. Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. FORM OR FIOUBK. 60 forms, in which there is no distinction of petiole or blade. Such are the acerose (needle-shaped) leaves of the pine, the subulate (awl-shaped) and scale-form leaves of the cedars, etc. MARGIN. The following terms apply to the various modiflcations of the margin, as sucb not affecting the general outline of the leaf. ' " * " ^ ^ f V h h
. Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. FORM OR FIOUBK. 60 forms, in which there is no distinction of petiole or blade. Such are the acerose (needle-shaped) leaves of the pine, the subulate (awl-shaped) and scale-form leaves of the cedars, etc. MARGIN. The following terms apply to the various modiflcations of the margin, as sucb not affecting the general outline of the leaf. ' " * " ^ ^ f V h h I. / dentate; g, serrate; h, lacinlate ; *, incised ; /, erose. ^ 278. Entire, even edged, having the tissue completely filled out. Sometimes a vem runs along the margin, which might otherwise be easily torn, as in the Caladium. But when the marginal tissue is de- ficient, the leaf becomes 279. Dentate, having sharp teeth pointing outward from the centre: serrate, with sharp teeth pointing forwards, like the teeth of a saw ; crenate, with rounded or blunt teeth. The terms denticulate, serrulate crenulate, denote finer indentations of the several kinds; doubly dm- tate, &c., denote that the teeth are themselves toothed. 280 The unddlate, or wavy edge is somewhat different from the repand, bends like the margin of an umbrella. If the veins pro- ject, and are tipped with spines, the leaf becomes spinous. 281. Irregularly divided margins are said to be erose or iaffged laamate or torn, incised or cut. ' 282. Crisped. Often, instead of a deficiency there is a superabun- dance of marginal tissue, denoted by the term crispate or crisped. "*« d e t n K 1,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wood, Alphonso, 1810-1881. New York; Chicago : A. S. Barnes; Troy, N. Y. : H. B. Nims
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, booksubjectpl
