MACLOSKIE I MALVACEAE. 573 



KEY TO THE SPECIES. 



A. Leaves broad-ovate to cordate, with pinnatifid segments. 

 b. Fruit glabrous. 



c. Upper leaves stalked. Flowers blue. ameghinoi. 



c2. Upper leaves nearly sessile. Flowers rose-lilac, showy. chubutensis. 



b. Fruit laxly-hairy. Upper leaves nearly sessile. Petals long, cyaneous. tehuelches. 



Az. Leaves serrate. 



b. Petals not large, glabrous. hastata. 



b2. Petals twice as long as the calyx, hairy below- leprosa. 



A 3. Leaves crenate. 



b. Subrotund -cordate, coarsely crenate. macrodon. 



b2. Reniform-cordate, white-stellate. Flowers yellow to coppery. obliqua. 



1. SlDA AMEGHINOI Speg. 



Perennial ; stellate-hoary ; creeping or erect. Leaves remote, broad- 

 ovate to cordate, 3-partite ; their segments pinnatifid, obtuse. Petiole as 

 long as the blade in upper leaves ; twice as long in lower. Stipules tri- 

 angular to ovate. Flowers subsolitary in the upper axils. Peduncles 

 jointed above the middle ; not bracted. Calyx 5-cleft half-way ; its lobes 

 subacute. Corolla slighty longer, glabrous, blue. Fruit conoid-hemi- 

 spherical, glabrous, i2-carpeled. 



" Pretty. Near Cristaria, but with wingless carpels." 

 S. Patagon., dry rocky places near Chonkenk-aike, on Rio Chico ; at 

 Golfo de San Jorge. 



2. S. CHUBUTENSIS Speg. 



Arcuate-erect, pale green, perennial ; all the hairs minute-stellate. 

 Leaves remote, lax-hairy both sides ; limb broad-ovate-cordate, or sub- 

 orbicular, 3-5-partite, the segments oblanceolate, pinnatifid or trifid, 

 lower petioles twice as long as the limb ; uppermost very short. 



Stipules lanceolate. Flowers erect, becoming cernuous, solitary in the 

 upper axils. Pedtmcle jointed upwards, bractless, much shorter than its 

 subtending leaf. Calyx hispid, 5-cleft, ebracteolate ; lobes ovate, acute. 

 Corolla glabrous, large, rose-lilac. Fruits hemispherical-conoid, glabrous, 

 i6-carpellate. 



Patagon., by Rio Chubut, and Golfo de San Jorge. 15-50 cm. high. 



3. S. HASTATA S. Hil. 



Prostrate, branching perennial ; stems flattish upwards. Stellate and 

 lax hairs intermingled. Leaves petiolate, oblong to broad-elliptical, or 



