186 JOURNAL OF THE ARNOLD ARBORETUM (vol. hi 



Columbia by B. F. Bush (No. 971), October 3, 1901, with thicker and 

 more lustrous broad-ovate leaves up to 8 cm. long and 7 cm. wide, rather 

 larger fruit and more zigzag branchlets probably represent an extreme 

 form of this species. Much land has been cleared in the neighborhood of 

 Columbia in recent years and this tree has probably disappeared as various 

 attempts to rediscover it have failed. 



Crataegus stenosepala (§ Virides), n. sp. 



Leaves elliptic to oblong-elliptic or obovate, acute or acuminate at 

 apex, gradually narrowed and cuneate at base, sharply and coarsely 

 serrate above the middle with straight teeth, and often divided toward the 

 apex into short lobes; when they unfold deeply tinged with red and slightly 

 pubescent, nearly fully grown when the flowers open and then roughened 

 above by short white hairs and conspicuous below by the thick snow-white 

 pubescence along the midrib and on the petioles, the villose primary 

 veins and by the axillary clusters of white hairs, and at maturity glabrous, 

 yellow-green and lustrous on the upper surface, paler on the lower surface, 

 3.5-5.5 cm. long and 1.5-3 cm. wide, with a thin midrib and slender 

 primary veins impressed above; petioles 6-7 mm. in length; leaves on 

 vigorous shoots oblong-obovate, thicker, acuminate, cuneate at base, 

 more coarsely serrate and more deeply lobed and up to 7 cm. in length 

 and 4 cm. in width. Flowers opening toward the end of March, 2 cm. in 

 diameter, in wide loose 10-20-flowered slightly villose corymbs; calyx- 

 tube broad-obconic, sparingly covered with long white ridged hairs, the 

 lobes gradually narrowed from the base, slender, long-acuminate, minutely 

 and irregularly serrate, glandular-ciliate, glabrous on the outer surface, 

 obscurely ciliate on the inner surface, 7-8 mm. long; stamens 20; anthers 

 pale yellow; styles 5. Fruit ripening early in October, ellipsoidal to 

 slightly obovoid, on slender glabrous pedicels in drooping clusters, orange- 

 red, 7 or 8 mm. long, 5-6 mm. thick, with thin dry flesh, the calyx with 

 a distinct tube, spreading lobes and a deep narrow cavity pointed in the 

 bottom; nutlets 4 or 5, rounded at base, acute at apex, only slightly 

 grooved on the back, 7-8 mm. long and 3-4 mm. wide, the pale broad 

 hypostyle extending to the middle. 



A shrub or small tree 4-5 m. high, with stems forming large thickets, 

 and covered with dark slightly scaly bark and slender slightly zigzag 

 branchlets covered when they first appear with long matted white hairs, 

 becoming glabrous and light red-brown during their first season and ashy 

 gray in their second year, and armed with numerous nearly straight 



slender spines 2-4 cm. in length. 



Texas. Fort Bend County, low well drained soil near Duke, E.J 

 Palmer, Nos. 5093 (10a) and G701 (10a, type) April 2 and October 1, 1914. 



Distinct from the species of this Group in the remarkably long slendre 

 calyx-lobes and conspicuous when in flower from the broad band of 

 snow white tomentum covering the under side of the lower half of the 

 midrib of the leaves. 



