52 MALVACEAE. (MALLOW FAMILY.) 



* * Anntials: flowers small, crowned, expanding at night. 



8. S. Antirrhina, 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 spatulatc, 

 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 lhigh. 



15. SAPONAE.IA, L. SOAPWORT. 



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. officinalis, L. Perennial; stems stout, erect, smooth; leaves ovate, 

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



Waste places. Naturalized. Stems 1 - 2 high. 



16. AGROSTEMMA, L. CORN-COCKLE. 



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

 crownless. Stamens 1-0. Styles 5. Capsule 1 -celled, 5-toothed. Annual or 

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

 gated peduncles. 



1. A. GithagO, L. Plant (1- 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. Q) 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. Stamens numerous, united 

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

 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. 



TRIBE I. M AL.VEJE. Carpels as many as the stigmas, 1 - few-seeded, disposed in a circle 

 around a central axis, separating at maturity from the axis and from each other. An- 

 thers borne at the apex of the column. 



