MALVACEAE (MALLOW FAMILY) 669 



* * Involucel none ; calyx o-parted; carpels strongly rugose. 



3. C. alcaeoides (Michx.) Gray. Strigose-pubescent ; stems slender, 3 dm. 

 high, erect from a perennial root ; loicer leaves triangular-heart-shaped, incised, 

 the upper 5-7-parted, laciniate, the uppermost divided into linear segments ; 

 flowers rose-color or white, corj^mbose, on slender peduncles. — Barren oak 

 lauds, s. Ky. to Neb. and Tex. 



4. C. digitata Nutt. Sparsely hirsute or glabrous, erect ; leaves few, round- 

 cordate, 5-7-parted, the cauline commonly with linear divisions ; peduncles sub- 

 racemose, long, filiform ; flowers red-purple to white. — 111. to Kan. and Tex. 



9. NAPAEA [Clayt.] L. Glade Mallow 



Calyx naked at the base, 5-toothed. Petals entire. Flowers dioecious ; the 

 staminate destitute of pistils, with 15-20 anthers ; the fertile with a short col- 

 umn of usually antherless filaments. Styles 8-10, stigmatic along the inside. 

 Fruit depressed-globular, separating into as many kidney-shaped 1-seeded beak- 

 less scarcely dehiscent carpels as styles. Radicle pointing downward. — Tall 

 roughish perennial herb, with very large 9-11-parted lower leaves, the pointed 

 lobes pinnatifid-cut, and small white panicled flowers. (Named from vdTnrj^ a 

 glade, or, poetically, a nymph of the glades.) 



1. N. dioica L.^ Stems nearly simple, 1.5-3 m. high. — Pa. to Va., w. to 

 la. and Minn., rare. July. 



10. KOSTELETZKYA Presl. 



Pod depressed, with a single seed in each cell. Otherwise as Hibiscus. — 

 Shrubs or, as in the case of our single species, perennial herbs, chiefly of tropical 

 America. (Named for V. F. Kosteletzky, a Bohemian botanist.) 



1. K. virginica (L.) Fresl. Roughish-hairy perennial. 0-12 dm. high ; leaves 

 halberd-shaped and heart-shaped, the lower 3-lobed ; corolla 5 cm. wide, rose- 

 color ; column slender. — Marshes on the coast, N. Y., and southw. Aug. 



11. HIBISCUS L. Rose Mallow 



Calyx involucellate at the base by a row of numerous bractlets, 5-cleft. Col- 

 umn of stamens long, bearing anthers for much of its length. Styles united, 

 stigmas 5, capitate. Fruit a 5-celled loculicidal pod. Seeds several or many in 

 each cell. — Herbs or shrubs, usually with large and showy flowers. (An old 

 Greek and Latin name of unknown meaning.) 



a. Calyx herbaceous, not inflated about the capsule ; perennials 5, 



b. Shrub, with rhombic-ovate glabrous leaves 1. ff. syriacus. 



b. Herbs c. 



c. Stems and lower surfaces of leaves pubescent. 



Capsule smooth ; leaves glabrous or glabrate above. 



Corolla rose-color ; capsule depressed-globose, abruptly beaked . 2. ff. Moscheutos. 

 Corolla white, with crimson center ; capsule ovoid, gradually 



pointed Z. II. oculiroseus. 



Capsule hirsute ; leaves pubescent above. 

 Leaves minutely stellate-canescent ; capsule beaked . . . i. U. incanus. 

 Leaves looselv and coarsely stellate-tomentose ; capsule rounded 



or truncate at tip 5. ff. lasiocarpos. 



c. Stems and leaves glabrous 6. /T. militaris. 



a. Calyx bladdery-inflated, soon becoming scarious ; annual . . . . 1. H. Trionum. 



1. H. SYRIACUS L. (Shrubby Althaea of gardens.) Tall shrub, smooth; 

 leaves rhombic- or wedge-ovate, pointed, cut-toothed or lobed ; corolla usually 

 rose-color. — Established in thickets and by roadsides, N. J., Pa., and southw. 

 July-Sept. (Introd. from Asia.) 



2. H. Moscheutos L. (Swamp R.) Tall perennial (1-2.5 m. high); the 

 Stem puberulent above; leaves ovate, pointed, toothed, the lower and sometimes 



