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Leaf whorls on a herbaceous Lilium michiganense Leaf whorls on a woody tree, Brabejum stellatifolium In botany, a whorl or verticil is a whorled arrangement of leaves , sepals , petals , stamens , or carpels that radiate from a single point and surround or wrap around the stem or stalk.
Examples of trees with whorled phyllotaxis are Brabejum stellatifolium [4] and the related genus Macadamia. [5] A whorl can occur as a basal structure where all the leaves are attached at the base of the shoot and the internodes are small or nonexistent. A basal whorl with a large number of leaves spread out in a circle is called a rosette.
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 (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets). [1]
Aristolochia (English: / ə ˌ r ɪ s t ə ˈ l oʊ k i ə /) is a large plant genus with over 500 species that is the type genus of the family Aristolochiaceae.Its members are commonly known as birthwort, pipevine or Dutchman's pipe and are widespread and occur in the most diverse climates.
Plant propagation is the process of plant reproduction of a species or cultivar, and it can be sexual or asexual. It can happen through the use of vegetative parts of the plants, such as leaves, stems, and roots to produce new plants or through growth from specialized vegetative plant parts.
It sends out new green heart-shaped leaves after it blooms. The bloom period is January through April. [3] The plant produces large, green-to-pale-brown, curving pipe-shaped flowers, with purple veins and a yellow-to-red lining. [5] The U-shaped flowers produce winged capsular green fruits. [5]
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The lobed leaves come from the base of the plant, while the unlobed leaves come from the top of the plant. There is variation among the parts of a mature plant resulting from the relative position where the organ is produced. For example, along a new branch the leaves may vary in a consistent pattern along the branch.