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Growing over 10 meters high, [5] it can bloom at a height of around 25 cm. The slender, grooved stems are hairy bald to sparsely downy. The 5 to 6 cm long, triangular foliage leaves distributed on the stem are divided into a petiole and pinnate leaf blade. The petiole is (0.5 to) 1.5 to 3.5 cm long and the rachis is 0.4 to 2 cm long. The ...
The basal leaves and lowest ones on the stems are normally 5 to 10 centimeters (2 to 4 in) in length, but on occasion may be as long as 20 cm (8 in). Their width ranges from 1.5 to 5 cm (0.6 to 2.0 in), but usually do not exceed 2.8 cm (1.1 in). [4] The lower leaves are wider than ones further up the plant and are attached by petioles. [3] On ...
The spermatophytes were traditionally divided into angiosperms, or flowering plants, and gymnosperms, which includes the gnetophytes, cycads, [5] ginkgo, and conifers. Older morphological studies believed in a close relationship between the gnetophytes and the angiosperms, [ 6 ] in particular based on vessel elements .
Leaves long triangular or spade-shaped. Flowers hermaphrodite. → 5 -Leaves spoon-shaped with an entire margin and an indented tip, or divided into three lobes, each with an indented tip, appendages two or three. Functionally male and female flowers on different plants . Flowers with ivory to pale yellow sepals, later with purplish margins.
In ferns and seed plants (including cycads, conifers, flowering plants, etc.) the sporophyte is the dominant generation; the obvious visible plant, whether a small herb or a large tree, is the sporophyte, and the gametophyte is very small. In bryophytes and ferns, the gametophytes are independent, free-living plants, while in seed plants, each ...
The remainder of the vascular plant sections address the higher plants (spermatophytes or seed plants, i.e. gymnosperms and angiosperms or flowering plants). In the higher plants, the terrestrial sporophyte has evolved specialised parts. In essence, they have a lower, underground component and an upper, aerial component.
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 ...
Plants and seeds often contain chemical compounds to discourage herbivores and seed predators. In some cases, these compounds simply taste bad (such as in mustard), but other compounds are toxic or break down into toxic compounds within the digestive system. Children, being smaller than adults, are more susceptible to poisoning by plants and ...