CRATAEGUS IN ROCHESTER, NEW YORK. I07 



A treelike shrub often 4 or 5 m. in height with stout intricately 

 branched stems covered with dark bark, spreading into wide thickets, 

 small erect branches and slender slightly zigzag branchlets light 

 orange-green and marked by small pale lenticels when they first appear, 

 bright red-brown and lustrous at the end of their first season, becom- 

 ing light reddish brown the following year and armed with very slender 

 straight or slightly curved bright red-brown shining spines 4-6 cm. 

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

 the middle of October. The leaves turn to handsome bronze-red in 

 the autumn. 



Rochester ; only in the northwestern part of the city, John 

 Dicnbar, October 10, 1900, May and September, 1901, October, 1902, 

 C. C. Lancy, October, 1902 ; Adams Basin, New York, M. S. Baxter, 

 May 29, 1902 ; Buffalo, John Dunbar, October, 1902. 



This species is named for Henry Clay Maine of Rochester, an 

 interested observer of Crataegus in the valley of the Genesee River. 



§ INTRICATAE. 



Fruit medium size, orange-red or crimson ; 7iutlets 2-§, ridged on the 

 back; corymbs fcw-Jiowered ; stamens 10 or less ; anthers yellow. 

 Leaves oblong-ovate to oval ; mature leaves smooth ; 

 stamens 10 ; fruit subglobose, orange- red. 



II. C. Baxteri. 

 Leaves oblong to obovate ; mature leaves scabrate ; stamens 

 7 ; fruit oblong to oblong-obovate, crimson. 



12. C. verecunda. 



Crataegus Baxteri, n sp. 



Glabrous with the exception of a few caducous hairs on the upper 

 surface of the unfolding leaves and young petioles.' Leaves oblong- 

 ovate to oval, acuminate, concave-cuneate, rounded or on leading shoots 

 sometimes truncate at the entire or crenulate base, finely doubly serrate 

 above, with straight gland-tipped teeth, and divided into short broad 

 acute lateral lobes ; when they unfold furnished on the upper surface 

 with a few long white caducous hairs and nearly fully grown when the 

 flowers open and then membranaceous, nearly glabrous, dark yellow- 

 green above, pale below ; at maturity smooth and coriaceous, 'dull 

 dark bluish green on the upper surface, pale on the lower surface, 

 slightly concave by the infolding of the margins, 4.5-6.5 cm. long, 



