462 PATAGONIAN EXPEDITIONS I BOTANY. 



KEY TO THE SPECIES. 

 A. Leaves narrow. Flowers chiefly axillary. 



b. Leaves linear. Stems procumbent. Racemes long. uliginosa. 



b2. Leaves linear-lanceolate. Branches glabrous. alpina. 



3. Leaves small, lanceolate, serrate. Branches winged and ciliate. pterocladon. 



4. Leaves small, spatulate-lanceolate, serrulate. Young branchlets angular. 



rose a. 

 A2. Leaves spatulate-obovate. Flowers solitary, terminal. 



b. Petals long and narrow. serrata. 



b2. Petals obovate. Old leafless branches spinelike. virgata. 



A$. Leaves elliptic-obovate, crenate-serrate, large. Flowers large. macrantha. 

 A^. Leaves mostly obovate. 



b. Flowers terminal, solitary. Glabrous shrub. berberidifolia. 



b2. Flowers terminal, in 2-7-flowered racemes, red. rubra. 



b$. Flowers in terminal panicles, pink. Branches pubescent. littoralis. 



64. Flowers few in panicles ; pedicels and calyx glandular, red. rahmeriobovata. 



5. Flowers crowded on branchlets. Glabrous shrub. carmelita. 



I. ESCALLONIA ALPINA Poepp. & Endl. 



Undershrub. Branches glabrous. Leaves linear-sublanceolate, acumi- 

 nate both ways, rarely serrate, crowded, 1 7 by 30 mm. Flowers solitary 

 on short pedicels in the upper axils, aggregate to an ovate raceme. 

 Calyx-limb 5-cleft, sinuses obtuse, lobes acute. Petals obovate, with 

 obscure pinnate venation, shortly clawed. 



(Mts. of Chili) ; Patagon. 



2. E. BERBERIDIFOLIA H. B. & K. 



Glabrous with spreading branches. Leaves obovate, rather obtuse, 

 crenulate-toothed, reticulately venous. Flowers terminal, solitary. Calyx- 

 lobes entire. Petals subspatulate. 



(Andes of Peru, etc.); S. Patagon., by Lago Argentine; Chubut, in 

 elevated shrubberies. 



3. E. CARMELITA Meyen. 



Glabrous ; profusely branching. Leaves obovate-elliptical, subacute, 

 serrulate. Flowers crowded in small, flowering branchlets. Petals oboval, 

 with long claws. 



(Chili); Patagon., Chubut, in mountain shrubberies. Sterile specimens 

 having ends of branches mostly strobilaceously thickened. 



4. E. LITTORALIS Phil. 



Stem 5 meters tall, branches erect, the younger pubescent. Leaves 

 obovate, obtuse or acute, attenuate-petiolate, serrate or subcrenate, res- 



