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A leaf ( pl.: leaves) is a principal appendage of the stem of a vascular plant, [ 1] usually borne laterally aboveground 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 name comes from the small prickles that can be found on the lower part of the stem and the midrib of the leaves. The plant is found in fields, places of waste, and roadsides. The leaves of the plant reach out towards the sun and for this reason the plant is sometimes called the Compass Plant.
Chart illustrating leaf morphology terms. The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular or irregular, may be smooth or bearing hair, bristles or spines.
Chrysanthemum – Dendranthema grandiflora [ vi], Chrysanthemum morifolium. (True) cinnamon – Cinnamomum verum. Clove – Syzygium aromaticum. Clover – Trifolium spp. Coakum – Phytolacca americana. Coconut – Cocos nucifera. Coffee plant – Coffea spp. Colic weed – Corydalis flavula. Collard – Symplocarpus foetidus.
List of plants by common name; List of plant family names with etymologies; List of plants known as arugula; List of plants known as breadfruit; List of plants known as bottlebrush; List of plants known as buckthorn; List of plants known as cedar; List of plants known as chickweed; List of plants known as compass plant; List of plants known as ...
Verbena is an herbaceous flowering plant, belonging to the Verbenaceae family, and may be annual or perennial depending on the species. The leaves are usually opposite, simple, and in many species hairy, often densely so. The flowers are small, with five petals, and borne in dense spikes. Typically some shade of blue, they may also be white ...
1. as a name misapplied by gardeners. 2. as an invalid name derived from horticultural writings of confused authorship. husk. Protective outer covering of certain seeds, for example, the leafy outer covering of an ear of maize (corn), the leathery covering of the walnut, or the spiky covering of the chestnut.
In many genera and families, there is a continuous gradation from plants with thin leaves and normal stems to those with very clearly thickened and fleshy leaves or stems. The succulent characteristic becomes meaningless for dividing plants into genera and families. Different sources may classify the same species differently. [14]