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Акантовые (Acanthaceae) 5/3/11—12/28/19

Acanthaceae is a family (the acanthus family) of dicotyledonous flowering plants containing almost 250 genera and about 2500 species. Most are tropical herbs, shrubs, or twining vines; some are epiphytes. Only a few species are distributed in temperate regions. The four main centres of distribution are Indonesia and Malaysia, Africa, Brazil, and Central America. The representatives of the family can be found in nearly every habitat, including dense or open forests, scrublands, wet fields and valleys, sea coast and marine areas, swamps, and mangrove forests.

Plants in this family have simple, opposite, decussated leaves with entire (or sometimes toothed, lobed, or spiny) margins, and without stipules. The leaves may contain cystoliths, calcium carbonate concretions, seen as streaks on the surface.

The flowers are perfect, zygomorphic to nearly actinomorphic, and arranged in an inflorescence that is either a spike, raceme, or cyme. Typically, a colorful bract subtends each flower; in some species, the bract is large and showy. The calyx usually has four or five lobes; the corolla tubular, two-lipped or five-lobed; stamens number either two or four, arranged in pairs and inserted on the corolla, and the ovary is superior and bicarpellated, with axile placentation.

The fruit is a two-celled capsule, dehiscing somewhat explosively. In most species, the seeds are attached to a small, hooked stalk (a modified funiculus called a jaculator or a retinaculum) that ejects them from the capsule.

A species well-known to temperate gardeners is bear's breeches (Acanthus mollis ), a herbaceous perennial plant with big leaves and flower spikes up to 2 m tall. Tropical genera familiar to gardeners include Thunbergia and Justicia.

Avicennia, a genus of mangrove trees, usually placed in Verbenaceae or in its own family, Avicenniaceae, is included in Acanthaceae by the Angiosperm Phylogeny Group on the basis of molecular phylogenetic studies that show it to be associated with this family.
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Азистазия гангская (Asystasia gangetica)

Азистазия гангская (Asystasia gangetica)

11 images

Кроссандра воронковидная (Crossandra infundibuliformis)

Кроссандра воронковидная (Crossandra infundibuliformis)

5 images

Кроссандра нильская (Crossandra nilotica)

Кроссандра нильская (Crossandra nilotica)

4 images

Пахистахис желтый (Pachystachys lutea)

Пахистахис желтый (Pachystachys lutea)

4 images

Псевдэрантемум выемчатый (Pseuderanthemum sinuatum)

Псевдэрантемум выемчатый (Pseuderanthemum sinuatum)

4 images

Псевдэрантемум изящноцветковый (Pseuderanthemum graciflorum)

Псевдэрантемум изящноцветковый (Pseuderanthemum graciflorum)

4 images

Псевдэрантемум рыхлоцветковый (Pseuderanthemum laxiflorum)

Псевдэрантемум рыхлоцветковый (Pseuderanthemum laxiflorum)

2 images

Рунгия Клосса (Rungia klossii)

Рунгия Клосса (Rungia klossii)

4 images

Руэллия Бриттона (Ruellia brittoniana)

Руэллия Бриттона (Ruellia brittoniana)

5 images

Руэллия Девоса (Ruellia devosiana)

Руэллия Девоса (Ruellia devosiana)

4 images

Руэллия коротколистная (Ruellia brevifolia)

Руэллия коротколистная (Ruellia brevifolia)

15 images

Руэллия простая (Ruellia simplex)

Руэллия простая (Ruellia simplex)

4 images

Руэллия простая розовая форма (Ruellia simplex f. rosea)

Руэллия простая розовая форма (Ruellia simplex f. rosea)

2 images

Тунбергия крупноцветковая (Thunbergia grandiflora)

Тунбергия крупноцветковая (Thunbergia grandiflora)

2 images

Тунбергия крылатая (Thunbergia alata)

Тунбергия крылатая (Thunbergia alata)

6 images

Тунбергия майсурская (Thunbergia mysorensis)

Тунбергия майсурская (Thunbergia mysorensis)

17 images

Тунбергия прямая (Thunbergia erecta)

Тунбергия прямая (Thunbergia erecta)

3 images

Тунбергия родственная (Thunbergia affinis)

Тунбергия родственная (Thunbergia affinis)

11 images

Фиттония гигантская (Fittonia gigantea)

Фиттония гигантская (Fittonia gigantea)

5 images

Юстиция Брандеги (Justicia brandegeeana)

Юстиция Брандеги (Justicia brandegeeana)

12 images

Юстиция телесная (Justicia carnea)

Юстиция телесная (Justicia carnea)

8 images

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