. Botany for young people and common schools. Botany. 48 HOW PLANTS GROW. 136. The shape at the base. This is concerned in all the following sorts : — Heart-shaped, or Cordate; when of the shape in which a heart is painted, the base having a recess or notch, as in Fig. 98. Kidney-shaped, or Reniform ; like heart-shaped, but rounder, and broader than long, as in Fig. 99. Auricled, or Eared; having a small projection or lobe on each side at the base, like a pair of ears, as in Fig. 101. Arrow-shaped, or Arrow-headed; when such lobes at the base are. Heart-shaped, or cordate. Kidney-shaped, or re
. Botany for young people and common schools. Botany. 48 HOW PLANTS GROW. 136. The shape at the base. This is concerned in all the following sorts : — Heart-shaped, or Cordate; when of the shape in which a heart is painted, the base having a recess or notch, as in Fig. 98. Kidney-shaped, or Reniform ; like heart-shaped, but rounder, and broader than long, as in Fig. 99. Auricled, or Eared; having a small projection or lobe on each side at the base, like a pair of ears, as in Fig. 101. Arrow-shaped, or Arrow-headed; when such lobes at the base are. Heart-shaped, or cordate. Kidney-shaped, or reniform. Halberd-shaped, or hastate. pointed and turned backwards, like the base of an arrow-head, as in Fig. 100. Halberd-shaped, or Hastate ; when such lobes point outwards, giving the whole blade the shape of the halberd of the olden time, as in Fig. 102. Shield-shaped, or Peltate; when the footstalk is attached to some part of the lower face of the blade, which may be likened to a shield borne by the hand with the arm extended. Fig. 104 represents the shield-shaped leaf of a Water-Penny- wort. Fig. 103 is the leaf of another species, which is not shield-shaped. A comparison of the two shows how the shield- 103 shaped leaf is made. 137. As to the Apex or Point, Ave have the following terms, the first six of which apply to the base as well as to the apex of a leaf: — Pointed, Taper-pointed, or Acuminate ; narrowed into a tapering tip, as in Fig. 105. Acute ; ending in an acute angle, Fig. 106. Obtuse; ending in an obtuse angle, or with a blunt or rounded apex; as in Fig. 107. Truncate ; as if cut off square at the apex, as in Fig. 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 Gray, Asa, 1810-1888. New York, Ivison, Phinney, Blakeman & co. ; Chicago, S. C. Griggs & co.
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectbotany, bookyear1868
