|
Tanacetum Niveum
''Tanacetum'' is a genus of about 160 species of flowering plants in the aster family, Asteraceae, native to many regions of the Northern Hemisphere.''Tanacetum''. Flora of North America. They are known commonly as tansies.''Tanacetum''. Integrated Taxonomic Information System (ITIS). The name tansy can refer specifically to '''', which may be called the common tansy or garden tansy for clarity. The generic name ''Tanacetum'' means 'immortality' in |
Tanacetum Vulgare
Tansy (''Tanacetum vulgare'') is a perennial, herbaceous flowering plant in the genus ''Tanacetum'' in the Asteraceae, aster family, native to temperate Europe and Asia. It has been introduced to other parts of the world, including North America, and in some areas has become Invasive species, invasive. It is also known as common tansy, bitter buttons, cow bitter, or golden buttons. The Latin word ''vulgare'' means "common". Description Tansy is a flowering herbaceous plant with finely divided compound leaves and yellow, button-like flowers. It has a stout, somewhat reddish, erect stem, usually smooth, tall, and branching near the top. The leaf, leaves are alternate, long and are pinnately lobed, divided almost to the center into about seven pairs of segments, or lobes, which are again divided into smaller lobes having saw-toothed edges, giving the leaf a somewhat fern-like appearance. The roundish, flat-topped, button-like, yellow flower heads are produced in terminal clu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bract
In botany, a bract is a modified or specialized leaf, associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves in size, color, shape or texture. They also look different from the parts of the flower, such as the petals or sepals. A plant having bracts is referred to as bracteate or bracteolate, while one that lacks them is referred to as ebracteate or ebracteolate. Variants Some bracts are brightly coloured which aid in the attraction of pollinators, either together with the perianth or instead of it. Examples of this type of bract include those of '' Euphorbia pulcherrima'' (poinsettia) and '' Bougainvillea'': both of these have large colourful bracts surrounding much smaller, less colourful flowers. In grasses, each floret (flower) is enclosed in a pair of papery bracts, called the lemma (lower bract) and palea (upper bract), while each spikelet (group of florets) has a further pair o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanacetum Coccineum
''Tanacetum'' is a genus of about 160 species of flowering plants in the aster family, Asteraceae, native to many regions of the Northern Hemisphere.''Tanacetum''. Flora of North America. They are known commonly as tansies.''Tanacetum''. Integrated Taxonomic Information System (ITIS). The name tansy can refer specifically to '''', which may be called the common tansy or garden tansy for clarity. The generic name ''Tanacetum'' means 'immortality' in |
Tanacetum Cinerariifolium
''Tanacetum cinerariifolium'' is a species of flowering plant in the aster family, Asteraceae, and formerly part of the genus ''Pyrethrum'', but now placed in the genus ''Chrysanthemum'', or the genus ''Tanacetum'' by some biologists. It is called the Dalmatian chrysanthemum or Dalmatian pyrethrum, denoting its origin in that region of Europe (Dalmatia). It looks more like the common daisy than other pyrethrums do. Its flowers, typically white with yellow centers, grow from numerous fairly rigid stems. Plants have blue-green leaves and grow to 45 to 100 cm (18 to 39 in) in height. As an insecticide The plant is economically important as a natural source of an insecticide called "pyrethrum." The flowers are pulverized and the active components, called pyrethrins, contained in the seed cases, are extracted and sold in the form of an oleoresin. This is applied as a suspension in water or oil, or as a powder. Pyrethrins attack the nervous systems of all insects, and inhibit fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanacetum Camphoratum
''Tanacetum camphoratum'' is a species of flowering plant in the aster family known by the common names camphor tansy and dune tansy. Taxonomy It was formerly known as ''Tanacetum douglasii'', now a synonym, and is often included in '' T. bipinnatum''. Description It is a rhizomatous, perennial herb growing up to tall. It has a thick, low-lying stem up to long, branching to form a mass of vegetation. It is hairy, glandular, and aromatic, with a camphor scent. The leaves are up to 20 cm long and thick but featherlike, divided into many narrow leaflets on each side of the main rachis. Each leaflet in turn has many segments along each side, and the segments are usually divided into several small, knobby segments with folded or curled edges. Blooming from June to September, the inflorescence bears up to perhaps 20 flower heads, each about 1.5 cm wide. Each head contains many yellowish disc florets and many pistillate florets around the edges. The latter may have minu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanacetum Bipinnatum
''Tanacetum'' is a genus of about 160 species of flowering plants in the aster family, Asteraceae, native to many regions of the Northern Hemisphere.''Tanacetum''. Flora of North America. They are known commonly as tansies.''Tanacetum''. Integrated Taxonomic Information System (ITIS). The name tansy can refer specifically to '''', which may be called the common tansy or garden tansy for clarity. The generic name ''Tanacetum'' means 'immortality' in |
