840 
DKECIA HEXANDRIA. 
Class XXII. 
2086. MA'BA. J. Maba. 
13957 buxifolia P. S. Box-leaved 
Ebenacece. 
1| ... Y 
Sp. 1—5. 
E.Indies 1810. 
S s.p Rox. cor. 1. 1. 45 
OCTANDRIA. 
2087. PO'PULUS. W. 
13958 alba W. 
13959 canescens W. 
13960 trepida W. 
13961 tremula IV. 
13962 laevigata W. 
13963 grffl'ca W. 
13964 nigra IV. 
13965 betulifolia Ph. 
hudsonica Mich. 
13966 dilatata IV. 
13967 rnonilitera W. _ 
P. grandidentata Midi. 
13968 aclades'ca Lindl. black Italian ^ 
13969 angulata IV. Carolina ^ 
13970 balsamifera W. Tacamaliac 3f 
13971 macrophylla Lindl. Ontario ^ 
13972 candicans W. heart-leaved ^ 
13973 heterophylla W. various-leaved ^ 
Poplar. 
Abele Tree - 
gray 
Trembling Americ.- 
Aspen - 
smooth - 
Athenian \ 
black ■ 
black American; 
Lombardy 
Canadian = 
Amentacece. 
tm 
40 
mr.ap 
Ap 
tm 
40 
mr.ap 
Ap 
tm 
30 
Ap 
tm 
50 
mr.ap 
Ap 
tm 
80 
mr.ap 
Ap 
tm 
40 
mr.ap 
Ap 
mr.ap 
Ap 
tm 
40 
mr.ap 
Ap 
tm 
70 
mr.ap 
Ap 
tm 
70 
my 
Ap 
tm 
70 
my 
Ap 
tm 
80 
mr 
Ap 
tm 
70 
ap 
Ap 
tm 
70 
Ap 
tm 
50 
mr 
Ap 
tm 
70 
ap.my 
Ap 
Sp. 16. 
Britain moi.w. Sk co 
England wat.pl. Sk co 
N. Amer. 181'i. C co 
Britain moi.w. Sk co 
N. Amer. 1769. G co 
Archipel. 1779 C co 
Britain wat.pl. C co 
N. Amer. ... C co 
Italy 1758. 
Canada 1772. 
N. Amer. ... 
Carolina 1738. 
N. Amer. 1692. 
N. Amer. 1820. 
N. Amer. 1772. 
N Amer. 1765. 
Eng. bot. 1618 
Eng. bot. 1619 
Mic.arb.3. t.S.f.l 
Eng. bot. 1909 
Mich, arb.3. t.ll 
Duh. ar.l84. t.54 
Eng. bot. 1910 
Mi.arb.S.t.lO.f.l 
CO Dend. brit. 102 
Mi.a.3.p.302.t.l2 
Mic.ar.3. t.l3. f.l 
Cat. car. 1. t. 34 
Mich. arb. 3. t. 9 
ENNEANDRIA. 
2088. MERCURIA'LIS. W. Mercury. 
13974 perennis IV. perennial ^ w 
13975 ambigua W. doubtful Q w 
13976 annua W annual 
13957 
EuphorbiacecB. Sp. 5 — 7. 
1 ap.my G Britain woods. D s.l 
1 jl.au G Spain 1806. S co 
G Britain rub. S co 
Eng. bot. 1872 
Lin.fil.dec.l. t. 
Eng. bot. 559 
mm 13961 
13965 
History, Use, Propagation, Culture, 
2085. Maba. The name given to the plant by the natives of Tonga-Tabu, according to Forster. {Gen. 61.) 
This shrub or small tree produces edible berries very well tasted. The wood is dark colored, remarkably 
hard and durable, and where its size will admit, is employed for such uses as require the most durable, com- 
pact, and heavy timber. 
2U86. Populus. In ancient times the public places of Rome were decorated with rows of this tree, whence 
it came to be called arbor populi, as being a tree peculiarly appropriated to the people. But Bullet asserts, 
that the Poplar has obtained its name from the constant motion of the leaves, which are in a perpetual state of 
agitation like the populace. All the species are rapid-growing soft-wooded timber trees, some of which attain 
a very great size. P. alba is one of the most valuable of the British species. The leaves of the com- 
mon gray poplar are of a blackish-green above, but having a thick white cotton underneath ; they are 
about three inches long, on petioles a foot in length. The leaves of the Abele are about double the size, and 
divided into three, four, or five lobes. The leaves of the gray poplar are also larger more deeply lobed, and 
the under-side of the leaves and young shoots are covered with a hoary down. The Abele is said to have 
been introduced from Flanders, and the hoary poplar to have been originated in this country. The timber is 
of great value for all sorts of wooden vessels, especially butchers' trays. It is of quick growth, soft, white, 
and stringy, and little subject to swell or shrink. It makes beautiful floors and turners' ware. Some of the 
finest Abeles in England are at Hartwell near Aylesbury. 
P. tremula is commonly called the asp, from the German espe, which is the general name for all poplars, is 
a rapid-growing tree in almost any soil or situation : but the numerous shoots of the roots spread so near the 
surface that they will not permit any thing else to grow there. The wood is extremely light, white, smooth, soft, 
and durable in the air. It may be used for the same purposes as that of the Abele. The bark is the favorite 
cod of beavers. On the leaves and leafstalks may sometimes be seen red glandular substances about the size 
of a pea, which are the nests of Tipula juniperina. P. nigra has a naked lofty trunk covered with an ash-colored 
bark, and a regular handsome head. It is a tree of quick growth, and on the banks of rivers and in moist 
situations it grows up to a great height in a short time. The bark is light like cork, and is sometimes used 
by fishermen to float their nets. The timber is light and soft, fit for the turner and pattenmaker, and excel- 
lent for flooring-boards. These boards are much slower in taking fire than those of resinous trees ; they 
smoke a long time before they burst into a flame : of course the wood is bad for fuel. Many species of in- 
sects are supported by this and the other poplars. The red substance like berries upon the leafstalks of this 
species are occasioned by the Aphis Bursonia. The leaves and young shoots are gathered in Sweden and other 
parts of Europe during the month of October and dried, to be given as fodder to the sheep in winter. The 
practice is as old as the time of the Romans ; who, as well as the modern Italians, planted this tree for their 
vines to run on. In Kamchatka the inhabitants are sometimes reduced to the necessity of converting the inner 
bark into bread. Schefffer made paper from the cotton down of the ieeds. The buds both of this and the white 
poplar smell very pleasant early in the spring, and being pressed between the ringers yield a balsamic resinous 
substance, which, extracted by spirits of wine, smells like storax. A drachm of this tincture in broth is 
administered in internal ulcers and excoriations. 
The black Italian poplar, so much recommended by Pontey, and said by him to have been Intro- 
