﻿154 Wooton: A new Southwestern Rose 



spiny, the stellate trichomes being replaced by numerous fine re- 

 curved spines. The leaflets of these specimens vary from triangular 

 to obovate, and from finely pubescent to perfectly glabrous. The 

 teeth are generally more numerous and the margin is more or less 

 supplied with sessile glands. 



The Fresnal specimen is perfectly glabrous on leaves and 

 stems, but the stems are very spiny and bear numerous stipitate 

 glands, while the margins of the leaflets and stipules are very 

 glandular ; the leaflets are usually five in number and obovate. 

 The absence of stellate trichomes, the more numerous spines, the 

 generally more numerous, larger, and differently shaped leaflets, 

 and the glandular character of this plant would seem to be sufficient 

 to establish a well marked variety at least, but the material ex- 

 amined seems to me to be too scanty to warrant such action. 



Explanation of Plate 335. 



Rosa stellata Wooton. 



Fig. 1. Branch showing bud and flower, natural size. Organ Mountains 



Fig. 2. Young growing branch, natural size. Organ Mountains. 



Fig. 3. Single leaf, natural size. Organ Mountains. 



Fig. 4. Section of flower, natural size. Organ Mountains. 



Fig. 5. Stamen and pistil, X 4- Organ Mountains. 



Fig. 6. Leaf and spine, natural size. White Mountains. 



Fig. 7. Fruit, natural size. White Mountains. 



Fig. 8. Achenes, X 2 - White Mountains. 



Fig. 9. Three forms of trichomes, magnified. 



