Duvalia vestita

Last updated

Duvalia vestita
Duvalia caespitosa vestita - Malgas-Infanta - Copy.jpg
The flower of Duvalia vestita, Malgas.
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Apocynaceae
Genus: Duvalia
Species:
D. vestita
Binomial name
Duvalia vestita
Meve

Duvalia vestita is a small succulent plant species, in the family Apocynaceae, indigenous to the southernmost part of the Western Cape Province, South Africa. [1]

Contents

Description

Duvalia vestita is sometimes considered to be a subspecies of D.caespitosa.

The flowers are 20-30mm in diameter, and are brownish-red to almost black. The central annulus is covered in short, dark hairs. The lobes are also hairy, at least near their bases where they are also slightly more spread out than typical Duvalia caespitosa . The margins of the lobes are not ciliate.

The stems are variable, but are sometimes slender and rhizomatous, like those of Duvalia immaculata . Individual stems are 5-22mm wide and 10-80mm long. The tiny (maximum 1mm) leaf-rudiments barely have stipular glands. When not in flower, D.vestita can resemble Orbea variegata , a species it often grows among.

Like D.caespitosa, D.vestita is a tetraploid. In appearance, it is somewhat intermediate between Duvalia caespitosa and Duvalia elegans , and might have originated as the product of hybridisation between these two species. [2]

Distribution

Intermediate form, between D.vestita and Duvalia caespitosa, from near Ashton Duvalia caespitosa vestita - Ashton - Copy.jpg
Intermediate form, between D.vestita and Duvalia caespitosa , from near Ashton

The distribution of D.vestita is in the far south of the Duvalia caespitosa range - mainly in the western Overberg region, south of the Langeberg mountains.

In the north west, D.vestita is rarely and doubtfully recorded from the Robertson Karoo (e.g. Ashton) and Breede River Valley. Here, it co-occurs with typical Duvalia caespitosa and with Duvalia elegans , and tends to merge with the typical Duvalia caespitosa .

The main part of the D.vestita distribution range is in the western Overberg (Stormsvlei, Greyton, Bredasdorp, Heuningsrug, Struisbaai, Malgas), where it co-occurs with Duvalia elegans . (The typical hairless-flowered Duvalia caespitosa does not occur in the Overberg) Towards the eastern Overberg (Heidelberg, Riversdale), it becomes indistinguishable from Duvalia elegans .

Its habitat is usually more rocky areas, with thin, low Fynbos vegetation. It often grows with Orbea variegata , on low shale or limestone slopes or rocky plains. [3]

Related Research Articles

<i>Stapelia</i> Genus of plants

Stapelia is a genus of low-growing, spineless, stem succulent plants, predominantly from South Africa with a few from other parts of Africa. Several Asian and Latin American species were formerly included but they have all now been transferred to other genera. The flowers of certain species, most notably Stapelia gigantea, can reach 41 cm (16 inches) in diameter when fully open. Most Stapelia flowers are visibly hairy and generate the odor of rotten flesh when they bloom.

<i>Aloe arborescens</i> Species of succulent

Aloe arborescens, the krantz aloe or candelabra aloe, is a species of flowering succulent perennial plant that belongs to the genus Aloe, which it shares with the well known and studied Aloe vera. The specific epithet arborescens means "tree-like". Aloe arborescens is valued by gardeners for its succulent green leaves, large vibrantly-colored flowers, winter blooming, and attraction for birds, bees, and butterflies.

<i>Duvalia</i> Genus of plants

Duvalia is a succulent plant genus in the subfamily Asclepiadoideae, in the family Apocynaceae (dogbane).

<i>Dudleya farinosa</i> Species of succulent

Dudleya farinosa is a species of succulent plant in the family Crassulaceae known by several common names, including bluff lettuce, powdery liveforever, and powdery dudleya. A coastal plant of northern California and southern Oregon, it is typically found on oceanic bluffs just directly above the reach of the waves. Its appearance is characterized by lotus-like rosettes of beveled leaves, and in summer the plant erects a tall pink to red stem densely covered in foliage, topped with branches adorned with pale yellow flowers. The green or white rosettes of this plant can be seen covering stretches of rocky coast and nearby islets.

<i>Curio archeri</i> Species of flowering plant

Curio archeri, syn. Senecio toxotis is a species of succulent plant in the family Asteraceaethat is indigenous to the south-western Cape, South Africa.

<i>Kumara plicatilis</i> Species of tree

Kumara plicatilis, formerly Aloe plicatilis, the fan-aloe, is a succulent plant endemic to a few mountains in the Fynbos ecoregion, of the Western Cape in South Africa. The plant has an unusual and striking fan-like arrangement of its leaves. It may grow as a large multistemmed shrub or as a small tree. It is one of the two species in the genus Kumara.

<i>Stapeliopsis</i> Genus of plants

Stapeliopsis is a genus of succulent plants in the family Apocynaceae, native to southern Africa.

<i>Piaranthus</i> Genus of flowering plants

Piaranthus is a succulent plant genus in the subfamily Asclepiadoideae, in the family Apocynaceae.

<i>Orbea variegata</i> Species of flowering plant

Orbea variegata is a species of flowering plant in the family Apocynaceae, known as the star flower. It is native to the coastal belt of the Western Cape, South Africa, growing actively during the winter rainfall season. It is an invasive species in southern Australia.

<i>Anacampseros retusa</i> Species of plant

Anacampseros retusa is a species of succulent plant native to the Northern Cape and Western Cape Provinces of South Africa, as well as to Namibia.

<i>Crassula subaphylla</i> Species of plant

Crassula subaphylla is a succulent plant belonging to the family Crassulaceae. It is widespread in the Karoo regions of South Africa and Namibia.

<i>Crassula biplanata</i> Species of plant

Crassula biplanata is a succulent plant native to rocky ledges and mountainous areas in the southern parts of South Africa.

<i>Trichodiadema occidentale</i> Species of succulent

Trichodiadema occidentale is succulent plant of the genus Trichodiadema, native to the Western Cape Province, South Africa, where it grows in rocky shale or limestone hills in the Overberg region, and especially in disturbed areas.

<i>Duvalia elegans</i> Species of plant

Duvalia elegans is a small succulent plant species, in the family Apocynaceae. It is the type species of the genus Duvalia, and it is endemic to the Western Cape Province, South Africa.

<i>Duvalia caespitosa</i> Species of plant

Duvalia caespitosa is a small succulent plant species, in the family Apocynaceae, widespread in South Africa.

<i>Euphorbia tuberosa</i> Species of flowering plant

Euphorbia tuberosa, commonly known as '"milkball/melkbol"' or '"wilderamenas"', is a variable geophytic plant of the family Euphorbiaceae, indigenous to the western parts of South Africa.

<i>Drosanthemum lavisii</i> Species of succulent

Drosanthemum lavisii is a succulent plant in the ice plant family, Aizoaceae, indigenous to the Overberg region of the Western Cape Province, South Africa.

Drosanthemum quadratum is a succulent plant in the ice plant family, Aizoaceae, indigenous to the Overberg region of the Western Cape Province, South Africa.

<i>Selago ramosissima</i> Species of flowering plant

Selago ramosissima is a species of plant in the family Scrophulariaceae. It is endemic to the Western Cape, South Africa.

Selago thomii is a species of plant in the family Scrophulariaceae. It is endemic to the Western Cape, South Africa.

References

  1. SANBI Redlist
  2. Meve, U. (2012). The Genus Duvalia (Stapelieae): Stem-Succulents between the Cape and Arabia. Plant Systematics and Evolution 10 - Supplementa. Springer Science & Business Media. pp.102-103.
  3. P.V.Bruyns (2005). Stapeliads of southern Africa and Madagascar. Vol.1. Umdaus Press, Pretoria.