248 PROCEEDINGS OF THE ACADEMY OF [March, 



cm. long and 3.5-4.5 cm. wide, with thin midribs and primary veins; 

 petioles slender, wing-margined nearly to the base, 1.5-2.5 cm. in 

 length. Flowers 1.2-1.5 cm. in diameter, on long slender pedicels, 

 in wide lax mostly 15-20-flowered corymbs, the lower peduncles 

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

 gradually narrowed from wide bases, coarsely glandular-serrate above 

 the middle, densely villose on the inner surf ace, reflexed after anthesis; 

 stamens 20; anthers white; styles 2 or 3, usually 2. Fruit ripening 

 in October, on slender drooping pedicels, in many-fruited clusters, 

 short-oblong, full and rounded at the ends, crimson, lustrous, about 

 1 cm. in diameter; calyx little enlarged, with a narrow shallow cavity; 

 and spreading often deciduous lobes; flesh j^ellow; nutlets 2 or 3, 

 rounded at the ends, ridged on the back, slightly penetrated on the 

 inner faces by small irregular grooves, 5-6 mm. long and 3-3.5 mm. 

 wide. 



A tree, with slender slightly zigzag branchlets light orange-green 

 when they first appear, becoming dark chestnut brown and lustrous 

 in their first season and armed with numerous stout straight chestnut- 

 brown spines 3.5-4.5 cm. long. 



Hollow back of cemetery near Staunton Avenue, Pittsburg, Alle- 

 gheny County, J. A. Shafer, (No. 21 type) October 1901, May 1902. 



This species differs from all the other thin-leaved Tomentosse by 

 the absence of hail's from the leaves and corymbs. 



4. Crataegus propixa n. sp. 



Leaves broadly obovate, acute or acuminate, concave-cuneate at 

 the entire base, finely often doubly serrate above, with straight glan- 

 dular teeth, and slightly divided above the middle into 4 or 5 pairs 

 of small acuminate spreading lobes; nearly fully grown when the 

 flowers open in the first week of June and then thin, dark yellow- 

 green, smooth, lustrous and slightly hairy along the midribs above 

 and pale and villose on the midribs and veins below, and at maturity 

 thin, dark yellow-green, smooth and lustrous on the upper surface, 

 pale and scabrate on the lower surface, 8-9 cm. long and 6-6.5 cm. 

 wide, with thin light yellow midribs and primary veins; petioles 

 slender, narrowly wing-margined to the middle, often rose color in the 

 autumn, 1-1.3 cm. in length. Floivers 1.5-1.6 cm. in diameter, on 

 long stout glabrous pedicels, in narrow mostly 10-15-flowered corymbs, 

 the elongated lower peduncles from the axils of upper leaves; calyx- 

 tube narrowly obconic, glabrous, the lobes gradually narrowed from 

 the base, long, slender, acuminate, laciniately glandular-serrate 

 above the middle, glabrous on the outer surface, sparingly villose 



