112 BORAGINACEAE. 



usually exserted, anthers linear. Ovary 1-celled, hairy. Capsule t-4-seeded. 



* Calyx not at all or scarcely appendaaed in the sinuses. 



H. vitginicum L. Stem 12-20 inches high, sparingly pubescent, becoming 

 glabrate; leaves pinnatifid, leaflets ovate or oblong, pointed, cut-toothed, 

 often incised, the upper confluent; peduncles longer than the petioles, 

 forked; flowers pale blue, in a roundish cluster; calj'x not appendaged, its 

 lobes linear, ciliate; stamens and style exserted. Rich woods; May-June: 

 common. 



M. macrophyllum Nutt. Stem hairy; leaves ovate-oblung, pinnatifid, 

 cut-toothed; peduncles shorter than the petioles; flowers white, in dense 

 globose cymes; calyx-lobes lanceolate, filaments exserted. Rich woods; 

 June-July; rare; Johnson county; reported from Scott county. 



* • Calyx with shni-t retlexcd appendages in the sinuses. 



hj. appendiculatum M.v. Stem 1-2 feet high, hairy, weak; leaves broad- 

 ly ovate, base rounded, long-petioled, paltnately 5-lobed. lowest pinnately 

 divided; lobes pointed, widely toothed; calyx with short appendages, its lobes 

 triangular-lanceolate; stamens slightly if at all exserted; flowers blue. Rich 

 woods, near the base of cliffs; May-June; common in the eastern counties, 

 rarer westward; Winneshiek, Jackson, Muscatine, Des Moines, Lee, Henry, 

 Johnson, and Boone counties; reported from Fayette county. 



ELLISIA L. Delicate annual, at length much-branched. Leaves pinnately 

 parted, divisions linear-oblong or lanceolate, incised or toothed. Flowers 

 solitary, whitish. Calyx 5-parted, becoming large and foliaceous in fruit, 

 not appendaged. Corolla narrowly campanulate, about the length of the 

 calyx, tube with 5 small appendages within. Stamens included. 



E. nyctelea L. Stem weak, somewhat hairy; leaves petioled, lower oppo- 

 site, upper alternate; peduncles slender, axillary or opposite the leaves. 

 Rich soil; May-July: fields and woods; common. (Mttcivcnlyx nyctelca (L.) 

 Ivuntze). 



BORRAGINACEAE. Until Borage Family. 

 Annual biennial or perennial herbs, with round stems, andalternate en- 

 tire exstipulate leaves. Calyx 5-parted. Corolla 5-lobed, imbricated in 

 the bud, convolute in Myosotis. Stamens 5. inserted on the tube of the 

 corolla. Style 1; stigmas 1 or 2. Ovary deeply 4-lobed, in ours separat- 

 ing into 4 one-seeded nutlets, style rising from their midst. Flowers in 

 slender bracted or bractless racemes. 



* Nutlets armed with prickles. 

 Oynoglossum. Corolla funnelform; nutlets attached near the apex, much produced 



backwards. 

 Echinospehmum. Corolla salverform; nutlets erect or ascending. 



* * Nutlets mutinied. 

 Meiitensia. Corolla trumpet -shaped, purplish blue. 

 Myosotis. Corolla tubular or salverform, lobes rounded, throat closed. 

 LiThospermum. Corolla funnelfovm or salverform, yellow, limb spreading, throat 



naked or appendaged. 

 Onosmodiitm. Corolla tubular, hirsute, whitish, erect, unnppendaged. 

 Eohii'M. Flowers irregular; stamens exserted. 



CYNOOLOSSUM L. Coarse strong-scented herbs, with alternate entire 

 leaves, and blue or white flowers. Calyx 5-parted. Corolla funnelform, 

 about equalling the calyx, throat closed by convex scales, lobes rounded. 

 Nutlets depressed, attached near the apex to the base of the style, the 4-nut- 



