458 PATAGONIAN EXPEDITIONS : BOTANY. 



Species more than 200, mostly N. Temp, and Arctic ; a few in the 

 Himalayas, China, Orient, Algeria, the Andes and Patagonia. 



KEY TO THE SPECIES. 



A. Scape i -flowered. 

 b. Stamens 5. 



c. Leaves orbicular-spatulate, 3-5-nerved. alboffiana. 



c2. Leaves narrow-linear-spatulate, I -nerved, apically bicuspidate. Petals 5-10. 



bicuspidata. 

 b2. Stamens normally 10. Petals long. 



c. Radical leaves trifid ; cauline undivided, linear. ctzspitosa. 



cz. Leaves spatulate, rarely 3-lobed. 5. ccespitosa magellanica. 



A2. Flowers corymbose to paniculate. Lower leaves cuneately 3-cleft ; upper often entire. 

 Stigmas large. cordillerarum. 



i. SAXIFRAGA ALBOFFIANA F. Kurtz. 



Low, green, glabrous. Roots numerous, long and slender, stolonifer- 

 ous. Stems 1-2 cm. high, branching little, apically rosulate. Flowering 

 stems higher, few-leaved, i -flowered, with rhomboid, ovate bracts. Leaves 

 orbicular-spatulate, entire, with 3-5 nerves converging upwards. Petals 

 2-3, unequal, lingulate, whitish, minute. Stamens 5, shorter than the 

 calyx. Seeds reniform. 



Fuegia at Ushuaia, alpine; W. Magellan, Desolation I. (Dusen). 



2. S. BICUSPIDATA Hook. f. 



Laxly cespitose, glabrous. Stems decumbent, slender, sparingly 

 branching, leafy. Leaves 4-8 mm. long, narrow-linear-spatulate, 



i -nerved, apically bicuspidate. Peduncle axillary, 

 naked, i -flowered. Calyx-lobes apically bifid. Sta- 

 mens $. Petals 5-i(-o). Calyx semisuperior. 



W. Magellan, at Puerto Angusto (Dusen) ; S. 

 Fuegia, Patagon. (Of habit of S. oppositifolia L. of 

 Greenland, except its scattered leaves (Fig. 73). The 

 bicuspidata. figure in Flora Antarct. incorrectly gives its leaves as 

 Youngshoot showing the opposite x By Hatcher in Cordilleras of S. Patagon. 



scattered, bicuspidate rj ' J 



leaves. (Original.) Determined by the Kew Herbarium, with the follow- 



ing note: "Add to description in Fl. Antarct. ii. 

 281, Petalum unicum, oblongo-lanceolatum, acutum, 2 mm. longum, 0.5 

 mm. latum. T. A. Sprague, Nov. 30, 1901." 



