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Verbena Urticifolia
''Verbena urticifolia'', known as nettle-leaved vervain or white vervain, is a herbaceous plant in the vervain family (Verbenaceae). It belongs to the "true" vervains of genus ''Verbena''. Description White vervain has opposite, simple leaves on thin, rigid, green stems. The serrated leaves look similar to those of ''Urtica'', which is the reason for the plant being named ''urticifolia''. The small flowers are borne in spikes; they open in summer and unusually for this normally bluish-flowered genus are white. The fruit is a dark-colored capsule with many brown and thin seeds. The entire plant except for the flowers and fruit is covered in stiff bristles. Range White vervain is native to eastern North America, excluding Mexico. Habitat White vervain is commonly found growing individually in disturbed areas with partial shade. It prefers mesic habitats. Relation to other vervains This species may be closest to a group that might include such North American species as '' V. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on the axis of a plant. The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. One can also define an inflorescence as the reproductive portion of a plant that bears a cluster of flowers in a specific pattern. The stem holding the whole inflorescence is called a peduncle. The major axis (incorrectly referred to as the main stem) above the peduncle bearing the flowers or secondary branches is called the rachis. The stalk of each flower in the inflorescence is called a pedicel. A flower that is not part of an inflorescence is called a solitary flower and its stalk is al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Vervain
''Verbena officinalis'', the common vervain or common verbena, is a perennial herb native to Europe. It grows up to 70 cm high, with an upright habitus. The lobed leaves are toothed, and the delicate spikes hold clusters of two-lipped mauve flowers. This plant prefers limey soils; it is occasionally grown as an ornamental plant but perhaps more often for the powerful properties some herbalists ascribe to it. Propagation is by root cuttings or seed. It is widely naturalised outside its native range, for example in North America. Common names and taxonomy It is also known as simpler's joy or holy herb, or more ambiguously as "mosquito plant" or "wild hyssop". The common name "blue vervain" is also sometimes used, but also refers to '' V. hastata''. And of course, being the only member of its genus in much of its range, it is also simply known as "vervain" locally. The common names of ''V. officinalis'' in many Central and Eastern European languages often associate it w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
