Skip to main content

Sida spinosa L.
Spiny Sida

Reference
Sp.Pl. [Linnaeus] 2:683-684 (1753)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Slender, upright or spreading shrub, 0.2-1 m high. Fl. yellow, Feb to Sep. Clay, sandy clay. Floodplains.

Grazyna Paczkowska, Descriptive Catalogue, 25 September 1996

Scientific Description

Herb or shrub, with hairy stems. Leaves 20-75 mm long, 5-20 mm wide, not lobed; margins crenate or serrate; hairy, with stellate hairswith scales absent, Sessile glands absent; stipules present and persistent to older leaves, 10-17 mm long. Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel present, 2-5 mm long; indumentum present, with stellate hairs present, with scales absent. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) absent. Calyx green, 5-8 mm long, the lobes fused less than half their length, Sessile glands absent, simple hairs (without tubercle bases) absent, stellate hairs present, tubercle-based simple hairs absent, gland-tipped hairs absent, scales absent, Terminal appendages absent, number of ribs present, ten. Corolla yellow, 7 mm long, glabrous. Stamens many. Flowering time February, March, April, May, June, July, August or September. Distribution Botanical Province Northern or Eremaean, IBRA Bioregion Pilbara, Carnarvon, North Kimberley, Victoria Bonaparte, Central Kimberley, Dampierland and Ord-Victorian-Plain.

C. Hollister and K.R. Thiele, 11 August 2023

Distribution

IBRA Regions
Carnarvon, Central Kimberley, Dampierland, Gascoyne, Northern Kimberley, Ord Victoria Plain, Pilbara, Victoria Bonaparte.
IBRA Subregions
Augustus, Cape Range, Chichester, Fitzroy Trough, Fortescue, Hamersley, Hart, Keep, Mitchell, Pindanland, Purnululu, Roebourne.
Local Government Areas (LGAs)
Ashburton, Broome, Carnarvon, Derby-West Kimberley, East Pilbara, Exmouth, Halls Creek, Karratha, Wyndham-East Kimberley.