Biology:Asparagus striatus

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Short description: Species of shrub

Asparagus striatus
Asparagus sp Heidelberg - 1 - Copy.jpg
The hard, green foliage of Asparagus striatus
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Asparagaceae
Subfamily: Asparagoideae
Genus: Asparagus
Species:
A. striatus
Binomial name
Asparagus striatus
(L.f.) Thunb.

Asparagus striatus ("Bergappel") is a hard perennial shrublet of the Asparagus genus, that is indigenous to dry, rocky areas of South Africa .

Description

Galls on the stems of Asparagus striatus, from near Heidelberg, Western Cape.

A tough, perennial shrub reaching 60 cm in height. Unlike many of its relatives, it has no spines.

Its stems are hard and green. The leaves are held individually (not in groups or tufts). They are slender (c.35mm x 2-5mm), hard, green and the leaf-tips are sharp.

It often forms rounded gray-green galls on its stem, the result of parasitism by the fly Asparagobius braunsi.

The fragrant white flowers appear after rain, while the fruits are small berries (5mm wide) that become reddish orange when ripe.[1][2]

Distribution

This species is endemic to South Africa . Its distribution is from Bredasdorp and the Overberg in the south, as far as the Eastern Cape Province and Free State.

Its natural habitat is rocky shale, clay-rich soils, in succulent karoo or renosterveld vegetation.[3][4]

References

  1. "Photos of South African Plants - Category: Asparagus - Image: Asparagus striatus". https://www.operationwildflower.org.za/index.php/albums/genera/asparagus/asparagus-striatus-il-1-1798. 
  2. Obermeyer, A.A. & Immelman, K.L, (1992). Flora of southern Africa, Volume 5, Part 3: 59, 60. National Botanical Institute, Pretoria.
  3. "Threatened Species Programme | SANBI Red List of South African Plants". http://redlist.sanbi.org/species.php?species=728-99. 
  4. Obermeyer, A.A. & Immelman, K.L, (1992). Flora of southern Africa, Volume 5, Part 3: 59, 60. National Botanical Institute, Pretoria.

Further reading

Wikidata ☰ Q15523780 entry