MALVACEAE (MALLOW FAMILY) 569 



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



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

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

 the upper 6-7-parted, laciniate, the uppermost divided into linear segments ; 

 flowers rose-color or white, corymbose, on slender peduncles. Barren oak 

 lands, 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 vdwv}, a 

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



1. N. diolca 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.) Presl. Roughish-hairy perennial, 6-12 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 6. 



b. Shrub, with rhombic-ovate glabrous leaves 1. H. 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. Moscheutoa. 

 Corolla white, with crimson center; capsule ovoid, gradually 



pointed 8. H. oculiroseus. 



Capsule hirsute ; leaves pubescent above. 



Leaves minutely stellate-canescent ; capsule beaked . . . 4. H. incanus. 

 Leaves loosely and coarsely stellate-tomentose ; capsule rounded 



or truncate at tip 5. H. lasiocarpos. 



c. Stems and leaves glabrous 6. ff. militaris. 



a. Calyx bladdery-inflated, soon becoming scarious ; annual . . . . 7. H. Trionum. 



1. H. SYR.IACUS 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 



