TREES AND SHRUBS. 



CRATAEGUS ASPERA, Sarg. 



Crataegus aspera, n. sp. 



Leaves oblong-ovate, acuminate, rounded or abruptly cuneate at the entire base, sharply doubly 

 serrate above, with straight glandular teeth, and deeply divided into three or four pairs of accu- 

 mulate spreading lateral lobes ; about one third grown when the flowers open and then thin, dark 

 yellow-green and setose above and pale and villose below, especially on the midribs and veins, and 

 at maturity thin, yellow-green and scabrous on the upper surface, pale and scabrous on the lower 

 surface, from 5.5 to 6.5 centimetres long and from 4 to 6.5 centimetres wide, with slender orange- 

 colored villose midribs and veins ; petioles slender, slightly wing-margined at the apex, villose, 

 occasionally glandular, from 2.5 to 3.5 centimetres in length. Flowers from 1.7 to 1.8 centi- 

 metres in diameter, on long slender villose pedicels, in crowded compact mostly five to seven-flow- 

 ered corymbs, with linear-obovate to linear glandular bracts and bractlets often persistent until 

 the flowers open, the stout lower peduncles from the axils of upper leaves ; calyx-tube broadly 

 obconic, the lobes gradually narrowed from wide bases, short, acuminate, entire, occasionally mi- 

 nutely dentate, glabrous, reflexed after anthesis ; stamens twenty ; anthers rose color ; styles from 

 three to five, surrounded at the base by a narrow ring of yellow tomentum. Fruit on long slender 

 spreading or drooping hairy stems, in few-fruited clusters, short-oblong to subglobose, scarlet, very 

 pruinose, from 1 to 1.2 centimetres in diameter ; calyx little enlarged, with a wide deep cavity, 

 and spreading often deciduous lobes ; flesh thin, yellow-green, dry, and hard ; nutlets usually four 

 or five, thin, rounded at the ends, rounded and grooved or slightly ridged on the back, from 5.5 

 to 6 millimetres long and from 4 to 4.5 millimetres wide. 



A shrub, from 1 to 2 metres high, with stout stems, and slender zigzag branchlets dark orange- 

 green and slightly villose when they first appear, becoming glabrous, bright chestnut-brown, very 

 lustrous, and marked by small pale lenticels in their first season, and dull gray-brown the follow- 

 ing year, and armed with numerous stout or slender slightly curved chestnut-brown shining spines 

 from 4 to 6.5 centimetres long. Flowers appear early in May. Fruit ripens late in November. 

 The leaves turn deep wine color in the autumn before falling. 



Bottom-lands of Baker's Branch, two miles south of Webb City, Jasper County, Missouri, 

 E. J. Palmer and C. S. Sargent (No. 15 type), October 2, 1901, E. J. Palmer, November 3, 

 1901, May 4, 1902. 



c. s. s. 



