88 NEW YORK STATE MUSEUM 



Crataegus cognata Sargent 

 Rhodora V. 58 (190.3). 

 Hillsides, Coopers Plains, G. D. Cornell (;^ 6, 43 and 103), Sep- 

 tember and October 1905, May 1906; also southern Ontario, through 

 western New York to western and southern New England. 



Crataegus rubro-lutea n. sp. 



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

 Leaves ovate to oval, acuminate, rounded or cuneate at the entire 

 base, finely doubly serrate above, with straight or incurved glandular 

 teeth, and slightly divided above the middle into 3 or 4 small acumi- 

 nate spreading lobes ; bronze color and roughened above by short 

 white hairs and furnished below with axillary tufts of hairs when 

 they unfold, more than half grown when the flowers open late in May 

 or early in June and then thin, yellow-green, nearly glabrous and 

 paler below than above, and at maturity thin but firm in texture, dull 

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

 green on the lower surface, 4-5 cm long and 3.5-4 cm wide, with 

 prominent yellow midribs, and primary veins still furnished with a 

 few axillary haiis; petioles slender, slightly wing-margined at the 

 apex, glandular with small dark often persistent glands, 1.5-2 cm in 

 length ; stipules linear, green, glandular-serrate, caducous ; leaves on 

 vigorous shoots subcoriaceous, ovate, rounded or subcordate at the 

 broad base, often 4.5-5.5 cm long and wide and often broader than 

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

 wide, lax, mostly 6-io-flowered corymbs, the elongated lower 

 peduncles from the axils of upper leaves; calyx-tube narrowly 

 obconic, the lobes gradually narrowed from the base, wide, short, 

 acuminate and glandular at the apex, entire or minutely glandular 

 dentate, reflexed after anthesis ; stamens 20 ; anthers pale yellow ; 

 styles 4 or 5. Fruit on long slender red drooping pedicels, in few- 

 fruited clusters, ripening and falling from the middle to the end of 

 October, subglobose and often broader than high, or obovate and 

 abruptly narrowed at the base, slightly angled, light orange-red, lus- 

 trous, marked by large dark dots, 1.2-1.5 cm in diameter; calyx 

 prominent, with a short tube, a broad deep cavity tomentose in the 

 bottom, and sm:ill spreading slightly incurved appressed lobes ; flesh 

 hard, mealy, light orange-red ; nutlets 4 or 5, narrowed and acute 

 at the ends, ridged on the back, with a high narrow often deeply 

 grooved ridge, 6-6.5 "'^"'' lo"g» ^"d 4-4-5 m^i wide. 



