484 PATAGONIAN EXPEDITIONS : BOTANY. 



x 



29. AC^NA SPLENDENS Hook. & Arn. 



Woolly-silky perennial. Root simple. Stem short, stout, covered by 

 imbricating stipules. Leaves obovate ; leaflets 7-9, obovate, 1-2 cm. long, 

 sessile, apically many-toothed ; hairs bronze-colored. Scape with apicu- 

 late, interrupted spike. Fruit oblong, with many spreading, long spines 

 (glochidia). 



(Chili) ; N. Patagon., by the Upper Limay, "apparently brought down 

 by streams from the Andes." (J. Ball.) S. Patagon., by Rio Sta. Cruz; 

 Magellan; at Punta Anegada. E. Fuegia. (Dusen.) 



30. A. TEHUELCHA Speg. 



Small, cespitose, silky. Leaves oblong, spatulate, pinnatipartite ; the 

 parts 2-5-cleft, and subdivisions oblanceolate. Flowers dimorphous, 

 females concealed in axils of leaves ; hermaphrodites seated on scapes. 

 Fruit winged, with spines on margins, glochidiate on the angles, small on 

 the faces. 



S. Patagon., by Rio Chico and Lago Argentine. " Bark woody, 

 densely coated with blackish scales (remains of old leaves)." 



f 



31. A. TENERA Alboff. 



Low, corticated, with clear, green leaves. Rhizome long, rough, 

 branching, stoloniferous. Leaves radical, long-petioled, narrow-oblong. 

 Leaflets 9-13, ovate-orbicular, membranous, pectinate-emarginate. Scape 

 with small, globose head (7-5 mm. diam.) Calyx glandular. Spines 5. 



Fuegia. 



32. A. TRIFIDA Ruiz. & Pav. 



Silky-villous. Caudex woody ; stem erect, i meter high. Leaves 

 mostly crowded at base. Leaflets about 6 pairs, oblong-ovate, 48 mm. 

 long, pinnatifid into 3 or more segments. Flowers greenish, in a cylin- 

 drical spike, some remote. Calyx-lobes exceeding the tube. Anthers 

 dark-purple. Fruit 3-4-angled, angles armed with 2-4 stout spines, and 

 smaller spines between. 



(Calif, to Chili) ; by Hatcher on pampas near Coy Inlet, S. Patagon. 



Torrey & Gray referred the Californian plant to A. pinnatiflda; but 

 see Botany of Calif., by Brewer & Watson, i, p. 186. 



