I04 ROCHESTER ACADEMY OF SCIENCE. 



slender pedicels, in wide 6-12-flowered thin-branched compound 

 corymbs; bracts and bractlets linear to linear-obovate, glandular, 

 mostly deciduous before the flowers open; calyx-tube broadly obconic, 

 . the lobes wide, acuminate, irregularly serrate usually only below the 

 middle, reflexed after anthesis; stamens 10; anthers purple, styles 4 or 

 5, surrounded at the base by a broad ring of hoary tomentum. Fruit 

 on elongated reddish pedicels, in drooping clusters, subglobose to 

 short-oblong, flattened at the ends, scarlet, lustrous, slightly pruinose, 

 marked by occasional small dark dots, 1-1.2 cm. in diameter; calyx 

 sessile, with a wide shallow cavity, the lobes gradually narrowed from 

 broad bases, coarsely glandular-serrate, dark red on the upper side 

 toward the base, spreading and appressed, or erect and incurved, mostly 

 persistent on the ripe fruit; flesh thick, tinged with red, sweet, dry 

 and mealy; nutlets 4 or 5, thin, acute at the ends, ridged, with a broad 

 low grooved ridge or rounded and slightly grooved on the back, about 

 8 cm. in length. 



An intricately branched shrub often 5 or 6 m. in height, with 

 numerous stems spreading into broad dense thickets, and stout only 

 slightly zigzag branchlets, tinged with red when they first appear, 

 bright red-brown, lustrous and marked by many small pale Icnticels at 

 the end of their first season, becoming darker and gray or reddish 

 brown the following year, and armed with many stout, nearly straight 

 or slightly curved bright red-brown shining spines 3.5-5 cm. in length. 

 Flowers from the 20th to the end of May. Fruit ripens about the 

 loth of October. 



Rochester; common north and south of the city along the river 

 banks, John Dunbar, May, 1900, C. S. Sargent, September 19, 

 1900, John Dunbar, May and September, 1901, October, 1902; 

 Niagara Falls, New York, C. S. Sargent, September, 1900. 



Crataegus opulens, n. sp. 



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

 the young leaves and petioles. Leaves oblong-ovate to oval, acuminate, 

 full and rounded or broadly cuneate at the entire base, sharply doubly 

 serrate above, with straight gland-tipped teeth, and slightly divided 

 into three or four pairs of broad acuminate spreading lobes; about half 

 grown when the flowers open, and then very thin, light yellow-green 

 and roughened above by short pale hairs and paler below; at maturity 

 coriaceous, glabrous, dark bluish green and lustrous on the upper 

 surface, very pale blue-green on the lower surface, 4-7 cm. long, 3-5 



