CRATAEGUS IN MISSOURI.—I1. Tr 
VIRIDES: anthers pink. 
Crataegus Davisii, n. sp. 
Leaves ovate to oval, acute or acuminate, gradually narrowed and 
concave-cuneate at the entire base, sharply often doubly serrate 
above, with straight or incurved glandular teeth, and sometimes 
slightly divided above the middle into short broad lobes; when the 
flowers open, from the 15th to the 20th of May, glabrous with the ex- 
ception of a few hairs along the upper side of the midribs and in the 
axils of the veins below, and at maturity thin, glabrous, yellow-green, 
lustrous on the upper surface, dull and paler on the lower surface, 
4-5.5 em. long and 2.5-3.5 cm. wide, with slender midribs and five or 
six pairs of thin primary veins; petioles slender, slightly wing-mar- 
gined at the apex, sparingly villose while young, becoming glabrous, 
dark red especially on the lower side in the autumn, 1.8-2.4 cm. in 
length; leaves on vigorous shoots ovate, acute or abruptly acuminate, 
cuneate at the broad base, coarsely serrate, slightly, or often deeply 
and irregularly jlobed by narrow sinuses sometimes extending nearly 
to the midrib, with stouter petioles widely wing-margined toward 
the apex and 2-3.5 cm. long, and lunate, coarsely serrate persistent 
stipules. Flowers 1.5-1.7 cm. in diameter, on long slender glabrous 
pedicels, in few-flowered corymbs; calyx-tube narrowly obconic, the 
lobes slender, acuminate, entire or occasionally provided with a few 
minute teeth, glabrous, reflexed after anthesis; stamens 15-20; anthers 
pink; styles 5. Fruit ripening in October and persistent during the 
winter, on erect or spreading pedicels, subglobose, often rather broader 
than high, crimson, 7 or 8 mm. in diameter; calyx-tube broad and shal- 
low, the lobes deciduous from the ripe fruit; flesh thin, rather succu- 
lent; nutlets 5, thin, rounded at the ends and on the back, 4-5 mm. 
long and about 2 mm. wide. 
A bushy tree 7 or 8 m. high, with a trunk often 18-20 
cm. in diameter, covered with thin smooth pale gray bark 
exfoliating in large plates, small spreading branches form- 
ing a broad round-topped head, sometimes 10 m. in diam- 
eter, and slender nearly straight branchlets slightly villose 
when they first appear, soon glabrous, dark orange-brown, 
lustrous and marked by many small pale lenticels at the 
end of their first season, usually unarmed or occasionally 
furnished with slender straight spines 5-6.5 em. long. 
In rich soil on high rolling rocky hillsides above the 
bluffs of the Mississippi River, north of Hannibal, Marion 
County (John Davis, 99, type, Riverview Park, May 20, 
