CRATAEGUS IN MISSOURI.—II. 83 
middle, often 7 cm. long and 4-5 cm. wide. Flowers 1.8 cm. in diam- 
eter, on stout nearly glabrous pedicels, in dense usually 3-8-flowered 
slightly villose corymbs, the lower peduncles from the axils of upper 
leaves; calyx-tube narrowly obconic, glabrous, the lobes long, slender, 
acuminate, coarsely glandular-serrate, glabrous on the outer surface, 
slightly hairy on the inner surface, reflexed after anthesis; stamens 
20; anthers dark red or purple; styles usually 3. Fruit ripening in 
October, on long pedicels, in few-fruited clusters, short-oblong, dull 
orange-red, 8-10 mm. long and 7-9 mm. in diameter; calyx prominent, 
with a distinct neck and a deep narrow cavity, the lobes mostly de- 
ciduous from the ripe fruit; flesh thin, dry and mealy; nutlets usually 
3, rounded at the ends, rounded and ridged on the back, with abroad low 
grooved ridge, penetrated on their inner faces by shallow cavities, 
about 7 mm. long and 3 mm. wide. 
A small tree 1-2.5 m. high, with stems covered with dark 
gray slightly scaly bark, few erect intricately arranged 
branches and slender nearly straight branchlets dark orange- 
green and slightly villose when they first appear, becoming 
glabrous and dark dull chestnut brown during their first 
season and light or dark grayish brown the following year, 
and armed with slender nearly straight chestnut brown 
spines long-persistent on the stems and upper branches. 
In moist rich soil at the base of hills on Turkey Creek, 
near Joplin, Joplin County, common (LZ. J. Palmer, 46A, 
type, May 18 and September 21, 1909; 46, May 15 and Sep- 
tember 21, 1909; 46B, sometimes with as many as 24 flow- 
ers in a corymb, May 13, 1909; 46C, May 20 and Septem- 
ber 21, 1909) ; Scotland, Jasper County (EZ. J. Palmer, 47, 
May 18, 1909). 
From the other thin-leaved species of Tomentosae, Cratae- 
gus sumulata differs in the shape of the much smaller leaves 
which become entirely glabrous, in the nearly glabrous 
corymbs, and the absence of hairs on the pedicels and 
calyx-tube. The plants in habit and foliage look like a 
thin-leaved species of Crus-galli, for which it might be easily 
mistaken, but the cavities on the inner faces of the nutlets 
show its true position. 
