MALVACEAE (MALLOW FAMILY) 669 



* * Involucel none; calyx 5-parted; carpels strongly rugose. 



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

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

 the upper 5-7-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. NAPA^ilA [Clayt.] L.. Glade Mallow 



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

 staminate destitute of pistils, with 16-20 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 vdiri), 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. KOSTEL^TZKYA 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. virglnica (L.) Presl. Eoughisih-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. HIBfSCUS 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 tbe capsule ; perennials 6. 

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



h. '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. H. Mosch&utos. 

 Corolla white, with crimson center; capsule ovoid, gradually 



pointed • . Z. H, oculiroeeus. 



Capsule hirsute ; leaves pubescent above. 

 Leaves minutely stellate-canescent ; capsule beaked , . . i. H. incarmte. 

 Leaves loosely and coarsely stellate-tomentose ; capsule rounded 



or truncate at tip . . 5, £'. lasiocarpos. 



c. Stems and leaves glabrous &. H. militaris. 



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



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

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

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

 July-Sept. (In trod, from Asia.) 



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

 9(em puberulent above ,• leaves ovate, pointed, toothed, the lower and sometime? 



