Plants of
South Australia
Trachymene ceratocarpa
Umbelliferae
Creeping Carrot
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Regional Species Conservation Assessments per IBRA subregion.
Least concern
Near threatened
Rare
Vulnerable
Endangered
Critically endangered
Extinct
Data deficient
Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
Marla
Marree
Mount Gambier
Oodnadatta
Renmark
Wudinna
Keith
Yunta
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Etymology

Trachymene from the Greek 'trakhys' meaning rough and 'mene' meaning moon; alluding to the appearance of the fruit. Ceratocarpa from the Greek 'keras' meaning horn and 'karpos' meaning fruit; referring to the horn-like fruit

Distribution and status

Found scattered in the western part of South Australia, growing on red or yellow soils in sand dunes. Also found in Western Australia, Northern Territory and New South Wales. Native. Common in South Australia. Rare in the Northern Territory. Common in the other states.
Herbarium regions: North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Eyre Peninsula
NRM regions: Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands
AVH map: SA distribution map (external link)

Plant description

Decumbent to erect annual herb to 15 cm high, stems glabrous or rarely with scattered hairs. Basal leaves circular-cordate, to 21 mm long, palmately divided into 3 obovate-cuneate lobed segments, sometimes further divided into 2 or 3 secondary lobes with petiole to 40 mm long. Stem leaves smaller, less divided, glabrous or with a few scattered hairs. Inflorescence in group of 3–5 on pedicels very short. Flowers blue or white. Sepals absent. Petals ovate, imbricate, not inflexed at apex.

Fruit laterally compressed, circular, 3–4 mm long, 6-ribbed on each side; apical appendage 3–5 mm long, horizontally spreading. Seeds are 4x1

Seeds stored:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA4,300 (8.37 g)30+16-Sep-2009TST743
Eyre Peninsula
1-Jun-201095%-18°C
BGA3,100 (11.01 g)3018-Sep-2009TST763
Gairdner-Torrens
1-Jun-2010100%-18°C
Location: BGA — the seeds are stored at the Adelaide Botanic Gardens, MSB — the seeds are stored at the Millennium Seed Bank, Kew, England.
Number of plants: This is the number of plants from which the seeds were collected.
Collection location: The Herbarium of South Australia's region name.
% Viability: Percentage of filled healthy seeds determined by a cut test or x-ray.