Il6 NEW YORK STATE MUSEUM 



A shrub, with slender slightly zigzag glabrous branchlets orange- 

 green more or less tinged with red when they first appear, becoming 

 light chestnut-brown, lustrous and marked by pale lenticels in their 

 first season and dull red-brown the following year, and armed 

 with numerous slender straight or slightly curved chestnut-brown 

 shining spines 3.5-5.5 cm long. 



In Bronx park, New York city, W. W. Eggleston (# 154, type), 

 October 5, 1904, May 25, 1907. 



Crataegus livingstoniana n. sp. 



Glabrous with the exception of the hairs on the upper side of the 

 leaves. Leaves ovate, acuminate, abruptly cuneate or rounded at 

 the entire base, coarsely often doubly serrate above, with straight 

 glandular teeth, and slightly divided into 4 or 5 pairs of small 

 acuminate spreading lobes ; about half grown when the flowers open 

 in the last week of May and then very thin, yellow-green and slightly 

 hairy above and pale below, and at maturity thin, light yellow-green, 

 smooth or occasionally hairy and roughened on the upper surface, 

 paler on the lower surface, 5-7 cm long and 4-5.5 cm wide, with 

 thin midribs, and primary veins extending obliquely to the points of 

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

 occasionally glandular, 1.5-3 cm in length ; leaves on vigorous shoots 

 thicker, rounded or cordate at the base, more deeply lobed and more 

 coarsely serrate. Flowers 1.6-1.8 cm in diameter, on long slender 

 pedicels, in mostly 5-8-flowered corymbs, the elongated lower 

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

 obconic, the lobes gradually narrowed from the base, long, slender, 

 glandular and acuminate at the apex, minutely glandular dentate, 

 reflexed after anthesis ; stamens usually 8 ; anthers dark red ; styles 

 3-5, surrounded at the base by a narrow ring of pale tomentum. 

 Fruit ripening the middle of October, on stout spreading or droop- 

 ing pedicels, in few-fruited clusters, short-oblong, full and rounded 

 at the ends, red, lustrous, marked by many small pale dots, 

 1. 2-1. 5 cm long and 1-1.2 cm in diameter; calyx prominent, with a 

 deep narrow cavity pointed and tomentose in the bottom, and 

 elongated spreading and incurved persistent lobes dark red on the 

 upper side ; nutlets 3-5, narrowed and acute at the ends or when 

 3 rounded at the ends, rounded and grooved or slightly ridged on 

 the back, 6.5-7 ^^^ long, and about 4 mm wide. 



An arborescent shrub sometimes 5-6 m high, with stems 1-1.5 dm 

 in diameter covered with ashy gray bark, ascending branches form- 



