RANUNCUEACEAE OF IOWA. 103 



the state that does not include this species in its flora. 

 The species has developed none of the tendencies of a 

 weed. Because of close pasturing the number of individ- 

 uals is becoming much less than formerly, yet all in all it 

 persists with remarkable tenacity, however, reaching its 

 greatest development along bluffs and in wooded ravines. 



Bessey, Contr. to the Flora of Iowa, p. 91, in Fourth Rep. Iowa Agr. 

 Col., 1872; Arthur, Contr. to the Flora of Iowa, p. 6, 1876; Flora of Floyd 

 county in History of Floyd county, p. 310; Nag-el and Haupt, Proc. 

 Davenport Acad. Nat. Sciences, vol. l,p. 154; Pammel, Proc. Iowa Acad, 

 of Sciences, vol. 3, p. Ill; Fink, Proc. Iowa Acad, of Sciences, vol. 4, 

 p. 83; Fitzpatrick, Proc. Iowa Acad, of Sciences, vol. 5, p. 108 and p. 

 135; vol. 6, p. 177; Manual of the Flowering Plants of Iowa, p. 5; Barnes, 

 Reppert and Miller, Proc. Davenport Acad, of Nat. Sciences, vol. 8, 

 p. 201. 



DELPHINIUM L. Sp. PI. 530. 1753. 



Annual or perennial erect branching herbs, with pal- 

 mately cut or divided leaves, and racemose flowers. Sepals 

 5, the posterior one and occasionally the anterior one pro- 

 longed into a spur, petaloid. Petals irregular, 4 or 2, 

 rarely more, the upper pair prolonged backward into the 

 spur of the calyx. Pistils becoming many-seeded follicles 

 in fruit. 



* Perennials; leaves long-pctiolcd; pistils 3 . 



Delphinium tricorne Mx. Fl. Bor. Am., vol. 1, 

 p. 314. 1803. Dwarf Larkspur. 



Stem simple or but very little branched, hollow, 1-3 

 feet high, glabrous or pubescent; roots a cluster of small 

 tubers; leaves about 5-parted, divisions 2-3-cleft; raceme 

 open; flowers blue or whitish; spur ascending, nearly 

 straight; follicles 3, diverging, tipped with a short beak. 



This species is to be found in prairies and rich woods, 

 flowering in May. Its occurrence may be rated as frequent, 

 though in many localities it is quite common, and again in 

 some districts it is rare or not to be met with at all. Pres- 

 ent information confines this species within our limits to 

 V 2 2 



