= Se 
By Thomas Bruges Flower, Esq. 193 
principal lobes, variously and unequally toothed, blunt, pointed, 
veiny ; dark green and smooth above, and covered with a thick and 
remarkably white down beneath. The leaves vary very much in 
d form, and on young luxuriant branches they are almost palmate. 
There are some very fine specimens of this tree at Longleat, above 
a hundred feet in height, and from ten to twelve and up to fifteen 
feet in. circumference, at three or four feet from the ground. 
2. P. tremula, (Linn.) tremulous Poplar. Aspen-tree. Lngl. 
Bot. t. 1909. The petiole being long, and flattened vertically to 
the plane of the leaf, the latter is shaken by the slightest movement 
in the air, when those of other trees are at rest ; hence the quivering 
of an aspen-leaf has become proverbial. 
Locality. Damp woods. Tree Fl. March, April. Area, 1.2.3.4.5. 
Recorded in all the Districts, but scarce in Districts 2and5. A 
smaller tree than P. a/4a, with branches more slender. Leaves nearly 
orbicular, smooth on both sides, broadly toothed. Fertile catkins 2 
inches long, hairy ; their scales palmate and jagged. 
8. P. nigra, (Linn.) black Poplar. Zng/. Bot. t. 1910. 
Locality. Banks of the Avon, and watery places. Tree HM. 
March. Area, 1. 2. 3. 4.5. In all the Districts, but scarcely in- 
digenous. A large tree, of rapid growth, with a thick and somewhat 
spongy bark. eaves triangular, and nearly equilateral, more or 
less rounded at the base; more regularly serrated than in either of 
the preceding species and never lobed. Catkins long, very loose and 
pendulous. The well-known Lombardy Poplar is believed to be a 
cultivated variety of the black Poplar, of Eastern origin, with erect, 
instead of spreading, branches. 
_ Myrica, (Linn.) Sweer Gate. 
Linn, Cl. xxii. Ord. iv. 
Named from muron, sweet ointment, in reference to its fragrance. 
1. M. Gale, (Linn.) Sweet Gale, Bog or Dutch Myrtle. Engl. 
«Bot. t. 562. 
_. Locality. Bogs, and moory ground. Shrub Fl. May. Area, 
1***** 
| South Division. 
1 South-east District.  Landford and Platford Commons. 
VOL. XIII.—NO. XXXVIII. ; P 
