Seeds of South Australia
Adriana tomentosa var. hookeri (Euphorbiaceae)
Water-bush
List of species for Adriana
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Seed collecting:
September to March
Herbarium regions:
North Western, Lake Eyre, Nullarbor, Eyre Peninsula, Murray
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
Gawler Volcanics (GAW02)Gawler
 Rare   (IUCN: RA d(ii))
Maralinga (GVD03)Great Victoria Desert
 Rare   (IUCN: RA d(ii))
Kintore (GVD04) 
 Least Concern
Yellabinna (GVD06) 
 Rare   (IUCN: RA d(ii))
Lake Pure (CHC07)Channel Country
 Rare   (IUCN: RA d(ii))
Mann-Musgrave Block (CER01)Central Ranges
 Least Concern
Watarru (CER02) 
 Least Concern
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Adriana]
Name derivation:
Adriana named after the French botanist Adrien de Jussieu (1797-1853). Tomentosa from the Latin 'tomentum' meaning covered with fine, matted hairs; referring to the matted hairs covering the whole plant. Hookeri named after Sir William Jackson Hooker, 19th century botany professor & director of the Royal Botanical Gardens at Kew.
Distribution:
Found across the northern part of South Australia with isolated populations in the Nullarbor and upper Eyre Peninsula. Also found in all other mainland states.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:

Ascending shrub to 2 m high and 2 m diameter, with reddish stems, sparsely or densely covered in hairs. Leaves alternate on 5-30 mm long petioles, lamina oblong or ovate-oblong to oblong-lanceolate to 7 cm long, rounded or cuneate, sparsely wavy to distantly crenate-toothed, often obtusely tri lobed, hairy.

Species consist of male and female plants. Male spikes to 17cm long, with up to 30 flowers. Female spikes to 5 cm long with l-7-flowers. Flowering between July and January.

Fruit type:
Brown, hairy ovoid capsule  to 9 mm long.
Seed type:
Brown or mottled brown, ovoid seed to 8 mm long and 5 mm wide.
Embryo type:
Spathulate.
Seed collecting:
Collect ripe fruits when they become dull in colour and seeds are mature, hard.
Seed cleaning:
Place the fruits in a paper bag and leave to dry for 1 to 2 weeks, until they split. Then rub the capsules gently by hand to dislodge the seeds. Use a sieve to separate the unwanted material. Store the seeds with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place.
Seed germination:
This species has physiological dormancy that needs to be overcome for the seed to germinate.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
MJT1231-Jan-2012-18°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.