الاثنين، 9 مايو 2016

Actaea (plant)

Actaea (plant)


Actaea, commonly called baneberry or bugbane, is a genus of flowering plants belonging to the family Ranunculaceae, native to subtropical, temperate and subartic regions of the Europe, Asia and North America, but the majority is endemic to parts of North America.
The genus is closely related to Cimicifuga and Souliea, and many botanists include those genera within Actaea (e.g., Compton et al. 1998, Compton & Culham 2002, Gao et al. 2006, RHS Plant Finder, 2007) based on combined evidence from DNA sequence data, similarity in biochemical constituents and on morphology; if included, the number of species in Actaea rises to 25-30. Other botanists (e.g., Hoffman 1999, Wang et al. 1999, Lee & Park 2004) reject this merger because only one group (Actaea) have fleshy fruit while the remainder have dry fruit. The genus is treated here in its broader sense.
Selected species
The name Actaea alba (L.) Mill. is a confused one (Fernald 1940); although described as an American species (now named A. pachypoda), the illustration on which the description was based was actually a picture of the European A. spicata, and strictly, the name is therefore a synonym of the European species. Some texts, however, still treat A. pachypoda under this name.
Actaea is recorded as a food plant for the larva of the Dot Moth.

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Adiantum



Adiantum



Adiantum /ˌædiˈæntəm/,[1] the maidenhair fern, is a genus of about 200 species of ferns in the Vittarioideae subfamily of the family Pteridaceae,[2] though some researchers place it in its own family, Adiantaceae. The genus name comes from Greek, meaning "not wetting", referring to the fronds' ability to shed water without becoming wet.
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Gladiolus murielae

Gladiolus murielae


Gladiolus murielae, le glaïeul d'Abyssinie, est une plante bulbeuse de la famille des Iridaceae.
Le bulbe de ce glaïeul est en fait un corme, organe de réserve qui se développe au-dessus du corme de l'année précédente.
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Aconitum

Aconitum


Aconitum (/ˌækəˈnaɪtəm/),[2] also known as aconite, monkshood, wolf's bane, leopard's bane, mousebane, women's bane, devil's helmet, Queen of all Poisons, or blue rocket, is a genus of over 250 species of flowering plants belonging to the family Ranunculaceae. These herbaceous perennial plants are chiefly native to the mountainous parts of the northern hemisphere,[3] growing in the moisture-retentive but well-draining soils of mountain meadows. Most species are extremely poisonous[4] and must be dealt with carefully.
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Achillea

Achillea



Achillea /ækᵻˈliːə/[3] is a group of flowering plants in the family Asteraceae described as a genus by Linnaeus in 1753.[4][5]
The genus was named after the Greek mythological character Achilles. According to legend, Achilles' soldiers used yarrow to treat their wounds,[6] hence some of its common names such as allheal and bloodwort.
The genus is native primarily to Europe, temperate areas of Asia, and North America.[7][8] The common name "yarrow" is usually applied to Achillea millefolium,[9] but may also be used for other species within the genus.
These plants typically have frilly, hairy, aromatic leaves. The plants show large, flat clusters of small flowers at the top of the stem. The flowers can be white, yellow, orange, pink or red and are generally visited by many insects, and are thus characterised by a generalised pollination system.[10]


Achillea species are used as food plants by the larvae of some Lepidoptera species - see list of Lepidoptera that feed on Achillea.

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Acanthus (plant)

Acanthus (plant)


Acanthus is a genus of about 30 species of flowering plants in the family Acanthaceae, native to tropical and warm temperate regions, with the highest species diversity in the Mediterranean Basin and Asia. Common names include Acanthus and Bear's breeches. The generic name derives from the Greek term for the Acanthus mollis, ἄκανθος, akanthos, a plant that was commonly imitated in Corinthian capitals.[2][3]
The genus comprises herbaceous perennial plants, rarely subshrubs, with spiny leaves and flower spikes bearing white or purplish flowers. Size varies from 0.4 to 2 m (1.3 to 6.6 ft) in height.

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Acaena

Acaena



Acaena is a genus of about 100 species of mainly evergreen, creeping herbaceous perennial plants and subshrubs in the family Rosaceae, native mainly to the Southern Hemisphere, notably New Zealand, Australia and South America, but with a few species extending into the Northern Hemisphere, north to Hawaii (A. exigua) and California (A. pinnatifida).[1]
The leaves are alternate, 4–15 centimetres (1.6–5.9 in) long, and pinnate or nearly so, with 7–21 leaflets. The flowers are produced in a tight globose [inflorescence] 1–2 centimetres (0.39–0.79 in) in diameter, with no petals. The fruit is also a dense ball of many seeds; in many (but not all) species the seeds bear a barbed arrowhead point, the seedhead forming a burr which attaches itself to animal fur or feathers for dispersal.
Several Acaena species in New Zealand are known by the common name bidibid. The word is written variously bidi-bidi, biddy-biddy, biddi-biddi, biddi-bid and a number of other variations. These names are the English rendition of the original Māori name of piripiri.[2] The plant is also called the New Zealand burr. The species Acaena microphylla has gained the Royal Horticultural Society's Award of Garden Merit.[3]
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