ROSACEiE 



397 



arching veins, l|'-2y long and 1|^'-1^' wide; their petioles slender, wing-raargined 

 toward the apex, hoary-tomentose early in the season, becoming glabrous, about ^' 

 long. Flowers about |' in diameter, on long slender hairy pedicels, in many-flow- 

 ered densely villose compound corymbs; calyx-tube narrowly obconic, densely coated 

 with long matted pale hairs, the lobes slender, acuminate, tipped with minute red 

 glands, sparingly and irregularly glandular-serrate, villose; stamens 20; anthers 

 light rose color; styles 5. Fruit ripening at midsummer, on stout erect slightly 

 hairy pedicels, in few-fruited clusters, subglobose, dull dark red, f'-^' in diameter; 



calyx prominent, with spreading lobes bright red on the upper side at the base; 

 nutlets 5, acute at the narrowed ends, thin, rounded and grooved, with a broad shal- 

 low groove, or irregularly ridged on the back, ^-y%' long, 



A tree, 20-25 high, with a tall trunk 4'-6' in diameter, covered with pale bark, 

 slightly erect branches forming an open irregular head, and slender somewhat zig- 

 zag branchlets thickly coated at first with hoary tomentum, reddish brown and 

 lustrous before autumn, ultimately ashy gray, and armed with straight slender gray 

 spines l^'-l^' long. 



Distribution. Forest-covered bottom-lands of the small tributaries of the Trinity 

 River, Dallas County, Texas; not common. 



32. Crataegus Lettermani, Sarg. 



Leaves obovate, acute or acuminate or rounded and short-pointed at the apex, 

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

 coarsely and often doubly serrate above, with straight or incurved glandular teeth, 

 frequently slightly and irregularly divided above the middle into 3 or 4 pairs of short 

 acute lobes, strongly plicate when they unfold and covered with a thick coat of pale 

 tomentum, nearly half grown, roughened above by short pale hairs and pubescent 

 below when the flowers open early in May, and at maturity thick and firm in tex- 

 ture, bright yellow-green and scabrous above, pale and pubescent below along the 

 stout midribs and 4 or 5 pairs of primary veins, and about 2' long and 1\' wide; their 

 petioles stout, more or less winged above the middle, at first tomentose, becoming 

 pubescent or nearly glabrous, usually about |' long; on vigorous shoots broadly oval, 

 acute or acuminate, more coarsely serrate, 2^'-3' long, 2'-2^' wide, with broad lunate 



