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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]
There are several types or cultivars of lettuce. Three types – leaf, head and cos or romaine – are the most common. [30] There are seven main cultivar groups of lettuce, each including many varieties: Leaf—Also known as looseleaf, cutting or bunching lettuce, [35] this type has loosely bunched leaves and is the most widely planted. It is ...
Aquatic plants are plants that have adapted to living in aquatic environments ( saltwater or freshwater ). They are also referred to as hydrophytes or macrophytes to distinguish them from algae and other microphytes. A macrophyte is a plant that grows in or near water and is either emergent, submergent, or floating.
[2] [3] Therefore, Bryophyllum should be a section of Kalanchoe rather than a separate genus. [4] [5] The number of species within Bryophyllum varies with definitions of this section. Bryophyllum used to include not only species that produce plantlets on the leaf margin, but also many species that lack this character such as K. manginii and K ...
Grain, fruit, and vegetables are basic human foods and have been domesticated for millennia. People use plants for many purposes, such as building materials, ornaments, writing materials, and, in great variety, for medicines. The scientific study of plants is known as botany, a branch of biology .
In the autumn, the leaves die back, and the outer scales of the bulb become dry and brittle, so the crop is normally harvested. If left in the soil over winter, the growing point in the middle of the bulb begins to develop in the spring. New leaves appear, and a long, stout, hollow stem expands, topped by a bract protecting a developing ...
Moringa oleifera is a fast-growing, drought-resistant tree of the family Moringaceae, native to the Indian subcontinent and used extensively in South and Southeast Asia. [2] Common names include moringa, [3] drumstick tree [3] (from the long, slender, triangular seed-pods), horseradish tree [3] (from the taste of the roots, which resembles ...
Diagram of flower parts. In botany, floral morphology is the study of the diversity of forms and structures presented by the flower, which, by definition, is a branch of limited growth that bears the modified leaves responsible for reproduction and protection of the gametes, called floral pieces. [note 1] Fertile leaves or sporophylls carry ...