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Compound leaves may be pinnate with pinnae (leaflets) on both sides of a rachis (axis), or may be palmate with multiple leaflets arising from a single point. [1] Leaf structure is described by several terms that include: Bipinnate leaf anatomy with labels showing alternative usages A ternate compound leaf with a petiole but no rachis (or rachillae)
Some apply it to the leaflets of a pinna, especially the leaflets of bipinnate or tripinnate leaves. [7] Others also or alternatively apply it to second or third order divisions of a bipinnate or tripinnate leaf. [8] It is the ultimate free division (or leaflet) of a compound leaf, or a pinnate subdivision of a multipinnate leaf.
A compound leaf has a fully subdivided blade, ... Bipinnately compound Leaves are twice divided: ... Kranz leaf anatomy in plants which perform C 4 carbon fixation;
The leaves are bipinnately compound, with one or two pinnae pairs, and 10–26 leaflets per pinna. The petioles are also prickly. Pedunculate (stalked) pale pink or purple flower heads arise from the leaf axils in mid-summer with more and more flowers as the plant gets older. A single flower survives for less than a day, and usually dies ...
Its leaves are bipinnately compound, up to 5 - 9 of mostly opposite pinnae and each pinnae having 12 - 24 leaflets. Leaflets alternate, can reach 2 cm long and 1 cm wide, they are narrowly oblong to elliptic in shape and rounded at both the apex and the base. [ 5 ]
(of a compound leaf) Having precisely two leaflet s, usually in a symmetrical pair, e.g. a leaf of Colophospermum mopane. Compare jugate lobed leaf, e.g. most species of Bauhinia. bifusiform Fusiform with a pinch in the middle. bilabiate Having two lips, e.g. the form of the petal s in many irregular flowers. bilateral 1.
Leaves, up to 45 cm long, alternate, bipinnately compound in arrangement, 9-13 pairs of opposite pinnae with 8-14 pairs of leaflets per pinnae, leaflets are rhombic in shape; stipule is 3–5 mm long and petiole can be up to 8 cm long. [2]
Macroneuropteris scheuchzeri specimen clearly showing the hair-like structures on the leaves. The foliage of the Macroneuropteris species consists of very large frond-like leaves that are bipartite (divided in two) near the base, forming two large bipinnately compound parts (see illustration). These compound fronds can be as large as several ...