The reduced surface area of a phyllode is an adaptation for conserving water.
Vachellia drepanolobium (formerly Acacia drepanolobium). A Vachellia drepanolobium a hüvelyesek (Fabales) rendjébe , ezen belül a pillangósvirágúak (Fabaceae) családjába és a mimózaformák (Mimosoideae) alcsaládjába tartozó faj . Flowers are very small and clustered into white spherical balls. While thorns may discourage some predators, they're no match for the talented tongue of a giraffe. Like the Central American acacias, the ants … Whistling thorns are fire-adapted species in their range throughout East Africa. Vachellia drepanolobium, or whistling thorn, is an acacia tree native to eastern Africa that grows to 6m (18 ft.) in height. Whistling Thorn Ant Shrubs two to six meters tall, often with many contorted branches and after rains clothed in dark green feathery leaves. It has bulbous thorns (paired stipular spines) occupied by stinging ants of the genus Crematogaster. Even acacias with phyllodes, though, start out with lacy, compound leaves when they are young.
In many acacias, long, sharp thorns hide among the leaves. Vachellia drepanolobium is a slender shrub or a tree, with short branches radiating from main stem, or sometimes with an open spreading top, usually growing 1 - 5 metres tall, occasionally reaching 8 metres[328.
Dec. 2014. A Wikifajok tartalmaz Vachellia drepanolobium témájú rendszertani információt. Plant Adaptations In trees, most savanna adaptations are to drought--long tap roots to reach the deep water table, thick bark for resistance to annual fires (thus palms are prominent in many areas), deciduousness to avoid moisture loss during the dry season, and use of the trunk as a water-storage organ (as in baobab). A Wikimédia Commons tartalmaz Vachellia drepanolobium témájú kategóriát. Title African Flowering Plants Database Publication Author Website
The genetic structure of the V. drepanolobium system is particularly interesting because of how demographically heterogeneous the symbiosis is across its range: if gene flow were limited through this region, we might expect populations at each location to be adapted to the unique local conditions; while if gene flow were widespread, we would predict adaptations that allow plasticity in the face of a variety of possible conditions. Acacia drepanolobium (Vachellia drepanolobium) West of Insinya, Kajiado, Kenya. This is the famous "whistling thorn" of Kenya.
The whistling from the bulbous bases of its thorns is a result of holes made by ants, but there is more to the story than that.
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