CRATAEGUS IN MISSOURI. 63 



full and rounded at the ends, green tinged with red, about 1 cm. in diameter; 

 calyx little enlarged, with a broad deep cavity, and small spreading and 

 ascending lobes; flesh thin, green, dry and hard; nutlets 1-3. 



A tree 4-5 m, high, with a trunk 1.5-1.8 dm. in diameter, 

 covered with dark scaly bark, large spreading branches form- 

 ing a wide round-topped head, and stout nearly straight 

 branchlcts, dull brown, slightly hairy and marked by large 



when 



and 



armed 



merous stout straight light red-brown ultimately gray spines 



4-6 cm. long. 

 Dry rocky 



September 



Taney County, B. F. Bush 



(Nos. 6 B, 6 C and 6 D) May 16, 1907. 



25. Crataegus barbata, n. sp. 



' Leaves oblong-obovate, acute or rarely rounded at the apex, gradually- 

 narrowed to the concave-cuneate entire base, and finely serrate above the 

 middle, with straight glandular teeth; when the flowers open the middle 

 of May thin, yellow-green, lustrous and roughened by short white hairs and 

 villose along the midribs above, and pale and villose below along the mid- 

 ribs and veins. Flowers 1.2 cm. in diameter, on short hairy pedicels, in 

 broad villose corymbs, the elongated lower peduncles from the axils of 

 upper leaves; calyx-tube narrowly obconic, coated with matted pale 

 hairs, the lobes slender, acuminate, minutely dentate above the middle, 

 glabrous on the outer, pubescent on the inner surface, reflexed after 

 anthesis; stamens 10 or often only 5, 6 or 8; anthers pale salmon color; 

 styles 2 or 3. Fruit ripening early in October, on slender slightly hairy 

 drooping pedicels, in few-fruited clusters, subglobose to short-oblong, 

 dark red, lustrous, niarked by large pale dots, 8-9 mm. in diameter; calyx 

 prominent, with a deep narrow cavity, and spreading nearly glabrous 

 lobes; flesh thin, green, dry and hard; nutlets usually 2, narrowed and 

 obtuse at the ends, slightly ridged on the back, 5-5.5 mm. long, and about 

 3 mm. wide. 



A shrub 3^ m. high, with small stems covered with dark 

 bark, small horizontal branches forming a broad flat-topped 

 head, and stout slightly zigzag branclilets light orange color 

 and covered with long white hairs when they first appear, be- 

 coming glabrous and lustrous in their first season and light 

 gray-brown the following year, and armed with stout slightly 

 curved purple shining spines 3-3.5 cm. long. 



