Index to Flowers in the Order Zygophyllales
Family: Zygophyllaceae
Tribulus cristatus Winged Devil-thorn viewtopic.php?p=488076#p488076
Tribulus zeyheri zeyheri Devil-thorn Weed viewtopic.php?p=204660#p204660
Zygophyllum morgsana Tortoise Bush, Slymbos viewtopic.php?p=240407#p240407
Africa Wild Flower Book - Order Zygophyllales
Moderator: Klipspringer
Re: Africa Wild Flower Book - Order Zygophyllales
Devil-thorn Weed Tribulus zeyheri zeyheri (Dubbeltjie)
Order: Zygophyllales. Family: Zygophyllaceae
Kgalagadi Transfrontier Park, TR area © GavinW
© GavinW
Kgalagadi Transfrontier Park, Dalkeith area
Description
Prostrate annual herb with many, branched, trailing shoots. After rains Tribulus zeyheri can turn huge areas into yellow carpets. All parts covered in long bristle-like white hairs. Leaves pinnately compound, opposite, without a terminal leaflet, one leaf in a pair often longer than the other. Flowers December to April, after rain. Flowers solitary in leaf axils. Peduncle 1.5-2 times as long as, the subtending leaf. Petals bright yellow or white with a yellow centre, 10-20(-25) mm. Fruit a hard triangular drupe with sharp spines. These spiny fruits fragment into 4 segments, and may cause stock poisoning.
Distribution
Arid regions of Angola, Botswana, Namibia, Zimbabwe and South Africa (Free State, Limpopo, Northern Cape).
Habitat
In dry open ground and over-grazed grassland.
Order: Zygophyllales. Family: Zygophyllaceae
Kgalagadi Transfrontier Park, TR area © GavinW
© GavinWKgalagadi Transfrontier Park, Dalkeith area
Description
Prostrate annual herb with many, branched, trailing shoots. After rains Tribulus zeyheri can turn huge areas into yellow carpets. All parts covered in long bristle-like white hairs. Leaves pinnately compound, opposite, without a terminal leaflet, one leaf in a pair often longer than the other. Flowers December to April, after rain. Flowers solitary in leaf axils. Peduncle 1.5-2 times as long as, the subtending leaf. Petals bright yellow or white with a yellow centre, 10-20(-25) mm. Fruit a hard triangular drupe with sharp spines. These spiny fruits fragment into 4 segments, and may cause stock poisoning.
Distribution
Arid regions of Angola, Botswana, Namibia, Zimbabwe and South Africa (Free State, Limpopo, Northern Cape).
Habitat
In dry open ground and over-grazed grassland.
Re: Africa Wild Flower Book - Order Zygophyllales
Tortoise Bush, Slymbos Zygophyllum morgsana, formerly Roepera morgansa (Leeubos, Leeubossie, Skilpadbos)
Order: Zygophyllales. Family: Zygophyllaceae
© Tina
Zygophyllum morgsana in fruit in the West Coast National Park
Species of Zygophyllum are perennials, rarely herbaceous annuals. They are ± round, many-stemmed dwarf shrubs, rarely shrubs, ± 1 m x ± 1.5 m. Sometimes the stems will scramble into and over nearby plants or the branches are densely tangled. The leaves are fleshy, bifoliolate (having two leaflets) or simple and in opposite pairs. Petioles are present, often quite short, or absent. The leaflets are variable in size and shape. Membranous, herbaceous or spiny stipules are also a prominent feature of the genus. The plants are known as xerophytic leaf succulents as they occur in dry conditions and have fleshy leaves. The leaves are usually drought deciduous, dropping off under unfavourable conditions.
The flowers are borne singly in the axils of the leaves. The calyx and corolla are usually 5-merous. The sepals are somewhat fleshy, slightly connate at the base. Petals are shades of yellow, white or light orange. In most species the petals have red markings towards the base or are streaked with red veins. The petals are free, sessile and clawed, broadly obovate, elliptic or spathulate (spoon-shaped). An 8- or 10-angled fleshy disc is present, with the corresponding number of stamens inserted at the base. Stamens are always twice as many as the petals; their filaments are free but have appendages at their bases. Zygophyllum is further characterized by a simple style with a minute stigma, longer or shorter than the ovary, which is sessile on the disc. The stigma is minute.
The fruit is a capsule or a schizocarp (fruit splits into two or more parts). Different capsule types occur. When dry, the capsules are often ridged or ± smooth as in Z. flexuosum, or winged as in Z. morgsana. A few to several seeds occur in each locule (chamber) of the ovary.
Description
Shrub or shrublet to 1 .5 m with petiolate leaves divided into two asymmetrical, oval leaflets; stalk 12-25 mm long.
It bears pale yellow flowers with reddish markings, with only four petals, marked with red. Flowers in pairs at the end of branches.
Large fruits pendulous with 4 prominent membranous wings, each 15 mm wide.
Distribution
From southern Namibia to the Eastern Cape.
Habitat
Korroid vegetation, fynbos, strandveld. Sandy and stony slopes and flats, mostly on the coast.
Links: Braam Van Wyk: A Photographic Guide to Wild Flowers of South Africa
Order: Zygophyllales. Family: Zygophyllaceae
© TinaZygophyllum morgsana in fruit in the West Coast National Park
Species of Zygophyllum are perennials, rarely herbaceous annuals. They are ± round, many-stemmed dwarf shrubs, rarely shrubs, ± 1 m x ± 1.5 m. Sometimes the stems will scramble into and over nearby plants or the branches are densely tangled. The leaves are fleshy, bifoliolate (having two leaflets) or simple and in opposite pairs. Petioles are present, often quite short, or absent. The leaflets are variable in size and shape. Membranous, herbaceous or spiny stipules are also a prominent feature of the genus. The plants are known as xerophytic leaf succulents as they occur in dry conditions and have fleshy leaves. The leaves are usually drought deciduous, dropping off under unfavourable conditions.
The flowers are borne singly in the axils of the leaves. The calyx and corolla are usually 5-merous. The sepals are somewhat fleshy, slightly connate at the base. Petals are shades of yellow, white or light orange. In most species the petals have red markings towards the base or are streaked with red veins. The petals are free, sessile and clawed, broadly obovate, elliptic or spathulate (spoon-shaped). An 8- or 10-angled fleshy disc is present, with the corresponding number of stamens inserted at the base. Stamens are always twice as many as the petals; their filaments are free but have appendages at their bases. Zygophyllum is further characterized by a simple style with a minute stigma, longer or shorter than the ovary, which is sessile on the disc. The stigma is minute.
The fruit is a capsule or a schizocarp (fruit splits into two or more parts). Different capsule types occur. When dry, the capsules are often ridged or ± smooth as in Z. flexuosum, or winged as in Z. morgsana. A few to several seeds occur in each locule (chamber) of the ovary.
Description
Shrub or shrublet to 1 .5 m with petiolate leaves divided into two asymmetrical, oval leaflets; stalk 12-25 mm long.
It bears pale yellow flowers with reddish markings, with only four petals, marked with red. Flowers in pairs at the end of branches.
Large fruits pendulous with 4 prominent membranous wings, each 15 mm wide.
Distribution
From southern Namibia to the Eastern Cape.
Habitat
Korroid vegetation, fynbos, strandveld. Sandy and stony slopes and flats, mostly on the coast.
Links: Braam Van Wyk: A Photographic Guide to Wild Flowers of South Africa
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Re: Africa Wild Flower Book - Order Zygophyllales
Winged Devil-thorn Tribulus cristatus (Dubbeltjie)
Order: Zygophyllales. Family: Zygophyllaceae
© Lisbeth
Augrabies Falls National Park, South Africa
Description
Prostrate annual herb with radiating stems to 1m. Compund leaves, opposite and unequal in size. Pale yellow flowers with petals to 25 mm long. Fruit segments each with 4 broad, crested wings.
Distribution
Arid regions of Namibia and South Africa (Northern Cape).
Habitat
Sandy flats and roadsides.
Order: Zygophyllales. Family: Zygophyllaceae
© LisbethAugrabies Falls National Park, South Africa
Description
Prostrate annual herb with radiating stems to 1m. Compund leaves, opposite and unequal in size. Pale yellow flowers with petals to 25 mm long. Fruit segments each with 4 broad, crested wings.
Distribution
Arid regions of Namibia and South Africa (Northern Cape).
Habitat
Sandy flats and roadsides.