HEXANDRIA. MONOGYNTA. O1t 
Shrubs with alternate leaves, often collécted in fasci- 
cles, surrounded at the base by imbricated gemmaceous 
scales, and subtended by a simple ortrifid spine; flowers 
issuing from the middle of the fascicles, racemose, subco- 
rymbose or solitary. (The sensitive property existing in 
the filaments of this genus appears to be mechanically 
accounted for by. Persoon, who remarks, that the filaments 
at first adhere to the-glands, and afterwards rise up with 
elasticity; in the following genus, however, where no 
glands exist, the character of sensibility alone’ must be 
admitted.) 
Seecies. 1. B. canadensis. Older branches covered 
with small verrucose punctures; spines -trifid; leaves 
_vather small, oblong-obovate, distantly serrate; racemes 
_ simple, recurved, subcorymbose; leaves of the calix very 
unequal, 5 interior, oboval, twice the length cf the exte- 
rior; berry subglobose.—Oss. A smaller and later flower- 
ing species than B. vulgaris, from which it is sufficiently 
4 
distinct. Stems and roots yellow; spines tr.fid, divaricate. 
_ Racemes partly corymbose, horizontal or recurved, not 
pendulous, lower pedicells often new an inch long. Flow- 
ers mostly bibracteate, and of an agreeable odor; leaves 
of the calix paler than the corolla, yellow, conspicuously 
unequal, exterior oval, about half the length of the inte- 
rior, interior cuneate-oboval, longer than the corolla. Pe- 
tals cuneate-oval, bifidly emarginate, deep yellow, biglan- 
dular near the base. Filaments of the stamina irritable. 
Germ 2 to 4-seeded. Berry subglobose, seldom oblong, | 
miniate, 2 rarely 3-seeded.—Has. On the Alleghany moun-— 
tains, from Canada.to Georgia; also in Tennessee, where 
it appears almost scmpervirent. 
Of this genus, which like Aibes may be considered sub- 
alpine, there is 1 specic s in Europe, extending to the Le- 
vant, and as far as Lebanon in Syria, a second indigenous 
to the isle of Crete, and &. sidirica to the Altaic Alps; 
but the mountains of Sonth America already afford no 
less than 12 species of this interesting genus, several of 
them peculiar to the frigid climate of the Straits of Ma- 
gellan, and the rocks of Terra del Fuego. 
307. * MAHONIA.{ 
Culix 6-leaved, unequal. Petals 6. Neeta- 
riferous glands none. Filaments ivvitable, each 
* in memory of the late Mr. sernard McMahon, whose ar- 
ent attachment to Botany, and successful introduction of use- 
claim to public esteem. 
horticulture inten: Cleo ee ee 
