Search results
Results From The WOW.Com Content Network
Having leaf tissue taper down the petiole to a narrow base and always having some leaf material on each side of the petiole auriculate: auriculatus: leaf base: Having ear-shaped appendages reaching beyond the attachment to the petiole or stem (in case of a seated leaf) caudate: caudatus: leaf tip: Tailed at the apex cirrus, cirrate: leaf tip
Approaching white in color, as in a leaf covered with white down or wool. canopy Branches and foliage of a tree; the crown. Also refers to the protective upper layer of a forest. Compare trunk. capillary 1. Tube, pore, or passage with a narrow, internal cross-section. 2. Slender; hair-like. capitate 1.
A single leaf of marram grass, showing the rolled leaf which reduces water loss 100x magnified cross section of a curled leaf. Ammophila arenaria is a perennial plant, which means it can live for many years. It mainly grows in spring when leaf production exceeds leaf senescence.
Acrodromous – the veins run parallel to the leaf edge and fuse at the leaf tip. Actinodromous – the main veins of a leaf radiate from the tip of the petiole. Brochidodromous – the veins turn away from the leaf edge to join the next higher vein. Campylodromous – secondary veins diverge at the base of the lamina and rejoin at the tip.
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
A leaf (pl.: leaves) is a principal appendage of the stem of a vascular plant, [1] usually borne laterally above ground and specialized for photosynthesis.Leaves are collectively called foliage, as in "autumn foliage", [2] [3] while the leaves, stem, flower, and fruit collectively form the shoot system. [4]
The stem anatomy of ferns is more complicated than that of dicots because fern stems often have one or more leaf gaps in cross section. A leaf gap is where the vascular tissue branches off to a frond. In cross section, the vascular tissue does not form a complete cylinder where a leaf gap occurs.
English: Pinus leaf cross section. A resin canal that is central to spongy mesophyll, has a lumen lined with resin producing parenchyma cells. Date: 28 June 2016: