NOTES ON A COLLECTION OF CRATAEGUS MADE BY 

 MR G. D. CORNELL IN THE NEIGHBORHOOD OF 

 COOPERS PLAINS, STEUBEN COUNTY, NEW YORK. 



BY C. S. SARGENT 

 PLIVCTATAE 



Crataegus desueta n. sp. 



Leaves rhombic to sliglitly obovate, acuminate at the ends, finely 

 doubly serrate, with straight glandular teeth, and divided above the 

 middle into 5 or 6 pairs of slender acuminate spreading or recurved 

 lobes; when they unfold tinged with red and covered on the upper 

 surface with long soft white hairs, more than half grown when 

 the flowers open about the middle of May and then very thin, light 

 yellow-green and nearly glabrous above and pale and glabrous be- 

 low, and at maturity thin but firm in texture, dark yellow-green, 

 smooth, glabrous and lustrous on the upper surface, pale yellow- 

 green on the lower surface, 5-6 cm long and 3-4 cm wide, with 

 slender prominent yellow midribs and primary veins ; petioles slen- 

 der, slightly wing-margined at the apex, sparingly hairy on the 

 upper surface, 1.5-2.5 cm in length; leaves on vigorous shoots oval 

 to obovate, usually abruptly long-pointed at the apex, concave- 

 cuneate at the base, more coarsely serrate, more deeply lobed and 

 often 6-7 cm long and 4.5-5 cm wide. Flowers about 1.5 cm in 

 diameter, on slender slightly villose pedicels, in lax m.ostly S-io- 

 flowered corymbs, the much elongated lower peduncles from the 

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

 lobes long, slender, acuminate, entire or occasionally glandular den- 

 tate near the base, glabrous, reflexed after anthesis ; stamens 10; 

 anthers rose color ; styles 2-4, surrounded at the base by a narrow 

 ring of pale tomentum. Fruit ripening late in September, on long 

 slender glabrous or slightl}- hairy drooping pedicels, in few-fruited 

 clusters, short-oblong full and rounded at the ends, scarlet, lus- 

 trous, marked by small pale dots, 1-1.2 cm long, 8-10 mm in diam- 

 eter ; calyx prominent, with a deep narrow cavity, and much elon- 

 gated erect and incurved nearly entire persistent lobes dark red on 

 the upper side below the middle ; flesh thin, dark yellow, dry and 

 mealy ; nutlets usually 3 or 4, narrowed and acute at the ends or 

 rounded at the apex, rounded and only slightly grooved on the 

 back, 6.5-7 mm long, and 4-4.5 mm wide. 



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