Pollen - City

Species - Chenopodium


Spring - Fall
Chenopodium species are annual or perennial herbs, shrubs or small trees. They rely mostly on alkaline soils. They are non-aromatic, but sometimes smelly. Young stems and leaves are often covered with vesicular spherical hairs, so that pharyngitis occurs. In nature, these trichomes persist, later collapse and become cormorants. The branches grow straight, climb, bend or scratch. The lateral branches are alternating (the lowest branches may be almost opposite). The alternating or opposite leaves are petiolate. Its thin or small fleshy petiole linear, diamond or triangular, with round or serrated or lobed edges. The inflorescences are terminal and lateral. They consist of prickly or panicularly arranged glomeruli in flowers. The plants are monoecious (rarely dioecious). In monoecious plants, the flowers are dimorphic or pistil. The flowers consist of (4-) 5 parts of ingrown inflorescences, basally or near the middle, mostly glabrous margins, and have a round to keel-like ridge; almost always 5 stems and an ovary with 2 stigmas. In fruits, parts of the inflorescences are sometimes colored but usually unchanged, somewhat dense or scattered over the fruits. The pericarp is quite membranous or sometimes juicy, it adheres or loosely covers the seed. Horizontally oriented seeds depressively spherical to lenticular, with a round to subacute margin. The black seed coat is almost smooth to finely striped, rugular or pitted.
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Image from Wikipedia