1925] PALMER, SYNOPSIS OF NORTH AMERICAN CRATAEGI 121 



raleighensis Ashe. (?) Color of anthers unknown. Fruit characters as 



given above. 



diameter. 



green 



trianthophora Sarg. Fruit obovoid, light orange-red, pale dotted, 8-12 

 mm. diameter. 



uniflora Moench. Fruit subglobose, yellow or greenish-yellow, 10-14 



mm. diameter. 



XVIII. Aestivales 



Anthers rod, rose or purple in this group 



A. Young leaves and branchlets glabrous or nearly so 



aestivalis T. & G. Fruit short-oblong or subglobose, scarlet, 12-15 mm. 

 diameter. 



fruticosa Sarg. Fruit subglobose, light orange-red, pale dotted, about 



10 mm. diameter. Young leaves sometimes slightly villous. 



monantha Sarg. Fruit subglobose or short-oblong, cherry-red, 8-10 mm. 

 diameter. Young leaves sometimes slightly villous. 



AA. Young leaves and branchlets villous 



fruticosa Sarg. Young leaves usually nearly glabrous. Fruit characters 

 as given above. 



monantha Sarg. Young leaves sometimes slightly villous. Fruit char- 

 acters as given above. 



opaca Hook. Fruit depressed-globose, scarlet, pale dotted, 15-20 mm. 

 diameter. 



rufula Sarg. Fruit subglobose, scarlet, about 12 mm. diameter. 



XIX. Brachyacanthae 



Anthers yellow; stamens about 20 



brachyacantha Sarg. & Engelm. Fruit subglobose or obovoid, bright 



blue (straw-color in var. leucocarpa Sarg.), 12-15 mm. diameter, 

 saligna Greene. Fruit globose, blue-black, 5-8 mm. diameter. 



XX. Douglasianae 



A. Anthers pink, rose or purple 

 B. Stamens about 10 (5-10) 



C. Corymbs and leaves glabrous or nearly so at flowering time 



cerronis Nelson. Fruit globose, red, 8-10 mm. diameter, 

 erythropoda Ashe. Fruit subglobose, red or orange and red, 7-8 mm. 

 diameter. 



Douglasii Lindl. Fruit short-oblong, black (chestnut-color in f. badia 

 Sarg.), 10-12 mm. diameter. Corymbs sometimes slightly villous. 

 Stamens sometimes 20. 



CC. Corymbs and leaves villous at flowering time 



Douglasii Lindl. Corymbs usually glabrous. Fruit characters as given 

 above. Stamens sometimes 20. 



