For the identification of insects and other fauna and flora of South Africa: please click on the following links:
Insects and related species: Antlions - Ants - Bees - Beetles - Bugs - Butterflies, Moths and Caterpillars - Centipedes and Millipedes - Cockroaches - Crickets - Dragonflies and Damselflies - Grasshoppers and Katydids - Mantis - Stick Insects - Ticks and Mites - Wasps - Woodlice
Plants, Trees, Flowers: (Note: Unless plants fall into a specific species such as Cacti, they have been classified by their flower colour to make them easier to find) Bonsai - Cacti, Succulents, Aloes, Euplorbia - Ferns and Cycads - Flowers - Fungi, Lichen and Moss - Grass - Trees
Animals, Birds, Reptiles etc.: Animals, Birds, Fish and Crabs - Frogs - Lizards - Scorpions - Snails and Slugs - Snakes - Spiders - Tortoise, Turtles and Terrapins - Whipscorpions
Other photography: Aeroplanes - Cars and Bikes - Travel - Sunrise - Water drops/falls - Sudwala and Sterkfontein Caves etc.

Sunday, October 27, 2013

Desert Broom (Cadaba aphylla)

Family Capparaceae
Description
The plant is an evergreen and leafless, many-branched, perennial shrub with a straggly growth habit and protruding stems that may reach up to 2 m. The flowers are normally borne in summer and may vary from a deep red to yellow colour with stamens that characteristically protrude from the petals. Fruits are up to 90 mm long, green and turn a rusty brown when ripe, and resemble peas that curl inward with glistening, sticky hairs on the skin. The small black seeds are covered with a bright orange and sticky pulp that dries as the seeds fall to the ground in late summer. Cadaba aphylla is a relatively slow-growing plant and is not considered as rare or endangered.



Distribution
Plants are not restricted to a certain geographic area. They occur in a wide variety of habitats from arid summer rainfall areas, the Karoo, southern and eastern Cape in seasonal streams, flats, mountain slopes and dry ravines. They can withstand long periods of drought and are also frost resistant. C. aphylla flowers profusely when planted in full sun in fairly dry conditions.

Ecology
Ants as well as sugarbirds relish the nectar that is produced by the flowers. The stamens are carried in an exposed manner raised from the bright red petals, which serves as advertisement to pollinators. Pea-shaped fruits split in two, exposing the seeds, which are small and surrounded by a sticky pulp. It is possible that this may help the dispersal of seeds as the pulp sticks to mammals and birds. Leaves are reduced to spiky stems, which fulfil the role of photosynthesis and so limit transpiration, allowing the plant to survive intense heat and periodic droughts. Cadaba aphylla is not palatable to livestock.




Uses and cultural aspects
Some authorities claim that this plant is poisonous but there is no real proof of this. It is however known to possess medicinal properties. The moist, powdered plant is applied as a poultice between gauze to draw boils and abscesses. The root is used in small doses as a tonic and also as a purgative but an overdose might be toxic. A local superstition states that burning wood from this plant will make the wind blow. Plants are occasionally grown in gardens, but not as often as it warrants.. It shows particular potential as a plant for dry, arid gardens and will also survive in areas with frost.