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Englerophytum magalismontanum

Transvaal milkplum
Englerophytum magalismontanum IMG 3202.JPG
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Sapotaceae
Genus: Englerophytum
Species:
E. magalismontanum
Binomial name
Englerophytum magalismontanum
(Sond.) T.D.Penn.
Synonyms
  • Bequaertiodendron magalismontanum (Sond.) Heine & J.H.Hemsl.
  • Chrysophyllum magalismontanum Sond.
  • Pouteria magalismontana (Sond.) A.Meeuse

Englerophytum magalismontanum, commonly known as stamvrug, is an evergreen tree that mostly grows in rocky places. It has an extensive range, from northern KwaZulu-Natal northwards along the east coast and into the southern African interior, and northwards into tropical Africa.

Nomenclature

E. magalismontanum was at various times in the past known under the names Bequaertiodendron magalismontanum (see: J. C. Bequaert), Pouteria magalismontana and Chrysophyllum magalismontanum. The specific name refers to the Magaliesberg from where the species was first described, and where it commonly occurs.

Description

This tree is usually known by its Afrikaans name stamvrug ("stem fruit") which refers to its habit of bearing densely clustered fruit on the trunk and thicker branches (cauliflory), a common feature of this family. The fruit are tasty and sweet with very little pink flesh - they are rich in latex and are leathery-skinned. The seed is large, smooth and hard, and is covered with a soft membrane. Their bisexual flowers are similarly crowded on the trunk and branches, and smell strongly of fermenting honey.

Stamvrug trees at maturity may range from 1 metre tall on exposed dip slopes with very limited soil where they are prone to stunting by fire, to about 15 metres in the shelter of kloofs (gorges) with ample water and deep soil. Crowns are densely leafy and rounded, branched almost to the base, with leaves crowded at ends of branches, densely covered in golden-brown velvety hairs below, and often with a whitish indumentum above.

Relationships and associated species

The species is a larval food plant for the butterfly Pseudacraea boisduvali trimeni. It is closely related to Englerophytum natalense (Sond.) T.D.Penn. and Mimusops zeyheri Sond. and is often found in association with the latter.

It belongs to the family Sapotaceae with some 35 genera and 600 odd species, that are mostly trees with leathery, entire leaves. The family is present throughout the tropics and subtropics. They are rich in latex and yield substances like gutta-percha and balatá.

Gallery

Habit and habitat
Flower clusters
Ripe fruit
Leaf details: upper and undersides

External links

  • "Englerophytum magalismontanum". PlantzAfrika. Retrieved 2010-01-12.
  • Dressler, S.; Schmidt, M. & Zizka, G. (2014). "Englerophytum magalismontanum". African plants – a Photo Guide. Frankfurt/Main: Forschungsinstitut Senckenberg.

Media related to E. magalismontanum at Wikimedia Commons


This page was last updated at 2019-11-11 16:51, update this pageView original page

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