What are stipulate leaves?
Stipules are considered part of the anatomy of the leaf of a typical flowering plant, although in many species they may be inconspicuous —or sometimes entirely absent, and the leaf is then termed exstipulate.
Is an example of stipulate leaf?
Stipulate: The leaf with stipules, e.g., rose, Ixora, Exstipulate: The leaves having no stipules, e.g., Ipomoea.
Which plants have stipulate leaves?
In plants such as Smilax, the leaves are stipulated, as they possess reduced leaf-like structures known as stipule beneath the petiole.
What are the types of leaf base?
Acute bases have a sharp-pointed base, with opposite sides forming an angle between 45 and 90 degrees at the position where the lamina joins the petiole. Obtuse bases have a blunt or narrowly rounded base with opposite sides forming an angle greater than 90 degrees at the position where the lamina joins the petiole.
What is stipulate and exstipulate leaf?
(i) Leaves with stipules are called stipulate leaves. (ii) Leaves without stipules are called exstipulate or estipulate leaves.
What is leaf base?
The leaf base is the slightly expanded area where the leaf attaches to the stem. The paired stipules, when present, are located on each side of the leaf base and may resemble scales, spines, glands,… In angiosperm: Leaves.
What is Lyrate leaf?
Definitions of lyrate leaf. a simple leaf having curvature suggestive of a lyre. type of: simple leaf. a leaf that is not divided into parts.
What is Decussate leaf?
Definition. Referring to opposite leaves arranged with each succeeding pair at right angles to the pairs below and above them.
What is Pulvinus leaf base?
A pulvinus (pl. pulvini) is a joint-like thickening at the base of a plant leaf or leaflet that facilitates growth-independent (nyctinastic and thigmonastic) movement. Pulvini are common, for example, in members of the bean family Fabaceae (Leguminosae) and the prayer plant family Marantaceae.
What is leaf shape?
Leaf shape can vary considerably. The most common shapes include oval, truncate, elliptical, lancolate, and linear. Leaf tips and bases may also be unique, with names based on their shapes. Leaf arrangement is mainly limited to two basic petiole attachments: simple and compound.