MACLOSKIE : POLEMONIACE/E. 667 



i. EVOLVULUS FALCATUS Griseb. 



Low undershrub, many-stemmed, 10 cm. high, leafy, silvery. Leaves 

 subsessile, elliptical-lanceolate, falcate, acuminate (or the lower elliptic). 

 Pedicels axillary, very short, i -flowered. Flowers blue, half as long as 

 the leaf. Sepals ovate-lanceolate, acuminate, half as long as the corolla. 



(Argentina) ; N. Patagon., by Rio Negro. 



2. E. INCANUS Pers. 



Cespitose, procumbent perennial, scarcely 30 cm. long. Leaves ovate- 

 oblong, crowded, mucronulate, silky on both sides, sessile, 6-8 mm. long. 

 Peduncles 4 mm. long, i -flowered. Sepals linear, 2.5 mm. long, silky. 

 Corolla tubular, 5 times as long as calyx. 



(Brazil) ; Patagon., by Golfo de San Jorge. 



4. CONVOLVULUS Linn. p. p. (Calystegia R. Br., as a separate 



genus.) Bindweed. 



Ovary i-2-celled, 4-seeded. Stigmas 2. Bracts 2, close to the calyx, 

 or none. 



Species 7-8, in temperate and subtropical regions. 



C. SEPIUM L. (Calystegia sepium R. Br.) 



Stem twining, angled. Leaves large, sagittate, acuminate, glabrous, 

 petiolate. Peduncles angular, i -flowered. Corolla campanulate, 5 cm. 

 long, often snowy. Bracts large, close to the calyx. 



(Eurasia; E. United States; Australia to New Zeal.); W. Patagon., 

 Chonos Archip. 



Family 94. POLEMONIACE^:. Phlox Family. 



Herbs, with alternate, exstipulate leaves (or lower leaves opposite), and 

 regular, 5-merous, sympetalous flowers. Stamens 5, alternate with the 

 corolla-lobes, and inserted on the tube, often protruding. Ovary supe- 

 rior, 3-celled, with simple, 3-cleft style. Fruit capsular ; seeds sometimes 

 winged, sometimes covered with mucilage, and emitting spiral tubes when 

 wetted ; with endosperm. 



Species 200, most in W. Amer., a few in temperate Eurasia. 



