NEW YORK SPECIES OF CRATAEGUS FROM VARIOUS 



LOCALITIES 



BY C. S. SARGENT 

 PRUINOSAE 



Crataegus bronxensis n. sp. 



Leaves ovate, acuminate, gradually or abruptly narrowed and 

 concave-cuneate at the entire base, sharply often doubly serrate 

 above, with straight glandular teeth, and divided above the middle 

 into 3 or 4 pairs of short acuminate lobes; nearly half grown when 

 the flowers open late in May and then thin, light yellow-green and 

 slightly hairy especially on the midribs above, and paler and spar- 

 ingly villose along the midribs and veins below, with persistent 

 hairs, and at maturity very thin, dark bluish green and scabrate on 

 the upper surface, pale blue-green on the lower surface, 4.5-5.5 

 cm long and 3-4 cm wide, with slender midribs, and thin primary 

 veins extending very obliquely to the points of the lobes ; petioles 

 slender, wing-margined at the apex, glabrous, glandular, with occa- 

 sional mostly persistent glands, often rose colored in the autumn, 

 2.5-3 c^ ^^ length; leaves on vigorous shoots sometimes rounded 

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

 and often 6-^ cm long and 5-6 cm wide. Flowers 1.8-2 cm in 

 diameter, on short slender slightly hairy pedicels, in compact mostly 

 5-7-flowered corymbs, with linear acuminate bracts and bractlets 

 fading brown and often persistent until the flowers open, the lower 

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

 conic, glabrous, the lobes abruptly narrowed from wide bases, slen- 

 der, acuminate, entire or occasionally minutely glandular dentate, 

 glabrous on the outer, slightly villose on the inner surface, reflexed 

 after anthesis ; stamens 20 ; anthers light pink ; styles 4 or 5. Fruit 

 on erect slender pedicels, in few-fruited clusters, falling late in the 

 autumn without becoming soft, subglobose or rather broader than 

 high, apple-green, slightly pruinose, becoming lustrous, marked by 

 large dark dots, 1-1.2 cm in diameter; calyx prominent, with a short 

 tube, a broad shallow cavity, and spreading and reflexed often de- 

 ciduous lobes dark red on the upper side below the middle ; flesh 

 thin, green, dry and hard ; nutlets 4 or 5, gradually narrowed and 

 rounded at the ends, rounded and grooved or irrcgulnrlv ridged on 

 the back, 6-6.5 mm long and about 4 mm wide. 



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