RANUNCULACEAE. 417 



racemes longer, 1-3 dm. long, more densely flowered; follicle 12-15 mm., tipped 

 with a short stout beak. Often escaped from gardens, from N. Y. to Va., Tenn. 

 and Mo. 



3. Delphinium Carolinianum Walt. CAROLINA LARKSPUR. (I. F. f. 1564.) 

 Stem slender, more or less glandular pubescent, 3-6 dm. high, from a cluster of 

 thickened roots. Leaves deeply cleft into narrowly linear toothed or cleft segments; 

 flowers blue or the petals light brown, 2-3 cm. long, the spur curved upward, 

 16 mm. long; follicles downy, 14-18 mm. long, tipped with a subulate beak; seed- 

 coat rugose. Sandy soil, from N. Car. to Ark., La. and Fla.; probably also in 

 southern Va. May-June. \D. azureum Michx.j 



4. Delphinium albescens Rydb. PRAIRIE LARKSPUR. Stem stout and tall, 

 5-10 dm. high, strigose below, more or less glandular above, from a thick, woody 

 root. Leaves as those of the preceding, but generally larger and with broader 

 segments, more or less puberulent; flowers white, slightly tinged with blue and 

 bluish spots on the sepals; spur generally horizontal, 12-15 mm. long, straight or 

 slightly curved upward; follicle 12-18 mm. long, puberulent. It has hitherto been 

 confused with the preceding. Open prairies, from 111. to Manitoba, Kans. and 

 Ark. May-July. 



5. Delphinium Nelsoni Greene. NELSON'S LARKSPUR. (I. F. f. I564a.) 

 Finely puberulent, at least above; stem slender, simple, 2-4 dm. high from a 

 cluster of tuberous roots near the surface of the ground. Leaves firm, divided into 

 linear segments; flowers blue, slightly villous, slender-pedicelled ; sepals oblong, 

 shorter than the slender spur; lower petal 2-cleft, with a tuft of hairs about the 

 middle; appressed-pubescent; seeds wing-angled above. Wyo., western Neb. and 

 Colo. May-June. 



6. Delphinium urceolatum Jacq. TALL LARKSPUR. (I. F. f. 1563.) Slen- 

 der, 6-18 dm. high, glabrous below, densely and finely pubescent above. Leaves 

 large, all but the upper petioled, deeply 3-5 -cleft, the divisions acuminate, upper 

 ones reduced to small linear bracts; racemes dense, elongated; flowers purple or 

 blue, 16-20 mm. long, downy-pubescent, the lower pedicels about 2 cm. long; spur 

 nearly straight, 4 mm. long; follicles 8-io mm. long, pubescent, tipped with a 

 subulate beak. In woods, Penn. to Minn., south to N. Car., Ala. and Neb. 

 July- Aug. \D~ exaltatum Ait.] 



7. Delphinium tricorne Michx. DWARF LARKSPUR. (I. F. f. 1565.) Stout, 

 simple, 3-10 dm. high. Leaves slender-petioled, deeply 5-7-cleft or divided, the 

 divisions linear or obovate, obtuse, entire, or again cleft and toothed; raceme loose, 

 10-12 cm. long, mostly several-flowered; flowers 2.5-3 cm. long, blue or white; 

 spur generally slightly bent, ascending, 2-2.5 cm - l n g; follicles IO-I2 mm. long, 

 tipped with a short beak; seed-coat smooth, dark. Western Penn. to Ga., west to 

 Minn, and Ark. Roots tuberous. April-June. 



13. ACONITUM L. 



Erect ascending or trailing perennial herbs, with palmately lobed or divided 

 leaves, and large irregular showy flowers. Sepals 5, the posterior (upper) one 

 larger, hooded or helmet-shaped. Petals 2-5, small, the two superior ones hooded, 

 clawed, concealed in the helmet, the three posterior ones, when present, minute. 

 Stamens numerous. Carpels 3-5, sessile, many-ovuled. forming follicles at ma- 

 turity. [Ancient Greek name for these plants.] A genus of some 18 species, 

 mostly natives of the north temperate zone. Besides the following, 4 others are 

 found in the Rocky Mts. and on the Pacific Coast. 



Flowers blue. 



Helmet arched, tipped with a descending beak. i. A. Noveboracense. 



Helmet conic, slightly beaked. 2. A. uncinatum. 



Flowers white; stem trailing; helmet elongated -conic. 3. A. reclinattim. 



i. Aconitum Noveboracense A. Gray. NEW YORK MONKSHOOD. (I. F. f. 

 1566.) Slender, erect, about 6 dm. high, leafy. Lower leaves all petioled, 7-10 

 cm. broad, nearly orbicular, deeply 5-7-cleft, the divisions obovate, cuneate, 

 toothed and cut, acute or acuminate, glabrous, rather thin; upper leaves nearly 

 sessile, 3~5-cleft, otherwise similar; flowers 15 mm. broad; follicles erect, 6 mm. 

 long, subulate-beaked. Orange, Ulster and Chenango Counties, N. Y. Reported 

 from Ohio. June-Aug. 



