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 

 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. Engl. 

 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 El. Marc h, April. Area, 1. 2.3.4.5. 

 Recorded in all the Districts, but scarce in Districts 2 and 5. A 

 smaller tree than P. alba, with branches more slender. Leaves nearly 

 orbicular, smooth on both sides, broadly toothed. Fertile catkins 2 

 inches long, hairy ; their scales palmate and jagged. 



3. P. nigra, (Linn.) black Poplar. Engl. Bot. t. 1910. 

 Locality. Banks of the Avon, and watery places. Tree El. 



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. Leaves 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 Lonibardy Poplar is believed to be a 

 cultivated variety of the black Poplar, of Eastern origin, with erect, 

 instead of spreading, branches. 



Myrica, (Linn.) Sweet Gale. 

 Linn. CI. 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 El. May. Area, 

 South Division. 



1 South-east District. Landford and Platford Commons. 

 VOL. XIII. — no. xxxviii. r 



