FORMS OF LEAVES. 31 
yields what is called dass, of which coarse matting is 
made, for covering packages, &ec. 
OF THE LEAF AND ITS FORMS. 
82. Leaves have already been noticed as divided into 
simple and compound (par. 11.). 
Simple leaves, may vary from the entire form, or 
that in which the margins are perfect, as in the Lilac 
(pl. 4. f. 1.) to a very divided one, as in the Water 
Cress (pl. 8. f. 3.), or Parsley (pl. 2.f.8.). The following 
are some of the principal forms of simple leaves; 
lanceolate, tapering at each end, as in the common 
Mezereon (pl. 11. f. 1.), and Pink: oval, as in the 
Dog-wood: orbicular, or shield-like, as in the Penny- 
leaf, or Cotyledon, and the garden Nasturtium (f. 2.) : 
sword-shaped, as in the Iris: angular, as in the 
Upright Goosefoot (f. 3.): spear-shaped, as in the 
great Bindweed, or Convolvulus (f. 4.): pinnatifid, or 
deeply lobed, nearly if not quite to % midrib, as in 
the long prickly fruited Poppy (pl. 2. f. 7.): palmi- 
partite, as in the Monkshood (pl. 11. f. 5.). 
33. The leaf, when unprovided. with a leaf-stalk, is 
said to be sessile, or sitting upon the stem: but some- 
times the leaf seems to grow to the stem, as in the 
common Comfrey (f. 6.), in which it appears to run 
down the stem, when the leaf is said to be deeurrent. 
Occasionally some leaves close round the stem at their 
base, when the stem appears to pass through them, as 
in the Honeysuckle, and Hare’s Ear (f. 7.); such a 
leaf is said to be perfoliate. 
84. Of Compound Leaves, the following are the 
