376 TKEES OF NORTH AMERICA 



middle, with glandular teeth, nearly fully grown when the flowers open about the 

 10th of May, and then membranaceous and lustrous above, with occasional short 

 scattered pale caducous hairs along the upper side of the midribs, and at maturity 

 thin and firm, dark green and lustrous above, pale yellow-green below, about 1^' 

 long and 1' wide, with slender light yellow midribs and about 4 or 5 pairs of thin 

 primary veins; their petioles more or less winged above, glandular when they first 

 appear, with minute dark glands, \'^' long; on vigorous leading shoots frequently 

 divided at the apex into 2 or 3 pairs of short acute lobes, and often 3' long and 

 2' wide. Flowers ' in diameter, on slender pedicels, in many-flowered compact 

 corymbs; calyx-tube narrowly obconic, the lobes lanceolate, acuminate, entire or 

 obscurely and irregularly glandular-serrate; stamens 10; anthers small, pale yellow; 

 styles 2 or 3. Fruit ripening and falling at the end of September, on slender pedi- 

 cels ^' I' long, in few-fruited drooping clusters, short-oblong, full and rounded at 



the ends, bright scarlet, marked by occasional dark dots, \' long; calyx-tube promi- 

 nent, with closely appressed lobes often deciduous before the fruit ripens; flesh thin, 

 dry and mealy; nutlets 2 or 3, prominently ridged on the back, with broad rounded 

 ridges, about T \' long. 



A tree, often 30 high, with a trunk 18' in diameter, stout wide-spreading branches 

 forming a symmetrical round-topped rather open head, and brauchlets occasionally 

 armed with scattered thin straight chestnut-brown spines l'-2' long. 



Distribution. Open woods on bluffs of the Mississippi River, in South St. Louis, 

 Missouri. 



**Stamens 20. 



-i- Anthers rose color. 



10. Cratcegus Bushii, Sarg. 



Leaves obovate, broad and rounded or acute at the apex, or elliptical and acute, 

 gradually narrowed from near the middle and cuneate and entire at the base, and 

 coarsely serrate above, when they unfold dark green above, pale below and villose, 

 with short white hairs, on both sides of the midribs and veins, nearly fully grown 

 when the flowers open at the end of April, and at maturity coriaceous, lustrous, 

 glabrous, !'-!' long, ^'-1' wide, with stout yellow midribs and few slender promi- 



