58 NEW YORK STATE MUSEUM 



red on the upper side below the middle, their tips often deciduous 

 from the ripe fruit; flesh thick, yellow, sweet and succulent; nut- 

 lets 3 or 4, narrowed at the ends, acute at the apex, prominently 

 ridged on the back, with a broad deeply grooved ridge, 6-7 mm long, 

 and 4 mm wide. 



A shrub 3-4 m high, with erect intricately branched stems covered 

 with pale gray bark and spreading into broad thickets, and slender 

 nearly straight glabrous branchlets, dark orange color and marked 

 by many pale lenticels when they first appear, becoming dull reddish 

 brown in their first season and dark gray-brown the followmg year, 

 and armed with straight or slightly curved chestnut-brown shining 

 spines 3-4 cm long. 



Brighton near Rochester, B. H. Slavin ( # i, type, and 4), 

 October 12, 1903, May 24, 1904. 



This species is named for Bernard Henry Slavin of Seneca park, 

 Rochester, for many years a diligent and careful student and col- 

 lector of Crataegus in western New York. 



Crataegus boothiana n. sp. 



Leaves ovate, acuminate and often long pointed at the apex, 

 rounded at the base, finely often doubly serrate, with straight slender 

 glandular teeth, and divided into 5 or 6 pairs of acuminate spreading 

 lobes; tinged with red when they unfold, nearly half grown when 

 the flowers open about the 20th of May and then membranaceous, 

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

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

 glabrous and lustrous on the upper surface and pale bluish green 

 on the lower surface, 5-6 cm long and 4-4.5 cm wide, with slender 

 midribs, and thin primary veins extending obliquely to the points 

 of the lobes ; petioles slender, slightly wing-margined at the apex, 

 glabrous, glandular, with occasional minute scattered often persistent 

 glands, 1-2.5 cm in length ; leaves on vigorous shoots rounded or 

 often cordate at the broad base, deeply lobed, with stout winged 

 conspicuously glandular petioles. Flowers about 1.2 cm in diameter, 

 on slender glabrous pedicels, in compact mostly 8-io-flowered 

 corymbs ; calyx-tube narrowly obconic, glabrous, the lobes slender, 

 acuminate, entire or slightly toothed near the base, glabrous, red 

 above the middle, reflexed after anthesis; stamens 10; filaments 

 persistent on the fruit; anthers pink; styles 3, surrounded at the 

 base by a narrow ring of pale tomentum. Fruit ripening the middle 

 of September, on short reddish pedicels, in few-fruited drooping 



