74 



MISSOURI BOTANICAL GARDEN. 



^h 



r 



i 



clusters, subglobosc or a little longer than broad, scarlet, more or less pruin- 

 ose, marked by large pale dots, 8-9 mm. in diameter; calyx prominent, 

 with a short tube, a wide deep cavity, and spreading and incurved mostly 

 persistent lobes; flesh thin, yellow-green, dry and hard; nutlets 1 or 2, 

 acute at the base, rounded and obtuse at the apex, slightly ridged on the 

 back, with a narrow low ridge, 4.5-5 mm, long, and about 2.5 mm. wide, or 

 when 1, 4 mm. in diameter. 



A shrub or small tree occasionally 5 m. high but often be- 

 ginning to flower when less than 1 m. tall, large intricately 

 hrnnohed stems, and stout zigzag branchlets dark orange- 



to 



matted pale hairs when 



first season and 



brown, lustrous and pub 



and armed with very 



ved 



Webb 



Palmer, (No. 17 type) 



and 



1901, 



May 4, 1902, (No. 17 A) November 3, 1901, (No. 17 B) May 4, 

 1902; Eagle Rock, Barry County, B. F. Bush, (No. 86) May 



24, 1898, 



40. Crataegus vallicola, n. sp. 



Leaves oblong-obovate, rounded or acute and often short-pointed at the 

 apex, gradually narrowed to the long slender concave-cuneate entire base, 

 --''and finely serrate above the middle, with straight or incurved glandular 

 teeth; more than half-grown when the flowers open from the 10th to the 

 middle of May and then thin, dark yellow-green, smooth, lustrous and 

 villose along the midribs above and paler and glabrous below, and at 

 maturity thin, dark yellow-green, smooth, lustrous and still slightly hairy 

 on the midribs on the upper surface, pale yellow-green on the lower surface, 

 4-5 cm. long and 2.5-3 cm. wide, with prominent midribs, and thin con- 

 spicuous primary veins; petioles slender, wing-margined nearly to the 

 base, slightly hairy on the upper side, 8-9 mm. in length; leaves on 

 vigorous shoots thicker, with stouter midribs and primary veins, and 

 often 7-8 cm. long and 4-4.5 cm. wide. Flowers 1.4-1.5 cm. in diameter, 

 on long slender slightly villose pedicels, in wide hairy 15-20-flowcrcd 

 corymbs, the elongated lower peduncles from the axils of upper leaves; 

 calyx-tube narrowly obconic, glabrous, the lobes gradually narrowed 

 from the base, short, slender, entire or occasionally minutely dentate 

 near the middle, glabrous on the outer, sparingly villose on the inner 

 surface, reflexed after anthesis; stamens 10-15; anthers pale pink; 

 styles 2 or 3, generally 2. Fruit ripening and falling late in September, 

 on slightly hairy pedicels, in few-fruited spreading clusters, short-oblong, 



V 



