72 MISSOURI BOTANICAL GARDEN. 
Crataegus polyclada, n. sp. 
Glabrous with the exception of the hairs on the young leaves. 
Leaves oblong-obovate, rounded and apiculate at the apex, gradually 
narrowed to the concave-cuneate entire base, and finely crenately ser- 
rate above the middle, with gland-tipped teeth; deeply tinged with 
red and slightly hairy along the upper sides of the midribs when they 
unfold; nearly fully grown when the flowers open the first of May 
and then thin, yellow-green, glabrous and lustrous on the upper sur- 
face, dull and rather paler on the lower surface, and at maturity thin 
but firm in texture, yellow-green and lustrous above, dull below, 5-6 
em. long and 2.5-3 em. wide, with prominent but thin midribs and 
primary veins; petioles slender, narrowly wing-margined nearly to the 
middle, sparingly glandular early in the season, 8-10 mm. in length; 
leaves on vigorous shoots oval to slightly obovate, acuminate or 
rounded at the apex, cuneate at the base, 5-6 cm. long and about 
3 cm. wide. Flowers 1.2-1.4 cm. in diameter, on long slender pedicels, 
in compact mostly 12-20-flowered corymbs, the lower peduncles from 
the axils of upper leaves; calyx-tube narrowly obconic, the lobes sep- 
arated by wide sinuses, narrow, acuminate, entire or minutely dentate 
near the middle, reflexed after anthesis; stamens 20; anthers white; 
styles 2. Fruit ripening at the end of September, on slender pedicels, 
in drooping clusters, short-oblong, sometimes slightly ovate, rounded 
at the ends, orange-red, marked by numerous large pale dots, about 
1.2 em. long and 1 cm. wide; calyx little enlarged, with a narrow deep 
cavity rounded in the bottom, and spreading closely appressed per- 
sistent lobes; flesh thin, dry and mealy; nutlets 2, rounded at the ends, 
rounded and only slightly ridged on the back, about 8 mm. long and 
3.5 mm. wide. 
A tree with a tall trunk sometimes 2.5 dm. in diameter, 
covered with rough scaly gray bark, large wide-spreading 
branches forming a round head, and slender slightly zigzag 
branchlets light orange-green and marked by numerous 
large pale lénticels when they first appear, becoming orange 
or reddish brown and lustrous by the end of their first sea- 
son and dull gray-brown the following year, and armed with 
numerous slender nearly straight chestnut brown shining 
spines 5-5.5 cm. long, long-persistent and becoming forked 
on old trunks. 
Near Springfield, Greene County (J. H. Kellogg, 119, 
type, May 1 and September 25, 1908). 
