244 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Sepals not spurred; perennials or biennials; 
leaves not all basal; receptacle merely 
conic or short-cylindric. 
Achenes transversely wrinkled; petals 
white; plants floating; leaves dis- 
sected into capillary segments. .... 7. BaTRACHIUM (p. 250). 
Achenes not transversely wrinkled; petals 
yellow, at least outside; plants not 
floating; leaves not dissected into 
capillary segments. 
Achenes not ribbed................-- 8. Ranuncutws (p. 251). 
Achenes longitudinally ribbed...... 9, HALERPESTES (p. 203), 
Petals wanting, but the sepals often petal-like. 
Sepals imbricated in the bud; leaves alternate 
. or only those subtending the inflores- 
cence opposite. 
Flowers numerous, not subtended by op- 
posite or verticillate bracts. 
Seed pendulous; leaves compound ..10. THaLicTruM (p. 254). 
Seed erect; leaves simple..........- 16. TRAUTVETTERIA (p. 258). 
Flowers solitary or few, subtended by 
opposite or verticillate bracts. 
Styles short, not elongated in fruit..11. ANEMONE (p. 255), 
Styles much elongated in fruit (plu- 
MOS€)...2-2-2. ee eee eee eee eee 12. PULSATILLA (p. 255), 
Sepals valvate in the bud; leaves all opposite. 
Flowers cymose-paniculate, dicecious or 
polygamo-dicecious. (Stamens and 
sepals spreading)..................13. CLEMATIS (p. 256). 
Flowers solitary, perfect. 
Stamens erect; sepals thick, more or 
less convergent; staminodia 
wanting.............-------- 14. Viorna (p. 256). 
Stamens spreading; sepals thin, 
spreading; staminodia often 
present.........--..-........-15. ATRAGENE (p. 258). 
1. DELPHINIUM L. Larkspur. 
Perennial herbs with leafy stems; sepals 5, irregular, petal-like, the upper one pro- 
longed into a spur; petals 4, irregular, the upper continued as a short spur, enveloped 
in the spur of the calyx; pistils 1 to 5, forming many-seeded pods in fruit; flowers in 
terminal racemes. 
KEY TO THE SPECIES. 
Plants low, 50 cm. high or mostly less. 
Leaves not crowded at the base of the stem, the cauline 
like the basal ones; flowers dark blue. 
Plants viscid; lower pedicels not elongated......... 2. D. alpestre. 
Plants not viscid; lower pedicels elongated......... 1. D. nelsonit. 
Leaves forming a cluster about the base of the stem, the 
cauline ones few or none; flowers blue to whitish. 
Flowers whitish or very pale blue...........--.-.-- 3. D. camporum. 
