Search results
Results from the WOW.Com Content Network
With an opposite leaf arrangement, two leaves arise from the stem at the same level (at the same node), on opposite sides of the stem. An opposite leaf pair can be thought of as a whorl of two leaves. With an alternate (spiral) pattern, each leaf arises at a different point (node) on the stem. Distichous leaf arrangement in Clivia
The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets). [1] The edge of the leaf may be regular or irregular, and may be smooth or have hair, bristles, or ...
The alternate leaves are usually divided into a petiole and a leaf blade. The smooth or hairy leaf blade is simple or one to two-pinnate. The leaflets are lobed three to eleven times. The leaf margin is smooth to roughly serrated. The lower leaves are 38 to 127 centimetres (15 to 50 inches) long and 25 to 64 cm (10 to 25 in) inches wide.
Meliaceae, the mahogany family, is a flowering plant family of mostly trees and shrubs (and a few herbaceous plants, mangroves) in the order Sapindales.. They are characterised by alternate, usually pinnate leaves without stipules, and by syncarpous, [2] apparently bisexual (but actually mostly cryptically unisexual) flowers borne in panicles, cymes, spikes or clusters.
Alternate-leaved golden-saxifrage is a perennial, mat-forming plant with trailing stems growing to a height of 5 to 15 cm (2 to 6 in). The fragile three-sided stems are hairy on the lower parts of the plant but smooth above. The alternately arranged leaves are stalked, broad and kidney-shaped with a few rounded shallow teeth and a few hairs.
180° (or 1 ⁄ 2): two leaves in one circle (alternate leaves) 120° (or 1 ⁄ 3): three leaves in one circle; 144° (or 2 ⁄ 5): five leaves in two gyres; 135° (or 3 ⁄ 8): eight leaves in three gyres. Most divergence angles are related to the sequence of Fibonacci numbers F n. This sequence begins 1, 1, 2, 3, 5, 8, 13; each term is the ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
English: The medium scale structure of a leaf featuring the major tissues; the upper and lower epithelia (and associated cuticles), the palisade and spongy mesophyll and the guard cells of the stoma. Vascular tissue (veins), made up of xylem, phloem and sheath cells, and example trichromes are also shown.