156 PROCEEDINGS OF THE ACADEMY OF [March, 



The flowers of number 295, from Orbisonia, have usually only 6-10 

 stamens. In other respects the two plants appear to be very much alike. 



6. Crataegus eburnea Ashe. 



Ann. Carnegie Mus., I, pt. Ill, 393 (1902). 



Glabrous. Leaves oblong-obovate, rounded or acute at the apex, 

 gradually narrowed to the concave-cuneate entire base, and finely 

 often doubly serrate above, with straight or incurved glandular teeth ; 

 about half-grown when the flowers open in the first week of June and 

 then thin, dark yellow-green, smooth and lustrous above and paler 

 below, and at maturity subcoriaceous, dark yellow-green and very 

 lustrous on the upper surface, paler on the lower surface, 4.5-5 cm. 

 long, 2.5-3 cm. wide, with thin prominent midribs and primary 

 veins; petioles stout, narrowly wing-margined nearly to the ba>e, 

 occasionally glandular early in the season, with deciduous glands, 

 6-8 mm. in length. Flowers about 1.4 cm. in diameter, on slender 

 pedicels in broad many-flowered corymbs, the long lower peduncles 

 from the axils of upper leaves; calyx-tube narrowly obconic, the 

 lobes long, slender, acuminate, entire, reflexed after anthesis ; 

 stamens 8-10; anthers white; styles 1 or 2. Fruit ripening in 

 October, on long drooping pedicels, in few-fruited clusters, oblong- 

 obovate to oval, narrowed and rounded at the apex, more gradually 

 narrowed and pointed at the base, dark red, 1.3-1.4 cm. long and 9-10 

 mm. in diameter; calyx little enlarged, with a deep narrow cavity 

 pointed in the bottom, and slender reflexed persistent lobes; flesh thin, 

 yellow-green, diy and hard; nutlets 1 or 2, obtuse at the apex, slightly 

 narrowed at the base, ridged on the back, with a low narrow ridge, 

 7-8 mm. long and about 3 mm. wide, or when 1 about 1.5 mm. in 

 diameter. 



A tree sometimes 7-8 m. high, with a short trunk 2-2.5 dm. in 

 diameter covered with light gray bark broken into rectangular scales, 

 stout wide-spreading branches forming a broad round-topped head, and 

 slender straight or slightly zigzag branchlets dark orange-green and 

 marked by small pale lenticels when they first appear, becoming dark 

 purple and lustrous in their first season and dark brown the following 

 year, and armed with slender straight or slightly curved purple spines 

 2-3 cm. long, and occasionally persistent and becoming much elon- 

 gated and branched on old stems. 



Darlington Hollow, Sharpsburg, Allegheny County, J. A. Shafer, 

 (No. 22, the type tree) June 8 and October, 1901, May 28, 1902, O. E. 

 Jennings, (No. 98) June 16. 1908. 



