406 BANUNCULACEAE (CROWFOOT FAMILY) 



from Delphin, in allusion to the shape of the flower, which is sometimes not 

 unlike the classical figures of the dolphin.) 



Introduced annuals ; pistil 1. 



Follicle 1 cm. long, glabrous 1. D. Consolida. 



Follicle 1.2-2 cm. long, pubescent 2. D. Ajacis. 



Indigenous perennials ; pistils 3. 



Roots short, tuberous ; pods strongly divergent 8. Z>. iricome. 



Roots elongated, woody ; pods nearly or quite erect. 

 Flowers purplish blue. 

 Petals bearded with yellow hairs ; inflorescence loose, pyramidal ; 



plant glabrous 



Petals bearded with white hairs ; racemes virgate, 



Stem glabrous 



Stem velvety-pubescouC .... 

 Flowers sky-blue ; raceme lax, few-flowered 

 Flowers white or nearly so ; raceme virgate 



4. D. Treleasei. 



5. Z>. exaltatum. 



6. D. Nortonianum 



7. D. azureum. 



8. D. Penardi. 



1. D. Consolida L. (Field L.) Leaves dissected into narrow linear lobes ; 

 inflorescence loosely paniculate ; pedicels shorter than the bracts ; pod glabrous. 



— Old grain-fields, and sparingly along roadsides, N. J. , southw. and westw., 

 rare. (Nat. from Eu.) 



2. D. AjXcis L. Flowers more numerous and spicately racemose ; pods pubes- 

 cent.— Fields, roadsides, and wet places, Vt. to Mo. and N. C. June-Aug. 

 (Nat. from Eu.) 



3. D. tric6rne Michx. (Dwarf L.) Root a tuberous cluster ; stem simple, 

 1.5-9 dm. high ; leaves deeply 5-parted, their divisions unequally 3-5-cleft ; the 

 lobes, linear, acutish ; raceme few-flowered, loose ; flowers bright blue, some- 

 times white, occasionally numerous ; spur straightish, ascending ; pods strongly 

 diverging. — W. Pa. to Minn., Neb., and southw. Apr., May. 



4. D. Treleasei Bush. Essentially glabrous throughout, 7-10 dm. high, 

 loosely branching ; leaf -segments deeply cleft, the lobes long, linear, acute ; lower 

 pedicels much elongated, often 10-14 cm. in length ; calyx rich bluish purple; 

 the lamina of each sepal more or less distinctly spotted with yellow or brown ; 

 petals with a conspicuous yellow heard. — Barrens of s. Mo. {Bush). May, 

 June. 



5. D. exaltitum Ait. (Tall L.) Stems slender, 6-15 dm. high; leaves 

 deeply 3-5-cleft, the divisions narrowly wedge-form, diverging, 3-cleft at the 

 apex, acute ; racemes wand-like, panicled, many-flowered ; flowers purplish blue, 

 downy ; spur straight ; pods erect. (2). urceolatum of auth., not Jacq.) — Rich 

 soil. Pa. to Minn., Neb., and southw. July. 



6. D. Nortonianum Mackenzie & Bush. Erect, simple, 8 dm. high ; stem leafy, 

 covered with copious spreading yellowish and somewhat viscid pubescence ; 

 leaf-segments deeply cleft, the lobes narrowly linear, acutish ; raceme single, 

 wand-like, the lower pedicels scarcely longer than the upper; flowers bluish 

 purple ; the spur erect or nearly so. — Barrens of the Ozark Mts., s. Mo. {Bush). 

 May, June. 



7. D. azureum Michx. Stem 3-6 dm. high, finely cinereous-pubescent; 

 leaves deeply 3-5-parted, the divisions 2-3 times cleft ; the lobes all narrowly 

 linear ; flowers sky-blue ; spur ascending or horizontal, usually curved upward ; 

 pods erect. {9 D. carolinianum Walt.) — Va., N. C. and Ga. to Ark., Mo., 

 Minn., and Sask. May, June. 



8. D. Penardi Huth. Simple, erect, pubescent and generally glandular; 

 raceme strict, elongated ; flowers numerous, white or nearly so, soft-pubescent ; 

 the spur chiefly ascending or erect. {D. camporum Greene ; D. albescens Rydb.) 



— Prairies and open deciduous woods. 111. and Wise, to N. Mex. and the Rocky 

 Mts. 



19. ACONtTUM [Tourn.] L. Aconite. Monkshood. Wolfsbane 



Sepals 5, petal-like, very irregular : the upper one (helmet) hooded or hel- 

 met-shaped, larger than the others. Upper petals 2, consisting of small spur- 

 shaped bodies raised on long claws and concealed under the helmet; other petals 

 6 or fewer, much reduced or wholly wanting. Pistils 3-5. Pods several-seeded, 



