456 PATAGONIAN EXPEDITIONS'. BOTANY. 



Family 48. CRASSULACE^E. Stonecrop Family. 



Mostly succulent herbs or shrubs, with simple exstipulate leaves and 

 cymose or solitary regular and perfect, 4-5-merous flowers. Stamens 

 hypogynous, as many as the sepals, or twice as many. Floral symmetry 

 otherwise complete. Seeds in the follicles numerous, with fleshy endosperm. 



Species 300, widely dispersed. 



CRASSULA Linn. 



Leaves opposite, entire, mostly glabrous. Flowers symmetrically 4-5 

 merous. Calyx and stamens shorter than the corolla. Petals free or 

 united at base. Follicles distinct. 



Species 120, most in S. Africa and Chili ; some in Eur. and N. Amer., 

 Orient, Austral, and N. Zeal. 



The Patagonian species are chiefly of the section Tillcea, taken by some 

 as a genus, having sagittate leaves. 



I. C. MAGELLANICA (Wild.). 



Stem creeping. Leaves oblong, imbricate. 

 Magellan. 



2. C. MOSCHATA Forst. (d'Urv. sub Bulliarda ; TillceaDC.}. 



Small, creeping, aquatic annuals, with opposite, succulent, ovate-ob- 

 long, connate leaves ; and sessile 4-inerous flowers in the upper axils. 



N. Patagon., at Rio Negro ; E. and W. Magellan ; Fuegia to Cape 

 Horn; Falklands ; also in Kerguelen-land ; "always growing near the 

 sea, where streams enter." 



3. C. PEDUNCULARIS SUCC. 



Stem erect, simple. Leaves subconnate, lanceolate, acute. Pedicels 

 axillary, solitary, twice or three times as long as the leaves. Carpels 

 truncate at apex. 



(Moist regions about Buenos Aires and Monte Video) ; N. Patagon., 

 by Rio Negro. 



4. C. TILL^EA (Miers) ( Tillcea minima Hook. & Arn.). 

 Annual, with slender, subsimple stem, naked below. Leaves ovate, 

 connate, acute or subobtuse, thickish. Flowers subsessile, and peduncled, 



