496 PATAGONIAN EXPEDITIONS : BOTANY. 



axillary, 4-8-flowered racemes. Calyx silky, gibbous, its mouth oblique. 

 Standard short, obtuse, scarcely reflected. Legume 3-12 cm. long, its 

 joints oblong, 4-angled and 4-winged. Seeds oblong, pale yellowish 

 brown ; cotyledons very consolidated. 



A large and a small variety in New Zealand, abundant; the small 

 form is also common in Juan Fernandez and S. Chili. 



10. ANARTHROPHYLLUM Benth. 



Branching, somewhat silky, rigid shrubs. Leaves small, entire or 3- 

 cleft, mostly spinescent, united below with the stipules into a ring. 

 Flowers solitary at the ends of the branches, reddish-yellow. Calyx tubu- 

 lar, its 2 upper lobes free ; its 3 lower lobes united into a lip. Wings 

 oblong. Keel obtuse, once plaited on each side. Stamens all connate in 

 a sheath, open above ; anthers alternately long-basifixed, and short-versa- 

 tile. Ovary subsessile, ovules few. Style incurved, glabrous, with capi- 

 tate stigma. Legume obliquely ovate-cuspidate, or narrow, compressed. 



Species 8, extra-tropical S. Amer. 



* 



KEY TO THE SPECIES. 



The species with petiolate, silky, trisect leaves, having spinose, subulate, segments are chiefly 

 as by O. Kuntze : 



a. Petals pilose externally, exceeding the calyx. 

 b. Leaf-segments, 5-10 mm. long. 



c. Calyx, lower lip tridentate. bergii Hier. 



c2. Calyx, lower lip trisect. rigidum Hier. 



62. Leaf-segments 10-20 mm. long. 



c. Calyx, lower lip tridentate. Petals subequal, erect. (Genista elegans.) 



elegans Ph. 

 C2. Calyx, lower lip trisect, with subulate segments. 



d. Petals orange, unequal, wings and keel straight, about twice as long as the vexil- 

 lum. morenonis O. Ktze. 



d2. Petals yellow, subequal, keel deflex. toninii O. Ktze. 



3. Leaves and stipules ovate, mucronate, spinulose, silky. Flowers yellow. 



subandinum Speg. 



a2. Petals glabrous externally, scarcely exceeding the calyx. beaufilsii O. Ktze. 



#3. Standard broad, only half as long as the wings. desideratum. 



The genus is divisible into two subgenera: (i) Amerophyllum, with 

 entire leaves ; (2) Trimerophyllum, with trifid or tripartite leaves. 



