574 PATAGONIAN EXPEDITIONS I BOTANY. 



suborbicular, base broadly cuneate, 5-nerved, serrate. Flowers solitary 

 in the axils, long-pediceled. Calyx large, plicate-pentagonal, cleft half- 

 way. Petals slightly longer, obovate ; glabrous. Carpels 10-13, apex 

 elongating, at length dehiscing. 



(Argentina) ; in meadows near Bahia de San Bias. 



4. SIDA LEPROSA (Ort.) Schum. 



Perennial, with woody base ; many-stemmed, branching below, with 

 scaly indumentum. Leaves petiolate, the lower suborbicular, basi-cor- 

 date or truncate, serrate upwards, pedately 5-nerved. Stipules narrow. 

 Flowers solitary in the axils, pediceled, sometimes with an accessory 

 branchlet. Calyx large-campanulate ; lepidote to stellately tomentose, 

 divided half-way into acute, triangular lobes ; with 3 shorter bracteoles. 

 Petals twice as long as calyx, obovate, ciliolate-margined half-way, pilose 

 beneath. Ovary depressed, 6 y-lobed. Styles long, connate half-way. 

 Carpels rostrate, scarcely dehiscing. 



(Cuba, Argentina, a var. in N. Amer.) ; N. Patagon., at Carmen de 

 Patagones. 



5. S. MACRODON DC. 



Hirsute. Leaves subrotund-cordate, coarsely crenate. Peduncles soli- 

 tary, i -flowered, exceeding the petioles. Carpels 10, not beaked. 

 (Brazil); N. Patagon., by Rio Negro. 



6. S. OBLIQUA Nutt. (S. sulfurea A. Gray.) 



White-stellate. Stems prostrate. Leaves reniform, cordate, short- 

 petioled, lobed, crenate-dentate, silvery above. Peduncles solitary, axil- 

 lary, shorter than the leaves. Involucre of 3 narrow bracteoles. Petals 

 yellow, turning coppery. 



N. Patagon., by Rio Negro. 



7- S. TEHUELCHES Speg. 



Perennial, green to silvery, all the hairs minutely stellate. Stems sev- 

 eral from the root-crown, subsimple, fistulose, subrigid. Leaves remote, 

 silvery green, broad ovate-subcordate or suborbicular, 3-5 parted ; seg- 

 ments from the middle, ovate or lanceolate, pinnatipartite. Petioles of 

 lower leaves puberulous, often one third longer ; the uppermost short or 



