630 



PATAGONIAN EXPEDITIONS: BOTANY. 



branaceous, elliptical or oblanceolate, obtuse, glabrous, gradually passing 

 into a long basally dilated petiole, with chaffy hairs. Umbels subsessile ; 

 involucre 5-6-cleft, 8-i2-flowered; pedicels as long as the fruit. 



Patagonia, rare in basaltic rocks by Rio Sta. Cruz, near Lago Argen- 

 tino ; and by Carren-leofu. 



AZORELLA PATAGONICA COMPACTA Speg. 



Xerophil, having compact cushions ; leaves smaller, and more rigid than 

 the species, and entire. Umbels sessile. Habit of A. cczspitosa Cav. 

 S. Patagon., in rocks by Pan-de-Azucar, near Rio Sta. Cruz. 



14. A. PLANTAGINEA Speg. 



Laxly cespitose perennial, with densely fasciculate leaves. Petioles 

 long, all membranaceously dilated, glabrous or with marginal pectinate 

 chaffy scales; limbs glabrous, obovate or oblanceolate, membranaceous, ob- 

 tuse, entire, rarely obsoletely repandulous. Umbels acrogenous, nearly 

 concealed by the leaves. Involucre multifid, glabrous or ciliolate ; flowers 

 numerous on rather long pedicels. 



Patagon., mountains near Lago Traful. 



15. A. RANUNCULUS d'Urv. 



(Schizeilema.) Glabrous. 

 FIG. 78. 



Azorella ranunculus. Leafage, and 

 magnified flower and fruit. (From 

 Flora antarctica.*) 



(Habitat of Hydrocotyle.} 

 Falklands, by freshwater ; 



"Leaf-segments sometimes 



(Speg.) 



Stem creeping, nodose, rooting at the 

 nodes. Leaves long-petioled (25 mm.), ro- 

 tundate, 4~5-partite, the parts cuneate, trifid, 

 subsegments rounded ; petioles sheathing at 

 the base. Peduncles axillary, shorter than 

 the petioles. Involucral leaves linear subu- 

 late, longer than the pedicels, toothed on 

 both sides. Umbel 3-5-flowered. Calyx- 

 teeth obtuse. Fruit short, ovate, subterete, 

 contracted at the commissure ; mericarps dor- 

 sally convex and obtusely 3-ridged. (Fig. 78.) 



Staaten I.; Magellan; S. Fuegia. (Dusen.) 

 linear, sometimes spatulate and dilated." 



