I02 ROCHESTER ACADEMY OF SCIENCE. 



3 cm. in length, long persistent on the stems, frequently becoming 

 compound. Flowers about the 20th of May. Fruit ripens the middle 

 of October. 



Rochester ; common on both sides of the Genesee River north of 

 the city, /. Dunbar, May 23, 1901, October 14, 1902, C. S. Sargent, 

 September 29, 1902, M. S. Baxter, May, 1902; Buftalo, J. Dimbar, 

 October 6, 1902. 



Crataegus compta, n. sp. 



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

 the unfolding leaves and young petioles. Leaves oblong-ovate, 

 acuminate, gradually and abruptly narrowed and rounded or broad and 

 subcordate at the entire base, sharply often doubly serrate above, with 

 straight gland-tipped teeth, and slightly divided into three or four 

 pairs of broad acute lateral lobes ; as they unfold tinged with red and 

 sparingly villose on the upper surface, and when the flowers open 

 about one-third grown and then light yellow-green and scabrate above 

 and pale below; at maturity coriaceous, glabrous, very dark dull blue- 

 green on the upper surface, pale and glaucous on the lower surface, 

 6-8 cm. long, 4.5-6 cm. wide, with slender yellow midribs slightly 

 impressed on the upper side and often rose color in the autumn on 

 the lower side, and very thin yellow primary veins extending obliquely 

 to the points of the lobes ; petioles slender, wing-margined at the 

 apex, grooved, sparingly glandular, with numerous deciduous bright 

 red glands, at first villose, soon glabrous, often rose color late in the 

 season, 3-4 cm. long ; leaves on vigorous shoots usually broader in 

 proportion to their length, more deeply lobed, 6-7 cm. long and broad, 

 with stout petioles wing-margined to below the middle, and glandular 

 throughout the season, their stipules lunate, glandular-serrate, early 

 deciduous. Flowers 1.4- 1.6 cm. in diameter on slender pedicels, in 

 compact many-flowered thin-branched compound corymbs ; bracts 

 and bractlets linear to linear-obovate, acuminate, glandular, bright 

 red, mostly deciduous before the flowers open ; calyx-tube narrowly 

 obconic, the lobes slender, acuminate, glandular-serrate usually only 

 above the middle, bright red toward the apex, reflexed after anthesis ; 

 stamens 7-10 ; anthers dark rose color ; styles 3 or 4, surrounded at 

 the base by a narrow ring of pale tomentum. Fruit on stout pedicels, 

 in few-fruited drooping clusters, oblong-obovate to rarely oblong, full 

 and rounded at the ends, light cherry red marked by small pale dots, 

 covered with a glaucous bloom, 1.2- 1.8 cm. in length, about 1.2 cm. 



