Euphorbia rhombifolia

Euphorbia rhombifolia
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Malpighiales
Family:	Euphorbiaceae
Genus:	Euphorbia
Species:	E. rhombifolia
Binomial name
	Euphorbia rhombifolia; Boiss.
Synonyms[1]
	List Arthrothamnus brachiatus E.Mey. ex Klotzsch & Garcke ; Arthrothamnus densiflorus Klotzsch & Garcke ; Euphorbia amarifontana N.E.Br. ; Euphorbia bayeri L.C.Leach ; Euphorbia caterviflora N.E.Br. ; Euphorbia chersina N.E.Br. ; Euphorbia hastisquama N.E.Br. ; Euphorbia mundii N.E.Br. ; Euphorbia perpera N.E.Br. ; Euphorbia rudolfii N.E.Br. ; Tirucalia amarifontana (N.E.Br.) P.V.Heath ; Tirucalia brachiata (E.Mey. ex Klotzsch & Garcke) P.V.Heath ; Tirucalia caterviflora (N.E.Br.) P.V.Heath ; Tirucalia chersina (N.E.Br.) P.V.Heath ; Tirucalia densiflora (Klotzsch & Garcke) P.V.Heath ; Tirucalia perpera (N.E.Br.) P.V.Heath ; Tirucalia rhombifolia (Boiss.) P.V.Heath ; Tirucalia rudolfii (N.E.Br.) P.V.Heath;

Euphorbia rhombifolia is a species of flowering plant in the Euphorbiaceae family.[1] It is native to Namibia and South Africa, where it is widespread in clay-rich soils, extending as far east as Kwazulu-Natal.[2]

Description

Euphorbia rhombifolia in cultivation

It grows to 60 or 70 cm in height, with a tuberous root-system that is often eaten by porcupines, and with thin (3-5mm), erect, grey, branching stems. The branches are dichotomous and taper to soft points.

The plants in the south-western Cape (E. caterviflora) are smaller, reaching only 30 cm in height.

The leaves are small (1-3mm), dark, triangular and deciduous. The flowerheads are also small (3mm) and appear from winter into spring. [3]

Related species

This species is part of a group of closely related "stick euphorbias" including Euphorbia burmannii and Euphorbia tenax, which are widespread across southern Africa.[4]

References

"Euphorbia rhombifolia Boiss". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved September 4, 2020.
http://redlist.sanbi.org/species.php?species=574-311
Vlok, J. and Schutte-Vlok, A.L. (2010) Plants of the Klein Karoo. Umdaus Press, Hatfield.
Bruyns, P.V. (2012). Nomenclature and typification of southern African species of Euphorbia. Bothalia 42(2): 217-245.

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[KewPOWO-1] "Euphorbia rhombifolia Boiss". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved September 4, 2020.

[2] ttp://redlist.sanbi.org/species.php?species=574-311

[3] Vlok, J. and Schutte-Vlok, A.L. (2010) Plants of the Klein Karoo. Umdaus Press, Hatfield.

[4] Bruyns, P.V. (2012). Nomenclature and typification of southern African species of Euphorbia. Bothalia 42(2): 217-245.