Protea glabra

Protea glabra, also called the Clanwilliam sugarbush,[1][3][4] is a flowering shrub belonging to the genus Protea.[4]

Protea glabra
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Protea
Species:
P. glabra
Binomial name
Protea glabra
Synonyms[1]
  • Leucadendron glabra R.Br.

Other vernacular names for this plant are chestnut sugarbush, Clanwilliam protea or kayang bush. In Afrikaans it is known as the kaiingbos, kaiing-suikerbos, kaiinghout, kayangbos, kreupelwaboom or tolletjiewaboom.[1]

The tree's national number is 89.1.[5]

Description

The bush grows up to 5m high and has a conical shape. It blooms from July to November. The plant is monoecious with both sexes in each flower.[4]

Inflorescence with open flowers at Farm Oorlogskloof, Nieuwoudtville, Northern Cape, South Africa

Ecology

Pollination occurs through the action of birds[1][4] and beetles.[4] The seed is not stored in the woody fruit and is spread by the wind as soon as it is ripe.[1][4] The plant grows in shallow sandstone soils or cracks in rock at altitudes of 500 - 1,500m.[4] It is long-lived and can re-sprout after burning from a bole-shaped rootstock, although it normally grows in areas where there is low risk of wildfires.[1][4]

Distribution

This species is endemic to South Africa.[1] The plant is found in the Western Cape, on the Bokkeveld escarpment up to the Olifants River and the Koue Bokkeveld Mountains.[4] Here, it is a widespread and common species with no severe threats.[1]

References
  1. Rebelo, A.G.; Mtshali, H.; von Staden, L. (15 April 2019). "Clanwilliam Sugarbush". Red List of South African Plants. version 2020.1. South African National Biodiversity Institute. Retrieved 11 July 2020.
  2. Kuntze, Otto (1891). Revisio Generum Plantarum: vascularium omnium atque cellularium multarum secundum leges nomeclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum (in German). 2. Leipzig: A. Felix. p. 590. doi:10.5962/bhl.title.327.
  3. "Protea glabra (Clanwilliam sugarbush)". Biodiversity Explorer. Iziko - Museums of South Africa. Retrieved 7 July 2020.
  4. "Shaving-bush Sugarbushes - Proteas". Protea Atlas Project Website. 11 March 1998. Retrieved 7 July 2020.
  5. https://www.treetags.co.za/national-list-of-indigenous-trees/


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