482 NORTH AMERICAN FLORA [VOLUME 22 
veined, 2-6 cm. long, acute or short-acuminate, slightly oblique; pedicels finely pubescent; 
sepals spreading or reflexed, oblong or obovate, about 6 mm. long, somewhat enlarging in 
fruit, incised above the middle; filaments white, longer than the sepals; anthers short, sub- 
introrse; ovaries gibbous-ovate, grayish-sericeous; styles glabrous; drupelets obliquely ovate, 
4 mm. long. 
TYPE LOCALITY: In shady rugged places near Tuscaloosa, Alabama. 
DISTRIBUTION: Type locality and vicinity. ; 
ILLUSTRATIONS: Mem. Am. Acad. II. 6: pl. 30; Bot. Mag. pl. 6806; Lounsberry, S. Wild FI. 
pl. 71; Meehan, Nat. FI. II. 2: pl. 3. 
Tribe 17. OSMARONIEAE. Shrubs or trees, with faint smell of bitter- 
almond, alternate simple leaves, and membranous, yellowish, deciduous 
stipules. Flowers polygamo-dioecious, in racemes with membranous deciduous 
oblanceolate bracts. Hypanthium turbinate or obconic. Sepals 5, lanceolate, 
more or less petaloid. Petals 5, obovate to oblong. Stamens 15 in two series; 
outer series of 10 stamens inserted on the rim of the hypanthium, the 5 inner 
ones inserted in the tube of the same; filaments short and incurved; anthers 
subrotund, didymous, in the pistillate flowers abortive. Pistils 5; or in the 
staminate flowers none or rudimentary; ovaries oblique; styles subterminal, 
filiform; stigma terminal, dilated. Fruit drupaceous; drupelets, by abortion, 
usually 1-3. Ovules 2, collateral. Seeds usually 1; endosperm none; cotyle- 
dons conduplicate. [An aberrent tribe, related to Amygdalaceae; perhaps a 
distinct family, unique in the Rosales on account of the structure of the 
cotyledons. | 
56. OSMARONIA Greene, Pittonia 2: 189. 1891. 
Nuttallia T. & G.; H. & A. Bot. Beech. Voy. 336. 1838. Not Nuttallia Raf. 1818. 
Characters of the tribe. 
Type species, Nuttallia cerasiformis T. & G. 
1. Osmaronia cerasiformis (T. & G.) Greene, Pittonia 2:191. 1891. 
Nuttallia cerasiformis 'T. & G.; H. & A. Bot. Beech. Voy. 336. 1838. 
? Exochorda Davidiana Baillon, Adansonia 9: 149. 1869 
Osmaronia cerasiformis lancifolia Greene, Pittonia 5: 309. 1905. 
Osmaronia cerasiformis nigra Greene, Pittonia 5: 309. 1905. 
Osmaronia obtusa Greene, Pittonia 5: 310. 1905. 
Osmaronia bracteosa Greene, Pittonia 5: 310. 1905. 
Osmaronia demissa Greene, Pittonia 5:310. 1905. 
Osmaronia laurina Greene, Pittonia 5: 311. 1905. 
Osmaronia padifolia Greene, Pittonia 5: 311. 1905. 
A small tree or shrub, 1-5 m. high; bark brown, smooth; leaves oblong, entire, thin, 
slightly wavy, 5-10 cm. long, elliptic or oblanceolate, thin, paler beneath, sparingly pubescent 
beneath when young, soon glabrous, acute at the base, acute or obtuse and often mucronate 
at the apex; racemes 3-10 cm. long; bracts yellowish, membranous, deciduous, oblanceolate to 
linear-oblong, 5-10 mm. long; flowers usually subtended by 1 or 2 similar bractlets; hypanthium 
about 5 mm. deep and about as wide; sepals 3 mm. long; petals elliptic or obovate, short-clawed, 
4-5 mm. long, white; fruit black, with more or less distinct bloom, about 1 cm. long, the 
exocarp more or less fleshy, bitter. 
TYPE LOCALITY: On the Columbia River, probably Washington. 
DISTRIBUTION: British Columbia to California. 
ILLUSTRATIONS: H. & A. Bot. Beech. Voy. pl. 82; Belg. Hort. 8: pl. 53; Garden 34: 78; Gard. 
Chron. II. 19: f. 44; III. 19: f. 75. 
Tribe 18. ROSEAE. Shrubs or vines, usually prickly. Leaves alternate, 
pinnate with more or less adnate stipules or simple without stipules, and 
