Plants of South Eastern New South Wales
Euphorbia dallachyana
Common name
Caustic weed
Family
Euphorbiaceae
Where found
Woodland, grassy areas, disturbed sites, and stream banks. Usually grows in moister sites than Euphorbia drummondii. Mostly Sydney area and the mountains to the west. ACT. Occasionally elsewhere.
Notes
Perennial herb, prostrate or to 0.2 m tall. Stems hairless. Leaves opposite each other, 0.2-1 cm long, 1.5-5 mm wide, surfaces hairless, with no spots, margins entire or toothed, tips blunt or notched. Stipules of paired leaves united between the leaf stalks, forming a sheath at the base. Male and female flowers on the same plant. Flowers tiny, with 0 petals, and red glands, usually with narrow red, pink or white petal-like appendages. Flowers in small clusters that look like a single flower, each cluster with several male flowers surrounding 1 female flower. Flowers spring-summer. A fringed appendage appressed to the bases of the seed cases.
All native plants on unleased land in the ACT are protected.
PlantNET description with photo and line drawing of Seed cases and leaves: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Euphorbia~dallachyana (accessed 22 January, 2021)
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