REPORT OF THE STATE BOTANIST IQI2 79 
September on glabrous drooping red pedicels, subglobose to slightly 
obovoid, crimson, lustrous, marked by numerous small pale dots, 
1.5 cm in diameter; calyx prominent with a broad shallow cavity 
pointed and tomentose in the bottom, and spreading and incurved 
lobes; flesh thin, yellow, dry and mealy; nutlets three or four, 
rounded and broadest at the apex, gradually narrowed and rounded 
at the base, prominently ridged on the back with a broad high ridge, 
8 to 9 mm long and about 5 mm wide, the narrow chestnut-brown 
hypostyle extending to below the middle of the nutlet. 
A tree or arborescent shrub 6 to 7 m high, with a stem covered 
with yellowish brown bark, upright branches, and slender nearly 
straight branchlets dark orange-green marked by pale lenticels and 
slightly villose when they first appear, glabrous, lustrous and light 
gray-green at the end of their first season and dull gray-brown the 
following year, and armed with stout straight chestnut-brown shin- 
ing spines 3 to 5 cm long. 
Helmlock lake region, Livingston county, Henry T. Brown (no. 
31, type), May 28, 1906; September 20, 1907. 
This species is named for its discoverer, Henry T. Brown, the 
engineer of the park department of the city of Rochester who has 
paid particular attention to the Thorns which grow in great abund- 
ance and variety near Hemlock lake. 
PRUINOSAE 
Crataegus pruinosa Kk. Koch 
Verhandl. Preuss. Gart. Verein. neue Reihe 1. 346 (1854). Sargent, Silva 
N. Am. XIII. 61, t.648; N. Y. State Mus. Bul. 122. 37 (1908). 
Crown Point, Lansingburg, Chapin, Buffalo, Belfast, Salamanca; _ 
also western Vermont, Massachusetts, eastern Pennsylvania, and 
southern Ontario to Ohio and Illinois. 
Crataegiis oblita Sargent 
N. Y. State Mus. Bul. 122. 40 (1908). 
Buffalo. 
Crataegus arcana Beadle 
Biltmore Bot. Studies 1. 122 (1902). Sargent, Bot. Gazette XXXYV. ror; 
N. Y. State Mus. Bul. 122. 35 (1908). 
Syracuse, Niagara Falls, Coopers Plains; also eastern Pennsyl- 
vania to western North Carolina. 
