5^ MALVACK^. (mallow FAMILY.) 



* * Annuals : Jloweri small, crowned, expanding at night. 



8. S. Autirrhina, L. Stem slender, smoothish, clammy below the upper 

 joints ; leaves linear, acute, sessile, the lowest lanceolate, narrowed into a petiole ; 

 flowers panicled ; calyx smooth ; petals obcordate, rose-colored. — Dry old 

 fields, Florida and northward. May and June. — Stems 6' - 2° high, simple or 

 branched. Flowers minute. 



9. S. quinquevulnera, L. Hairy; stem branching; leaves spatulate, 

 the upper ones linear; flowers in 1-sided racemes ; calyx hairy ; petals rounded, 

 entire, pink or crimson with a paler border. — Near Charleston. Naturalized. 



— Stem 1° high. 



15. SAPOlfAIlIA, L. SoAPWOET. 



Calyx tubular, terete, 5-toothed. Petals long-clawed. Stamens 10. Styles 

 2. Capsule sessile or short-stiped, 1 -celled, or 2-celled at the base, 4-toothed at 

 the apex. — Cymes dense-flowered. 



1. S. ofQ.cilialis, L. Perennial ; stems stout, erect, smooth ; leaves ovate, 

 connate, strongly 3-ribbed ; petals crowned, white or rose-color, mostly double. 



— Waste places. Naturalized. — Stems l°-2° high. 



16. AGROSTEMMA, Ij. Cork-Cockle. 



Calyx tubular, with 5 elongated linear deciduous lobes. Petals 5, entire, 

 crownless. Stamens 10. Styles 5. Capsule 1-celled, .5-toothed. — Annual or 

 bieimial pubescent herbs, with linear leaves, and showy purple flowers on elon- 

 gated peduncles. 



1. A. GithagO, L. Plant (l°-2° high) whitened with long appressed 

 hairs ; stem forking ; petals obovate, cmarginate, shorter than the lobes of the 

 calyx. — Grain fields. Introduced. June and July. (J) — Peduncles 4' - 6' 

 long. Flowers 1' wide. 



Order 22. MALVACEAE. (Mallow Family.) 



Mucilaginous herbs or shrubs, with palmately veined alternate stipulate 

 leaves, and regular monadelphous flowers on jointed peduncles. — Sepals 

 5, united at the base, valvate in the bud, persistent, often with a calyx- 

 like involucel. Petals 5, convolute in the bud. Stanaens numerous, united 

 into a column which is continuous with the claws of the petals: anthera 

 1-celled, opening transversely. Ovaries united into a ring, or forming a 

 several-celled capsule. Styles separate or united. Seeds kidney-shaped. 

 Albumen scarce or none. Embryo large, curved, with leafy cotyledons. 

 Pubescence commonly stellate. Pollen grains hispid 



Synopsis. 



Tbibe I. VlXli'VEIE. — Carpels as many as the stigmas, 1 -few-seeded, disposed in a circle 

 around a central axis, separating at maturity from tlie axis and from eacli other. An- 

 thers borne at the apex of the column. 



