Ptilotus obovatus (Gaudich.) F.Muell.
Cotton Bush
- Reference
- Fragm. 6:228-229 (1868)
- Conservation Code
- Not threatened
- Naturalised Status
- Native to Western Australia
- Name Status
- Current
Shrub, 0.1-1.4 m high. Fl. pink-white-other, Jun to Dec. Variety of soils, red sand. Gravelly hills.
Scientific Description
Shrubs, stems single or several, more or less erect, persistently hairy, with dendritic hairs. Leaves present, 6-50 mm long, 3-18 mm wide, persistently hairy, with dendritic or stellate hairs; basal rosette absent; cauline leaves alternate. Spikes pink, ovoid or cylindrical, clustered, with densely arranged flowers. Bracts (1.8-)2.5-3.5 mm long, coloured or colourless, hairy, not awned or mucronate, with an obscure or a prominent midrib. Bracteoles (2.5-)3-4.5 mm long, colourless, hairy, awned or mucronate, with a prominent midrib. Outer tepals (8.3-)8.5-10(-11) mm long, not entire. Inner tepals 8-9.8(-10.8) mm long, with a basal tuft of hairs on inner face. Style 3.4 mm long, curved, obliquely fixed to ovary. Distribution: South West, Northern and Eremaean Botanical Region; IBRA regions: Geraldton Sandplain, Avon Whealtbelt, Mallee, Carnarvon, Central Ranges, Coolgardie, Gascoyne, Gibbson Desert, Great Sandy Desert, Great Victoria Desert, Hampton, Little Sandy Desert, Murchison, Nullarbor, Pilbara, Yalgoo, Dampierland.
Distribution
- IBRA Regions
- Avon Wheatbelt, Carnarvon, Central Ranges, Coolgardie, Dampierland, Gascoyne, Geraldton Sandplains, Gibson Desert, Great Sandy Desert, Great Victoria Desert, Hampton, Little Sandy Desert, Mallee, Murchison, Nullarbor, Pilbara, Yalgoo.
- IBRA Subregions
- Ashburton, Augustus, Cape Range, Carlisle, Carnegie, Central, Chichester, Dune Field, Eastern Goldfield, Eastern Mallee, Eastern Murchison, Edel, Fortescue, Geraldton Hills, Hamersley, Hampton, Katanning, Lateritic Plain, Mackay, Mann-Musgrave Block, Maralinga, Mardabilla, Merredin, Nullarbor Plain, Pindanland, Roebourne, Rudall, Shield, Southern Cross, Tallering, Trainor, Western Murchison, Wooramel.
- IMCRA Regions
- Ningaloo, Pilbara (nearshore), Pilbara (offshore), Shark Bay, Zuytdorp.
- Local Government Areas (LGAs)
- Ashburton, Carnamah, Carnarvon, Chapman Valley, Coolgardie, Cue, Dalwallinu, Dowerin, Dundas, East Pilbara, Esperance, Exmouth, Greater Geraldton, Kalgoorlie-Boulder, Karratha, Koorda, Laverton, Leonora, Meekatharra, Menzies, Merredin, Mingenew, Morawa, Mount Magnet, Mount Marshall, Mukinbudin, Murchison, Ngaanyatjarraku, Northampton, Nungarin, Perenjori, Port Hedland, Sandstone, Shark Bay, Trayning, Upper Gascoyne, Westonia, Wiluna, Wongan-Ballidu, Wyalkatchem, Yalgoo, Yilgarn.