54 malvace.t:. (:\iai.low family.) 



Florida, and westward. May - September. — Stems 1° hi^'h. Flowers purple, 

 2' wide, on peduncles which are sometimes 1° long. 



3. C. aleaeoides, Gray. Strigose-pubescent ; stems slender (1° high); 

 lower leaves triangular-cordate, incised ; the upper 5 - 7-parted, laciniatc, the 

 uppermost divided into linear segments ; flowers corymbose, on slender j>edun- 

 cles (rose-color or white) ; involuccl none ; carpels obtusely beaked, crested and 

 strongly wrinkled on the back. (Sida alcasoides, Miclix.) — Barren oak lands, 

 Tennessee. 



3. MALVASTRUM, Gray. 



Involucd 1-3-lcaved or none. Styles 5-20. Stigmas capitate. Car])cls 



beaked or beakless, 1 -seeded. Seed ascending. Embryo curved or annular. 



Radicle inferior. — Herbs or shrubby plants, rough with rigid hairs. Flowers 

 yellow. 



1. M. tricuspidatum, Gray. Perennial or shrubby; stem branching; 

 leaves ovate or oblong-ovate, serrate, acute, pctioled ; stipules lanceolate ; flow- 

 ers in leafy spiked racemes ; petals obliquely truncated ; carpel.i 10-12, more or 

 less distinctly 3-toothed or awncd at the apex. — South Florida. — Stems 1° high. 

 Involucel 3-leaved. 



2. M. angustum, Gray. Annual ; stem erect, br.mching ; leaves lanceo- 

 late, sparingly serrate, short-petioled ; stipules bristle-like ; flowers axillar}-, 

 mostly solitary ; involucel setaceous, 2 -3-leaved; carpels 5, circular, awnlcss, 

 at length 2-valved. (Sida hispida, Pursh. '' Ell. ?) — South Carolina and west- 

 ward. — Stems G'- 12' high. Calyx enlarged in fruit. 



4. SIDA, L. 



Involucel none. Calyx angular. Styles .5 - l.*). Stigmas capitate. Ovaries 

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

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

 pended, 3-anglcd. Embryo curved. Radicle superior. — Branching herbs or 

 shrubs, with chiefly undivided leaves, and small yellow or reddish flowers in 

 their axils. 



* Leavfis, at least the lower ones, cordate. : carpels 5. 



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

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

 the ba.sc, the lower ones cordate; stipules setaceous, half as long as the petioles ; 

 flowers single or clustered, on short erect peduncles ; caipcls faintly reticulated, 

 each pointed with two erect subulate spines. — Waste places, Florida and north- 

 ward. July -September. — Stems l''-2° high. Flowers i' wide, yellow. 



2. S. SUpina, L'ller. Perennial, tomentose ; stems divided at the base 

 into flcndcr siin[)lo ascending or prostrate branches ; leaves all round-cordate, 

 crenafc, rounded at the ai)ex, hoary beneath ; the slender i)etioles spineless nt 

 tlmbase; stipules minute, subulate, deciduous; flowers solitary; the j)edunclcs 

 half as long n^ the petioles and reflexed in fruit ; carpels downy, reticulated, 

 almost hcaklcss, opening irregularly near the membrainiecous base. (S. ovnta, 

 Cav. S. procumbcns, Sivarlz.) — South Florida. October. — Stems C'-12' 



