1910.] NATURAL SCIENCES OF PHILADELPHIA. 245 



thick, dark yellow-green and glabrous on the upper surface, pale 

 bluish green on the lower surface, 6-7 cm. long and 4.5-6 cm. wide, 

 with thin midribs and primary veins; petioles slender, narrowly 

 wing-margined nearly to the base, often rose color in the autumn, 

 1.8-2.2 cm. in length. Flowers 2 cm. in diameter, on long slender 

 pedicels, in mostly 8-12-flowered corymbs, with oblong-obovate 

 often falcate to linear glandular-serrate deep rose-colored bracts 

 and bractlets mostly persistent until the flowers open; calyx-tube 

 broadly obconic, the lobes separated by wide. sinuses, gradually nar- 

 rowed from the base, long, slender, red and acuminate at the apex, 

 minutely glandular-serrate below the middle, reflexed after anthesis; 

 stamens 20; anthers light rose color; styles 2 or 3. Fruit ripening 

 early in October on slender pedicels, in few-fruited clusters, oval, 

 orange-red, lustrous, marked by many large dark dots, about 1 cm. 

 long and 8 mm. in diameter; calyx prominent, with a short tube, 

 a deep narrow cavity pointed in the bottom, and small reflexed closely 

 appressed persistent lobes; flesh thin, yellow, dry and mealy; nutlets 

 2 or 3, usually 3, gradually narrowed and rounded at the ends, ridged 

 on the back, with a broad slightly grooved ridge, marked on the inner 

 faces by slight depressions, 6-6.5 mm. long and about 4 mm. wide. 



A tree 5 m. high, with a trunk sometimes 1.5 dm. in diameter, 

 covered with scaly bark, and stout nearly straight branchlets, light 

 orange-green and marked by pale lenticels when they first appear, 

 becoming light chestnut brown and lustrous in their first season and 

 armed with numerous stout or slender nearly straight purple shining 

 spines 4-5 cm. long, often pointed toward the base of the branch, and 

 persistent and becoming branched on older stems. 



Virginia, near Scranton, Lackawanna County, A. Twining, (No. 41 

 type) May 28 and October 1, 1907. , 

 2. Crataegus errata n- sp. 



Glabrous with the exception of the hairs on the young leaves. 

 Leaves ovate to oval, acute or acuminate, gradually narrowed and 

 concave-cuneate at the base, finely often doubly serrate, with straight 

 glandular teeth, and slightly divided usually only above the middle 

 into 3 or 4 pairs of small acuminate lobes ; more than half-grown when 

 the flowers open about the 10th of June and then light yellow-green, 

 smooth and slightly hairy along the midribs above and lighter yellow- 

 green and glabrous below, and at maturity rather thick, dark yellow- 

 green, smooth, lustrous and glabrous on the upper surface, light 

 yellow-green on the lower surface, 4-5 cm. long and 3-3.5 cm. wide, 

 with thick midribs, and slender primary veins; petioles stout, slightly 



