RANUNCULACEAE. 109 



somewhat viscid; flowers deep blue; calyx glabrous or nearly so, the spur longer 

 than the sepals; follicles glabrous, 1 cm. long, shorter than the pedicels. Moist 

 places on the highest parts of the Blue Mountains. 



Delphinium cyanoreios Piper. More or less pubescent with fine soft 

 often dense spreading somewhat viscid hairs; stems strictly erect, simple or 

 rarely with a few branches, 30-70 cm. high; leaves rather few, mostly near the 

 base, orbicular in outline, 2-5 cm. broad, thickish, the lower cleft into broad 

 cuneate lobes, the upper into narrower lobes or divisions; raceme moderately 

 dense, usually 10-20-flowered; calyx pubescent like the axis, the spur about as 

 long as the sepals; follicles densely and finely villous, not spreading. In the 

 mountains, usually at considerable altitudes. The pubescence even when 

 confined to the inflorescence is always characteristic. 



Delphinium distichum Geyer. Pubescence of minute mostly curved and 

 appressed hairs, never villous; stems strictly erect, 30-90 cm. high, simple or 

 rarely with a few erect branches; leaves rather numerous, thickish, deeply 

 cleft or parted, the lower into cuneate rather broad segments, the upper into 

 narrow segments, all glabrous; raceme very dense, many-flowered, almost 

 spicate; calyx puberulent externally, the spur usually longer than the sepals; 

 follicles puberulent, not spreading, about 1 cm. long. In moist meadows 

 especially in Spokane County. 



Delphinium simplex Dougl. Roots short, thick; stems strict, erect, 

 puberulent, 30-80 cm. tall, usually simple, rarely with a few erect branches; 

 leaves puberulent, all divided into narrow lobes, linear in the upper leaves, 

 broader in the lower ones; petioles shorter than the blades except in the lower 

 leaves; raceme spike-like, the pedicels shorter than the pale dull blue flowers; 

 sepals 8-10 mm. long, shorter than the spur; follicles puberulent, erect, about 

 1 cm. long. Common in low meadows. 



Delphinium menziesii DC. Stems erect, simple or branched above, SO- 

 TO cm. tall, appressed-puberulent at least above; leaves 3-7-parted, the 

 divisions usually deeply cleft into 2-4, usually 3 lobes, the segments linear or 

 lanceolate; petioles mostly exceeding the blades; racemes loose, 5-25-flowered; 

 pedicels spreading, mostly as long as or longer than the dark blue flowers; 

 sepals pubescent on the outside, 2-2.5 cm. long; spur as long, mostly acute and 

 slender; follicles 3, strongly diverging, pubescent, 1.4-3 cm. long. Common on 

 rocky hillsides. 



Delphinium coltmibianum Greene {D. nuttalUi Gray). Habit and appear- 

 ance of D. menziesii but the herbage glabrous and usually a little glaucous; 

 follicles glabrous, spreading moderately at maturity. Mostly at low altitudes 

 in sagebrush or scab land. 



Delphinium depauperatum Nutt. Very similar to D. menziesii but the 

 minute pubescence soft, rather dense, not appressed, somewhat viscid; 

 follicles erect or but little spreading. Blue Mountains; Mt. Carlton; also 

 along the lower Clearwater River, Idaho, where the plants are larger and 

 stouter. 



147. ACONITUM. 



Tall erect perennial herbs; leaves palmately-lobed or divided; 

 flowers large, showy, in terminal racemes or panicles; sepals 5, 

 petal-like, very irregular, the upper one hooded or helmet-shaped ; 

 petals 2-5, the upper two hooded, on long claws, concealed in the 

 helmet; stamens numerous; pistils 3-5, many-ovuled, forming 

 follicles at maturity. 



