. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. retains its vigor year after year. Evenperennials, then, may not live always ; and thereare characteristic differences in their which remain soft and non-woody are bleeding-heart,— and every perennial whichdies to the ground in the fall,— is an herbaceousperennial. 493o. The horticulturist is well aware that perennial plants mayhave only a short span of life ; else why does he renew his bedsof grass- pinks, columbines, bluebells, hollyhocks, hardy chrysanthe-mums, an
. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. retains its vigor year after year. Evenperennials, then, may not live always ; and thereare characteristic differences in their which remain soft and non-woody are bleeding-heart,— and every perennial whichdies to the ground in the fall,— is an herbaceousperennial. 493o. The horticulturist is well aware that perennial plants mayhave only a short span of life ; else why does he renew his bedsof grass- pinks, columbines, bluebells, hollyhocks, hardy chrysanthe-mums, and the like, after they have flowered two or three years? 4936. Flowers which are technically known as annuals amonggardeners may be annuals or plur-annuals, or biennials, or even per-ennials which bloom freely the first year from seed. LXXVI. THE STATURE AND HABIT OF PLANTS 494. The cherry (Figs. 16, 17), oak, maple,have a single trunk or stem, and we have seen TMH STAT UBS AND HABIT OF PLANTS 389 (Obs. iv.) that the side branches are lopped ofE orsuppressed by competition among themselves and. Fig. prostrate habit of mayflower. with other plants. Plants with a central shaft ortrunk, and a more or less elevated head, are trees. 494a. Is it necessary that a cherry or basswood, or other tree,shall grow to a single trunk ? If a cherry or peach tree were togrow in the garden wholly without pruning from the first, mightit have more than one trunk ? 495. In the sumac (Fig. 11) the shaft or leadersoon disappears. Compare the lilac and snowball. 390 JjM!SSO]fS WITH PLANTS These are diffuse and low growers, with no elevatedhead. They are bushes or shrubs. 496. The mayflower or epigaea (Pig. 409) liesupon the ground from the first, making no effortto grow upright. It is prostrate or are, then, two general types of stature,—thevertical and the horizontal; but there is every inter-mediate gradation. 496a. The general appearance of a plant is called its habit.
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