Plants of
South Australia
Bonamia erecta
Convolvulaceae
Erect Bonamia
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Etymology

Bonamia named after Francois Bonami (1710-1786), a French physician and botanist. Erecta meaning erect or upright, referring to its habit.

Distribution and status

Found in the north-west corner of South Australia in hummock grassland on red and yellow sand plains and dunes. Also found in Western Australia and Northern Territory. Native. Uncommon in South Australia. Common in the other States.
Herbarium region: North Western
NRM region: Alinytjara Wilurara
AVH map: SA distribution map (external link)

Plant description

Shrub with erect and ascending stems to 60 cm. Leaves oblong, covered in hairs, elliptic to 15 mm long and 11 mm wide with base rounded. Inflorescence axillary, cymose, bearing 1 or occasionally 2–3 white trumpet-shaped flowers. Flowering in winter. Fruits are brown papery capsule containing a number of seeds. Seeds are orange brown segmented seed to 2.5 mm long and 1.5 mm wide, smooth and with 2 flat side and 1 curved side. Seed embryo type is folded.

Seed collection and propagation

Collect seeds between September and December. Collect mature capsules that are drying off, turning pale brown with hard, dark seeds inside. Place the capsules in a tray and leave to dry for 1-2 weeks. Then rub the dried capsules with a rubber bung to dislodge the seeds. Use a sieve to separate any 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. This species has physical dormancy that needs to be overcome for the seed to germinate.

Seeds stored:
  Hide
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
 
MSB

1,900 (6.64 g)
50+23-Oct-2007TST206
Lake Eyre
90%
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.