186 Rhodora [Jurv 
white hairs on the upper surface and pale and glabrous on the lower 
surface; at maturity membranaceous, dark yellow-green and scabrate 
above, pale below, 5-6 cm. long, 3.5—4 cm. wide, with thin yellow 
midribs and primary veins; petioles slender, more or less wing- 
margined at the apex, grooved, glandular at first, with minute decid- 
uous glands, often rose-colored in the autumn, 1.5—2 cm. in length ; 
stipules linear, acuminate, often falcate, glandular, caducous; on 
vigorous shoots leaves long-pointed, coarsely serrate, subcoriaceous, 
often 8 cm. long and 6 cm. wide, with thick rose-colored midribs and 
stout petioles broadly winged to below the middle, and lunate coarsely 
serrate persistent stipules. Flowers on short pedicels in slightly 
villose many-flowered compound corymbs, with long 3-flowered ped- 
uncles from the axils of the two upper leaves; calyx-tube narrow, 
elongated, slightly villose below the middle, the lobes long, slender, 
acuminate, tipped with bright red glands. finely glandular-serrate, 
villose on the inner surface, reflexed after anthesis: stamens 5-10, 
usually 5; anthers purple; styles 2 or 3. Fruit on slender glabrous 
or slightly villose pedicels, in few-fruited drooping clusters, oblong, 
gradually narrowed to the rounded ends, dull greenish red, not fully 
ripe the middle of September, 1 cm. long, about 8 mm. wide; calyx 
small, with a narrow shallow cavity and spreading closely appressed 
nearly entire lobes, villose above the middle and dark red toward the 
base on the upper side; flesh greenish yellow; nutlets 2 or 3, about 
8 mm. long, full and rounded at the ends, ridged on the back, with a 
very broad high slightly grooved ridge, the ventral cavities broad 
but shallow, oblique, widening from the base of the nutlet upward 
to 1ts margins. 
A shrub 20r 3 m. in height with upright stems and stout nearly 
straight branchlets marked by small pale lenticels, light orange green 
when they first appear, orange or reddish brown and lustrous during 
their first season and dull gray-brown the following year, and armed 
with stout slightly curved or straight bright chestnut-brown shining 
spines 2-3.5 cm. in length. Flowers from the roth to the middle of 
June. Fruit probably ripens toward the end of September. 
PROVINCE OF OnTARIO: Nipissing ; not common and the only 
species reported, Milton Jack, June 15 and September 18, 1902. 
Very distinct in the shape and thinness of the leaves, in the oblong 
fruits and in the short stout spines. 
* * Stamens 20. 
Crataegus membranacea, n. sp. Leaves elliptical to obovate, 
or rarely ovate, acute or acuminate, cuneate or occasionally rounded 
at the entire often oblique base, coarsely doubly serrate above, with 
straight glandular teeth, and divided into 4 or 5 pairs of short acumi- 
