I06 ROCHESTER ACADEMY OF SCIENCE. 



Rochester; only known along the banks of the river below Vincent 

 Street, John Dunbar, May 28, 1900, C. S. Sargetit, September 19, 

 1900, and September 29, 1902, J. Dunbar, May 23 and October 12, 

 1901; Buffalo, J. Dunbar, October 6, 1902. 



Crataegus Maineana, n. sp. 



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

 Leaves ovate to deltoid or rarely rhombic, acuminate, rounded or 

 concave-cuneate at the wide crenulate base, sharply doubly serrate 

 above, with straight gland-tipped teeth and divided usually only above 

 the middle into short broad acuminate lobes ; more than half-grown 

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

 covered on the upper surface with short soft white hairs, aiid villose 

 below along the base of the midribs and lowest veins ; at maturity 

 suboriaceous, glabrous, dark deep blue-green above, pale bluish green 

 below, 5-6.5 cm. long, from 4-6 cm. wade, with thin yellow^ midribs 

 and usually 4 pairs of thin primary veins extending obliquely to the 

 points of the lobes ; petioles very slender, narrowly wing-margined 

 sometimes nearly to the middle, glandular with minute dark persistent 

 glands, 3-4 cm. in length ; stipules linear, acuminate, glandular, 

 usually deciduous before the flowers open ; on vigorous leading shoots, 

 leaves ovate, rounded, truncate or slightly cordate at the base, deeply 

 divided into 3 or 4 pairs of lateral lobes, coarsely serrate, often 

 6-7 cm. long and wide and frequently wider than long. Flowers 2 cm. 

 in diameter on long slender gladular pedicels, in broad compact many- 

 flowered compound corymbs ; bracts and bractlets linear, acuminate, 

 glandular, small, generally persistent vmtil the flowers open ; calyx- 

 tube broadly obconic, the lobes wide, acuminate, entire or occasionally 

 furnished with small lateral stipitate bright red glands, reflexed after 

 anthesis ; stamens 10 ; anthers dark purple ; styles 4, surrounded at 

 the base at a broad band of pale tomentum. Fruit on elongated, 

 reddish pedicels, conspicuously glandular, with large oblong dark 

 glands, in few-fruited drooping clusters, globose, deeply depressed at 

 the base at the insertion of the stalk, dark scarlet, lustrous, marked 

 by occasional large light spots, . scarcely pruinose, about 1.5 cm. in 

 diameter ; calyx, cavity very broad and shallow, the bottom covered 

 with a thick coat of hoary tomentum, the lobes nearly triangular 

 from wide bases, bright red on the upper side below the middle, 

 spreading and appressed ; flesh thin, yellow, sweet, firm and hard ; 

 nutlets 4, prominently grooved on the back, with a narrow rounded 

 groove, 6 mm. in length. 



