Lawrencia, named after Robert Williams Lawrence (1807-33), an English-born botanist and plant collector in Tasmania. Glomerata from the Latin 'glomeratus', meaning heap or forming a ball, referring to the dense flower clusters.
Distribution and status
Found across all of South Australia growing in saline or sub-saline flats, depressions and around salt lakes, usually associated with mallee or samphire communities. Also found in all mainland States. Native. Common in South Australia. Common in the other States.
Herbarium regions: North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern, Green Adelaide
NRM regions: Adelaide and Mount Lofty Ranges, Alinytjara Wilurara, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
AVH map: SA distribution map (external link)
Short-lived perennial sub-shrub to 50 cm high, with several soft-woody procumbent to erect branches from the base. Lower leaves obovate to cuneate, to 40 mm long and 18 mm wide, on a long stalk; margins crenate to serrate; surfaces densely hairy. Upper leaves stalkless; smaller and relatively narrower than lower leaves; margins entire or commonly 3-toothed at apex. Inflorescence bisexual; solitary or few in axils of floral leaves with greenish, white or yellow flowers. Flowering between July and August. Fruits are glabrous fruit consisting of a number of seed segments with a pointed apex and with the inner walls finely reticulate. Seeds are brown wedge-shaped seed to 2 mm long and 2 mm wide. Seed embryo type is folded.
Seed collection and propagation
Collect seeds between September and November. Collect mature fruits, those that are turning a brown colour and with the segments containing dark hard seeds. Place the fruits in a tray and leave to dry for one to two weeks. Then rub the fruits gently by hand to separate the seed segments. 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. From two collections, the seed viability was average to high, ranging from 65% to 100%. This species has physical dormancy that needs to be overcome for the seed to germinate (e.g. nicking or softening the seed coat).
|Location||No. of seeds|
|14,500 (67.9 g)|
14,500 (67.9 g)
|5,000 (4.2 g)|
5,000 (4.2 g)
|BGA||36,400 (25.49 g)||50||21-Nov-2007||RJB74450|