100 



ROSACEAE. 



COTONEASTEB. 



(Family Rosaceae). 



Shrubs: deciduous or evergreen. 

 Twigs slender, subterete: pith 

 small, rounded, continuous. Buds 

 solitary, sessile, ovoid or oblong, 

 the 2 outer scales mostly parted 

 and exposing the hairy interior. 

 Leaf-scars alternate, minute, ellip- 

 tical, raised: bundle-trace 1, in- 

 distinct: stipules rather persistent 

 on the leaf-cushion, leaving nar- 

 row indistinct scars when fallen. 

 Leaves when present simple, en- 

 tire. Fruit, often present, small 

 drupe-like pomes with often in- 

 curved sepals. 



Cotoneasters are among the 

 favorite shrubs of Great Britain, 

 but the species that prove so ef- 

 fective in an insular climate are 

 rarely capable of successful cul- 

 tivation under continental con- 

 ditions even though not subjected to excessively low winter 

 temperatures. A considerable number of those most success- 

 fully grown in the United States are native to countries of 

 relatively dry climate, and some of the best of them are of 

 recent introduction. 



The few winter-character references are: G. integerri- 

 mus (or vulgaris). Bosemann, 78; Fant, 19; Ward, 1:231, 

 f. 118; Willkomm, 6, 7, 32, f. 42. C. nigra and C. tomentosa. 

 Schneider, f. 151. 



1. Evergreen: low and spreading. 2. 

 Deciduous: larger and mostly erect. 3. 



