94 RANUNCULACEAE 



Leaf-segments 3-7, broad, cuneate, merely cleft into 

 broadly lanceolate lobes. 

 Sepals yellowish wliite or liglit blue. 



22. D. cucullatum. 

 Sepals dark blue. 23. D. canmorense. 



Leaf-segments narrow, repeatedly dissected into linear 

 or linear-lanceolate divisions. 

 Inflorescence paniculate, strlgose-puberulent; leaf- 

 segments linear. 24. D. robustum. 

 Inflorescence racemose, simple, glabrous or nearly so; 

 leaf-segments narrowly lanceolate. 



25. D. elongalum. 

 Inflorescence lax; follicles strongly arcuate. 



26. D. ramosum. 

 ** Follicles glabrous. (VI. Glatjca.) 27. D. Brownii. 



b. Plant more or less viscid, especially the pedicels. 

 ♦Plant tall, 4-20 dm. high, not cespitose. 



Leaves dissected into linear lobes; follicles densely strigose. (VII. 



VisciDA.1 28. D. viscidum. 



Leaves divided into cuneate or rhomboid, merely cleft, divisions. 

 Follicles viscid-pubescent. (VIII. Occidentalia.) 



Flowers light blue, or yellowish, tinged with blue or purple. 



29. D. multijlorum. 

 Flowers dark blue. 30. D. ocddentale. 



Follicles glabrous. (IX. Subaipina.) 



Sepals obtuse. 31. D. reticulatum. 



Sepals acute or acuminate. 



Sepals at most equalling the spur. 32. D. Barbeyi. 

 Sepals much longer than the spur. 33. £). attenuatum. 

 ** Plant less than 4 dm. high, cespitose. (X. Alpbstria.) 



Stem 2-4 dm. high, puberulent or glabrous. 34. D. glaucescens. 

 Stem about 1 dm. high, viscid-pubescent. 35. D. alpestre. 



B. Carpels and follicles solitary; petals 2, united. (XI. Consolidae.) 



36. D. Ajaeis. 



22. ACONITUM L. Aconite, Monkshood, Wolfsbane. 



Hood boat-shaped, slightljf saccate, almost semicircular in outline; stem slender, scarcely 

 more than 3 dm. mgh; perennials with tubers. 

 Ultimate divisions of the basal leaves linear, lineeir-oblong, or linear-lanceolate. 



1. A. tenve. 

 Ultimate divisions ofthe basal leaves lanceolate. 2. A. delphinifolium. 



Hood helmet-shaped, deeply saccate; stem stout, 4-10 dm. high; root fleshy, usually 

 fusiform. 

 Stem, at least the upper portion, viscid-pubescent. 



Primary divisions oJ the leaves cleft or toothed ; upper end of pedicels not glabrous. 

 Front-Une of the hood strongly concave, i. e., the beak porrect, almost hori- 

 zontal. 

 Lower sepals one-half to two-thirds as long as the lateral ones. 



Beak of the hood almost as long as the portion below; inflorescence 



usually simple; follicles erect. 3. A. porrectum. 



Beak of the hood seldom one-half as long as the portion below; inflores- 

 cence branched ; follicles ascending-spreading. 4. A. divaricatum. 

 Lower sepals at least three-fourths as long as the lateral ones; leaf-seg- 

 ments rather broad. 5. A. Bakeri. 

 Front-line of the hood almost straight, i. e., the beak directed downward, or 

 slightly porrect in A. columbianum. 

 Segments of the leaves linear-ianceolate. 6. A. ramosum. 

 Segments of the leaves lanceolate. 



Lateral sepals very oblique; upper margin semi-reniform. 



7. A. columbianum. 

 Lateral sepals moderately oblique; upper margin slightly if at all con- 

 cave. 

 Flowers blue. 8. A. insigne. 



Flowers ochroleucous. 9. A. lutescens. 



Primary divisions of at least the stem-leaves entire ; thickened portion of the 

 pedicels glabrous. 10. A. patens. 



Whole plant glabrous. 11. A. glaberrimum. 



23. PAEONIA L. Paeont. l. p. Brownii. 



Family 49. BERBERIDACEAE. Barberet Family. 



Primary leaves reduced to spines; secondary ones fascicled in their axils, simple or uni- 



foliolate. 1. Berberis. 



Primary leaves pinuately compound, evergreen, no secondary ones in their axils. 



2. Odostemon. 



1. BERBERIS (Tourn.) L. Barberry. 1. B. Fendleri. 



2. ODOSTEMON Raf. Oregon Grapes. 



Fruit becoming dry and inflated at maturity; leaflets less than 3 cm. long. 



1. O. Fremonlii. 



