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The Cornaceae are a cosmopolitan family of flowering plants in the order Cornales.The family contains approximately 85 species in two genera, [1] Alangium and Cornus.They are mostly trees and shrubs, which may be deciduous or evergreen, although a few species are perennial herbs.
Cornus is a genus of about 30–60 species [Note 1] of woody plants in the family Cornaceae, commonly known as dogwoods or cornels, which can generally be distinguished by their blossoms, berries, and distinctive bark. [3] Most are deciduous trees or shrubs, but a few species are nearly herbaceous perennial subshrubs, and some species are ...
Maize (Zea mays, Poaceae) is the most widely cultivated C 4 plant.[1]In botany, C 4 carbon fixation is one of three known methods of photosynthesis used by plants. C 4 plants increase their photosynthetic efficiency by reducing or suppressing photorespiration, which mainly occurs under low atmospheric CO 2 concentration, high light, high temperature, drought, and salinity.
The oat (Avena sativa), sometimes called the common oat, is a species of cereal grain grown for its seed, which is known by the same name (usually in the plural). Oats appear to have been domesticated as a secondary crop, as their seeds resembled those of other cereals closely enough for them to be included by early cultivators.
Zea species are used as food plants by the larvae (caterpillars) of some Lepidopteran species including (in the Americas) the fall armyworm (Spodoptera frugiperda), the corn earworm (Helicoverpa zea), and the stem borers Diatraea and Chilo; in the Old World, it is attacked by the double-striped pug, the cutworms heart and club and heart and ...
The flowers are usually hermaphroditic—maize being an important exception—and mainly anemophilous or wind-pollinated, although insects occasionally play a role. [10] The perianth is reduced to two scales, called lodicules , [ 8 ] : 11 that expand and contract to spread the lemma and palea; these are generally interpreted to be modified sepals.
Avena is a genus of Eurasian and African plants [5] in the grass family.Collectively known as the oats, they include some species which have been cultivated for thousands of years as a food source for humans and livestock. [6]
Plants with more than one significant human use may be listed in multiple categories. Plants are considered domesticated when their life cycle , behavior , or appearance has been significantly altered as a result of being under artificial selection by humans for multiple generations (see the main article on domestication for more information).