ORDER XXXIII. MALVACEAE. 259 



Genus IV.— MALVAVIS'CUS. Dill. 15—12. 

 (From malva, mallows, and viscus, glue.) 



Calyx deeply 5-cleft, surrounded by a many-leaved involucel. 

 Petals erect, convolute. Stigmas 10. Carpels 5, baccate, 1- 

 6eeded, united or distinct. 



1. M. florida'nus, (Nutt.) A small shrub, hirsute. Leaves cordate- 

 ovate, hispid, crenately serrate, 1 — 2 inches long. Peduncles axillary ; 

 involucel 8 — 9-leaved. Flowers nodding, solitary. — Scarlet. If. East 

 Florida. 



Genus V.— GOSSYP'IUM. L. 15—12. 

 (From an Arabic word which signifies soft.) 



Calyx cup-shaped, obtusely 5-toothed, surrounded by a 3- 

 leaved involucel, cordate, deeply toothed or incised. Stigmas 

 3 — 5. Capsule 3 — 5-celled ; dehiscence loculicidal, many- 

 seeded. Seeds imbedded in the cotton. Cotton. 



1. G. iierba'ceum, (L.) Stem smooth, pubescent. Leaves usually 3 — 

 5-lobed, pubescent; lobes sometimes rounded, acuminate, mucronate. 

 Flowers yellowish-white, turning to red when old. — Native of India, 

 Africa, and S}-ria. Common Cotton. 



2. G. Bar3aden'se, (L.) Leaves 3 — 5-lobed, with 3 glands beneath. 

 Flowers large, with a purple spot at the base of each petal. — Yellowish, 

 finally turning red. Native of Barbadoes. Sea-Island Cotton. 



Fourteen species of cotton are described by authors, but many of them probably 

 are only varieties. 



Genus VI.— ABUTILON. Dill. 15— 12. (Sida Abutilon of Ell.) 

 (The Greek for the Mulberry, applied to this from the resemblance of its leaves.) 



Calyx 5-cleft, naked. Style multifid. Ovary 5 or many- 

 celled, 3 — 5 seeds in a cell. 



1. A. Avicen'n.e, (Gaert.) Stem 2 — 4 feet, with spreading branches. 

 Leaves broad-cordate, velvety, tomentose, acuminate, crenately toothed. 

 Carpels generally 15, 3-seedcd, birostrate, hairy. Peduncles solitary or 

 in pairs, 1 — many-flowered. — Orange-yellow. 0. Introduced. Koad- 

 sides. 



Genus VII.— SI'DA. L. 15—12. 

 (The Greek name of a plant resembling the Althaea.) 



Calyx 5-cleft, angled, without an involucel. Ovary 5 or 

 many-celled, with a single ovule in each cell. Capsules con- 

 sisting of 5 or more carpels, commonly 2-valved. 



1. S. spino'sa, (L.) Stem branching, finely pubescent. Leaves alter- 

 nate, cordate-ova., or broad-lanceolate, serrate. Stipules setaceous, 

 with a spinose tubercle at the base. Flowers axillary, solitary, on short 

 peduncles. Calyx pubescent. Petals obovate. Stigma 5-cleft. Car- 

 pels 5, easily separated when mature, 2-lobed. — Yellow. 0. May- 

 July. Sandy soils. 1 — 2 feet. 



