220 BOTANICAL GAZETTE [APRIL 
This is another of the Crus-galii group, differing from the species of 
Linnaeus by its thin pointed or suborbicular leaves with prominent veins, which 
even on vigorous shoots show no tendency to lobing, by its pale yellow not 
rose-colored anthers, small nearly globose bright scarlet fruit, by its ascend- 
ing not wide-spreading branches, and by its less numerous spines standing 
out from all sides of the branchlets, as they do usually in Crataegus with the 
exception of Crataegus Crus-galli. This species in its typical form can always 
be recognized by the direction of the spines which point downward from the 
branch in two ranks. 
Growing in a field in the Mississippi bottom near Fish lake in the village 
of Cahokia about four miles below East St. Louis there is a specimen of 
Crataegus erecta forty feet in height with a trunk three feet in diameter three 
feet above the surface of the ground and a broad head of numerous large 
upright branches. 
/ Crataegus Lettermani, n. sp—Leaves obovate to broadly 
oval on leading shoots, acute, acuminate or rounded and short- 
pointed at the apex, gradually narrowed from near the middle 
to the base and decurrent on the stout elongated glandular 
tomentose but ultimately nearly glabrous petioles, often slightly 
and irregularly divided above into three or four pairs of short 
acute lobes, coarsely doubly serrate, often nearly to the base, 
with glandular incurved or straight teeth; as they unfold 
strongly plicate, tomentose above and below like the young 
branchlets, with a thick coat of hoary tomenttim, and when 
the flowers open covered on the upper surface with short soft 
hairs and villose on the lower surface, and at maturity thin but 
firm in texture, scabrate and dark green above, pale below, 
from 2 to 2% in. long and from 1 to 1% in. wide, with slender 
midribs and primary veins impressed on the upper surface and 
puberulous below, and conspicuous forked secondary veins and 
reticulate veinlets. Flowers about 34 in. in diameter in compact 
many-flowered thick-branched tomentose cymes; bracts and 
bractlets linear, glandular-serrate, caducous ; calyx-tube narrowly 
obconic, coated with thick hoary tomentum, the lobes narrow, 
acuminate, villose, finely glandular-serrate, reflexed after anthe- 
sis; stamens 10; filaments slender, elongated; anthers small; 
styles 5, surrounded at the base by a broad ring of white 
tomentum. Fruit nearly globose and somewhat flattened at the 


