REPORT OF THE STATE BOTANIST I907 2/ 



Crataegus arduennae Sargent 



Bot. Gazette XXXV. Z77 (1903); Man. Z7Z, f- 291; Acad. Sci. Phila. Proc. 

 582 (1905). 



South Buffalo, B. H. Slavin (;^ 14), June 6 and October 1906; 

 also southern Ontario, through southern Michigan to northeastern 

 Illinois, and in eastern Pennsylvania. 



Crataegus arduennea was first described- as entirely- 

 glabrous but there are often a few hairs on the upper side of the 

 midribs of the young leaves ; and a few minute hairs can be found 

 occasionally on the young pedicels of the Buffalo plant. 



Crataegus geneseensis n. sp. 



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

 Leaves obovate-oblong, short pointed at the rounded or acute apex, 

 gradually narrowed from near the middle to the concave-cuneate 

 entire base, and finely serrate above, with usually incurved teeth ; 

 nearly fully grown when the flowers open about the ist of June 

 and then thin, slightly hairy along the upper side of the midribs, 

 dark yellow-green and lustrous above and pale below, and at ma- 

 turity subcoriaceous, dark green and very lustrous on the upper sur- 

 face, pale yellow-green on the lower surface, 4.5-5 ^^^ ^^ng and 2-2.5 

 cm wide, with thin prominent midribs, and conspicuous primary 

 veins extending obliquely to above the middle of the leaf; petioles 

 slender, narrowly wing-margined sometimes nearly to the base, 

 slightly hairy on the upper side while young, soon glabrous, 5-8 mm 

 long; leaves on vigorous shoots oval and acuminate to obovate and 

 rounded at the apex, concave-cuneate at the base, coarsely serrate, 

 joften deeply lobed, 6-7 cm long and 3.5-4 cm wide, with thick mid- 

 ribs, and stout broadly winged rose colored petioles. Flowers 1-1.2 

 cm in diameter, on slender pedicels, in wide lax many-flowered 

 corymbs, the lower peduncles from the axils of upper leaves ; calyx- 

 tube narrowly obconic, the lobes slender, elongated, acuminate, 

 minutely glandular serrate near the base, reflexed after anthesis ; 

 stamens 9-11, filaments persistent on the fruit; anthers pink; styles 

 I, 2 or rarely 3. Fruit ripening in the middle of October, on slender 

 drooping reddish pedicels, in few-fruited clusters, short-oblong, full 

 and rounded at the ends, scarlet, lustrous, marked by large dark dots, 

 1. 2-1. 5 cm long and 1-T.2 cm wide; calyx little enlarged, with a 

 deep narrow cavity, and spreading lobes, their tips often deciduous 

 from the ripe fruit; flesh thin, yellow, dry and mealy; nutlets 1-3, 

 obtuse at the ends, rounded and slightly grooved on the back, about 

 8 mm long, and 6 mm in diameter. 



