180 PROCEEDINGS OF THE ACADEMY OF [March, 



stout slightly curved chestnut brown ultimately dark gray spines 

 4-5 cm. long. 



On rocky knolls, near Kutztown, Bucks County, C. L. Gruber, 

 (No. 22 type) October 6, 1907, May 17 and September 15. 1908. 



This handsome species resembles C. arcana Beadle in the char- 

 acter of the fruit but the stamens are only 10, not 20, and the deeply 

 divided leaves, which resemble those of C. piyinatifida from northern 

 China, are unlike those of any species in this group. 

 17. Crataegus edurescens n. sp. 



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

 Leaves broadly ovate, acute or acuminate, cuneate or rarely rounded 

 at the wide entire base, sharply often doubly serrate above, with 

 glandular teeth, and slightly divided usually only above the middle 

 into 4 or 5 pairs of small acuminate lobes ; nearly fully grown when the 

 flowers open from the 15th to the 20th of May and then very thin, 

 light yellow-green and roughened above by short white hairs and pale 

 and glabrous below, and at maturity thin, yellow-green, glabrous, 

 smooth and lustrous on the upper surface, rather lighter-colored on 

 the lower surface, 3.5-4.5 cm. long and often nearly as broad, with 

 thin midribs and primary veins ; petioles slender, glandular, with small 

 sometimes persistent glands, 1.5-3 cm. in length; leaves on vigorous 

 shoots thicker, more deeply lobed, rounded at the wide base, sometimes 

 5.5-6 cm. long and often broader than long. Flowers 1.6-1.8 cm. in 

 diameter, on long slender pedicels, in mostly 7- or 8-flowered corymbs, 

 the lower peduncles from the axils of upper leaves ; calyx-tube broadly 

 obconic, the lobes gradually narrowed from wide bases, long, acumi- 

 nate, occasionally furnished above the middle with large glandular 

 teeth, or nearly entire, reflexed after anthesis; stamens 5-10, usually 

 10; anthers dark rose color; styles 3 or 4, surrounded at the base by a 

 broad ring of pale t omentum. Fruit ripening early in October, on 

 long slender spreading pedicels, in few-fruited clusters, obovate, 

 rounded at the apex, slightly narrowed to the base, green, pruinose, 

 becoming red, 8-10 mm. in diameter; calyx prominent, with a short 

 tube, a broad deep cavity wide and tomentose in the bottom, and 

 spreading or reflexed persistent lobes; flesh thin, dry and mealy; 

 nutlets 3 or 4, narrowed and rounded at the apex, broader and rounded 

 at the base, rounded and only slightly ridged on the back, 6.5-7 mm. 

 long and 4-4.5 mm. wide. 



A shrub 3-4 m. high, with slender zigzag branchlets light orange 

 green when they first appear, becoming bright chestnut brown, lus- 

 trous and marked by pale lenticels in their first season and dull reddish 



