54 MALVAOK-K. (MAI,^O^V lAMIl.Y.) 



Florida, and wostwiinl. May-Scptonil)or. — Stems 1° liigli. Flowers purple, 

 2' wide, on piilmicles which are soinetiinos 1° long. 



3. C. alcseoides, Gray. Strigosc-puhesceiU ; stems slender (1° liigli) ; 

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

 uppermost divided into linear segments ; flowers corvmlwsc, on slender pedun- 

 cles (rose-eolor or white) ; involueel none ; carpels obtusely beaked, crested and 

 strongly wrinkled on the back. (Sida alcaioides, Michx.) — Barren oak lands, 

 Tennessee. 



3. MALVASTRUM, Gray. 



Involueel l-3-leaved or none. Styles 5-20. Stigmas capitate. Carpels 



beaked or beakless, 1-seeded. Seed ascending. Emliryo currcd or annular. 



Radicle inferior. — Herbs or shrubby plants, ix)ugli Mith rigid hairs. Flowers 

 yellow. 



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

 leaves ovate or oblong-tjvatc, serrate, acute, pctioled ; .'itipules lanceolate ; flow- 

 ers in leafy spiked racemes ; petals obli(iuely truncated ; carpels 10-12, more or 

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

 Involueel 3-leaved. 



2. M. angUStum, Gr.ay. Annual ; stem erect, branching ; leaves lanceo- 

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

 mostly solitary ; involueel setaceous, 2 -3-leaved; carpels 5, circular, awnless, 

 at length 2-vaIvcd. (Sida bispida, Pursh. ■? Ell. ?) — South Carolina and west- 

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



4. SIDA, L. 



Involueel none. Calyx angular. Styles .5 - 1.5. Stigmas capitate. Ovaries 

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

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

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

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

 their axils. 



* Lenvfx, at least, the louder onex, ronhite ; carpeh 5. 



1. 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 sulnilate spines. — Waste ])Iaces, Florida and north- 

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



2. S. supina, L'llcr. Perennial, tomentosc ; stems divided at the base 

 into slender simple ascending or prostrate branches ; leaves all round-cordate, 

 crcnatc, rounded at the apex, hoary beneath ; the slender petioles spineless at 

 the base ; stipules minute, subulate, deciduous ; flowers solitary ; the peduncles 

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

 almost beakless, opening irregularly near the membranaceous base. {S. ovata, 

 Cav. S. procumbens, Swariz.) — South Florida. October. — Stems 6'- 12' 



