TREES AND SHRUBS. 



CRATAEGUS VIBUENIFOLIA, Saeg. 



(Molles.) 



Crataegus viburnifolia, n. sp. 



Leaves elliptical to ovate, oval or slightly obovate, acute at the apex, concave-cuneate at the en- 

 tire base, coarsely often doubly serrate, with straight glandular teeth, and slightly and irregularly 

 divided above the middle into two or three pairs of small acute lobes ; more than half-grown when 

 the flowers open about the 20th of March and then thin, yellow-green and roughened above by short 

 white hairs and hoary-tomentose below, and at maturity thick, deep green, very lustrous and sca- 

 brate on the upper surface, coated on the lower surface with matted pale hairs, from G to 9 centimetres 

 long and from 5 to 7 centimetres wide, with prominent midribs and primary veins ; petioles slightly 

 wing-margined at the apex, densely hoary-tomentose early in the season, becoming glabrous, from 

 1 to 3.5 centimetres in length. Flowers from 1.8 to 2 centimetres in diameter, on long slender 

 tomentose pedicels, in wide lax mostly five- to twelve-flowered corymbs, with large lanceolate 

 to spatulate foliaceous bracts and bractlets slightly serrate above the middle and generally per- 

 sistent until after the petals fall; calyx-tube narrowly obconic, thickly coated with matted white 

 hairs, the lobes gradually narrowed from the base, long, slender acuminate, laciniately glandular- 

 serrate, slightly villose on the outer surface, densely villose on the inner surface, reflexed after 

 anthesis ; stamens twenty; anthers white ; styles four or five. Fruit ripening in October, on long 

 slender drooping slightly hairy pedicels in few-fruited clusters, subglobose, bright canary yellow, 

 from 2 to 2.5 centimetres in diameter; calyx little enlarged, with a wide deep cavity broad and 

 tomentose in the bottom and spreading lobes ; flesh thick, light yellow, soft and succulent ; nutlets 

 four or five, gradually narrowed and rounded at the ends, irregularly ridged on the back, with a 

 broad grooved ridge, from 7 to 8 millimetres long and from 4.5 to 5 millimetres wide. 



A tree, from 8 to 10 metres high, with a tall trunk sometimes 3 decimetres in diameter, covered 

 with gray scaly bark, large ascending and spreading branches forming an open irregular head, and 

 stout nearly straight unarmed branchlets thickly coated with hoary tomentum when they first 

 appear, becoming purple, lustrous and nearly glabrous at the end of their first season and dark- 

 brown or gray-brown the following year. 



Borders of woods in low ground, valley of the Brazos River, between Columbia and Brazoria, 

 Brazoria County, Texas, B. F. Bush, September 25, 1901, March 27, 1902, B. F. Bush and 

 G. S. Sargent, March 23, 1909 (No. 11 type, and Nos. 439, 912, 1219, 1516 all in herb. Arnold 

 Arboretum). 



