous, 4-18 inches 

 high, rather stout : leaves thickish, round-reniform in outline, the lower 

 coarsely and the upper finely dissected into obtuse linear lobes ; flowers 

 blue, in a condensed spike : sepals broadly spatulate, 6 lines long or more, 

 finely pubescent : petals pale blue veined with dark blue : follicles glab- 

 rous* 8-12 lines long by l%-2 lines w T ide, erect, with acute spreading 

 tips: seeds broadly winged with a broad depressed summit. Southeastern 

 Oregon to Nevada and California. 



1>. Nuttallianum Pritz. in Walp. Rep. ii, 744. Glabrous or barely pu- 

 berulent : stem slender, a span to a foot high from a fasciculate-tuberous 

 iroot; leaves small, all pedately parted into narrowly linear divisions of an 

 onch or more in length : racemes 3-15 flowered : pedicels about the length, 

 of the flowers; sepals 3 lines long, oblong, little surpassing the petals 

 much shorter than the slender spur : follicles (so far as known) oval-ob- 

 long, erect, about 4 lines long. Eastern borders of Washington to the 

 Rocky Mountains. 



1). foicolor Nutt. Jour. Acad. Philad. vii, 10. Pubescent, a span to a 

 foot high from fascicled, and mostly deep descending roots, rather stout : 

 leaves thickish, the lower orbicular in outline, all deeply cleft or parted 

 with mostly linear and obtuse segments ; racemes few to several-flowered : 

 lower pedicels an inch or two long, ascending : sepals and spur half to 



