MALVACEAE. (mallow FAMILY.) 47 



gle, or the upper ones densely spiked ; iuvolucel 3-leaved, as long as the very 

 hairy calyx ; petals yellow, oblique ; carpels 12, even, awnless. — South Florida. 

 — Stems 2° - 4° high. Flowers ^ wide. 



4. SIDA, L. 



Involucel none. Calyx angular. Styles .5 -15. Stigmas capitate. Ovaries 

 1-celled. Carpels erect, mostly 2-valved and 2-beaked at the apex, separating 

 at maturity from each other, and from the central axis. Seed resupinate, sus- 

 pended, 3-angled. Embryo curved. Eadicle superior. — Branching herbs or 

 shrubs, with chiefly undivided leaves, and small yellow, rarely red or white, 

 flowers in their axils. 



* Leaves, at least the lower ones, cordate. 

 +- Flowers dioecious, white. 



1. S. Napsea, Cav. Nearly smooth, 4° -8° high; leaves thin, long- 

 petioled, cordate-ovate, 5-lobed, acuminate, toothed or serrate ; peduncles 

 few-flowered; petals obovate ; carpels 10, acuminate. — Shady banks, East 

 Tennessee. June. 



-1— ■*-- Flowers perfect, yellow or red. 



2. S. spinosa, L. Annual, minutely pubescent; branches erect ; leaves 

 oblong-ovate, acute, serrate, the slender petioles often with a tubercular spine 

 at the base, the lower ones cordate ; stipules setaceous, half as long as the 

 petioles ; flowers single or clustered, on short erect peduncles ; carpels faintly 

 reticulated, each pointed with two erect subulate spines. — Waste places. 

 July -Sept. — Stems l°-2° high. Flowers .^' wide, yellow. 



3. S. supina, L'Her. Perennial, tomentose ; stems divided at the base 

 into slender simple a.'scending or prostrate branches; leaves all round-cordate, 

 crenate ; stipules minute ; floAvers solitary ; the peduncles reflexed in fruit ; 

 carpels downy, reticulated, almost beakle.ss. — South Florida. Oct. — Stems 

 6' -12' long; leaves i'-l' long. Flowers yellow, not half as large as in the 

 preceding. 



4. S. diffusa, HBK. Perennial; stems prostrate, hairy, 2° long; leaves 

 V long, cordate oblong, serrate; stipules setaceous; peduncles 1' long, soli- 

 tary ; flowers yellow ; carpels 5, pubescent, short-beaked. — Keys of South 

 Florida. 



.5. S. cordifolia, L. Annual, villous ; stem tall, much branched ; leaves 

 ovate, cordate, entire or angularly 3-lobed, crenate-serrate ; flowers small, 

 yellow, mostly crowded in axillary and terminal racemes; carpels 10-12, 

 shorter than the slender retrorsely scabrous awns. — Cedar Keys, Florida. 

 Introduced. Nov. — Stem 3° - 5° high. Leaves 2' - 3' long. 

 « * Leaves not rordate. 



6. S. earpinifolia, L. Nearly glabrous, erect, branching; leaves ovate- 

 lanceolate, obtuse and 3nerved at the base, serrate; stipules linear; flowers 

 axillary, the earlier solitary, the later ones clustered ; petals yellow, uneqnnlly 

 obcordate; carpels 7-12, reticulate rugose. 



Var. brevicuspidata, Griseb. Stem 10-3° high, the branches and 



