Dysphania melanocarpa

Dysphania melanocarpa, commonly known as black crumbweed, is an annual herb that grows in arid and semi-arid regions of Australia.

Dysphania melanocarpa
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Amaranthaceae
Genus: Dysphania
Species:
D. melanocarpa
Binomial name
Dysphania melanocarpa
(J.M.Black) Mosyakin & Clemants
Synonyms

Chenopodium melanocarpum
Chenopodium carinatum var. melanocarpum

Description

It grows as a prostrate aromatic annual, with hairy stems that branch from its base. Leaves are oval in shape, about fifteen millimetres long. Flowers occur in dense clusters located in the axils.[1]

Taxonomy

It was first published in 1922 by John McConnell Black, as a variety of C. carinatum,[2] and promoted to species rank by him in 1934. Two forms have been published, although these are only recognised in South Australia and Western Australia; they are C. melanocarpum f. melanocarpum and C. melanocarpum f. leucocarpum.[3] In 2008, Sergei L. Mosyakin & Steven E. Clemants grouped this taxon in genus Dysphania.[4]

Distribution and habitat

It occurs in arid and semi-arid areas of Australia, usually in well-drained soils.[1]

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References
  1. Wilson, Paul G. (1984). "Chenopodiaceae". Flora of Australia, Volume 4: Phytolaccaceae to Chenopodiaceae. Canberra: Australian Government Publishing Service.
  2. "Chenopodium carinatum var. melanocarpum J.M.Black". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  3. "Chenopodium melanocarpum (J.M.Black) J.M.Black". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  4. Sergei L. Mosyakin; Steven E. Clemants (2008). "Further Transfers of glandular-pubescent species from Chenopodium subg. Ambrosia to Dysphania (Chenopodiaceae)". Journal of the Botanical Research Institute of Texas. 1. 2. Botanical Research Institute of Texas. pp. 425–31. Retrieved 8 September 2016. Dysphania pusilla (Hook, f.) Mosyakin & Clemants, comb. nov. Basionym: Chenopodium pusillum Hook, f., Handh New Zealand Fl. 1:231. 1864.
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