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Chorizema obtusifolium (Sweet) J.M.Taylor & Crisp

Reference
Austral.Syst.Bot. 5:298 (1992)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Erect or spreading or trailing shrub, to 0.5 m high. Fl. orange & pink/orange & red, Sep to Nov. White or grey sand, gravel. Flats, dunes.

Grazyna Paczkowska, Descriptive Catalogue, 28 May 1996
Image

Scientific Description

Genus Chorizema. Form erect or prostrate,spreading or scrambling. Habit shrub, spindly shrub (broom-like). Stems Indumentum glabrous, Pustules or glands absent, Striation (stems ribbed) not striate, Cross section terete or flattened, Spiny on any part of plant not spiny. Leaves or phylloclades Presence clearly present, Position alternate, Leaves simple, Leaves or phylloclade continuous with stem not continuous with stem, Cross section of leaf or leaflet flat with flat margins, Margins of leaf or leaflet entire, Tuberculate tubercles absent, Pustules or glands absent. Length Leaf length 10-42. Width (entire leaves only) Leaf width 2-4. Scale leaves length mm long NaN (?). Indumentum Presence hairy, Type simple. Stipules Presence apparently absent even from the youngest leaves (?), present and persistent to older leaves (?) or present but early deciduous ( only visible on youngest leaves ) (?), Glands with glands (?) or without glands (?), Ribs ribbed (?) or ribless (?). Length Stipule length NaN (?). Bracteoles Presence present and persistent or present but early deciduous, Indumentum hairy (?) or glabrous (?), Striation striate (?) or not striate (?). Length Bracteole length NaN (?). Pedicel Presence present, Indumentum hairy. Length Pedicel length 1.5-2. Calyx Pustules or glands absent, Ribs ribless, Enlarged in fruit not accrescent. Length Calyx length 9-9.5. Indumentum Presence hairy, Type with simple hairs. Corolla Colour patterning multicoloured, Colour (when multicoloured - choose one colour) pink or orange, Colour (when multicoloured - choose a second colour) pink or orange, Petal claws ( the narrow base of the petals present. Length Corolla length 15-16. Indumentum Presence absent. Standard Indumentum glabrous, Auricles not auriculate. Length Standard length 15. Wings Auricles not auriculate. Length Wing length 10-11. Keel Auricles not auriculate, Indumentum glabrous, Beak not beaked. Length Keel length 11. Stamens Number ten. Anthers anther length 0.9, Position at two different levels (filaments alternately long and short). Filaments Fusion free (or united at the very base). Length Filament length 9-11. Ovary Placement stipitate. Indumentum Presence hairy or glandular. Style Indumentum hairy or glandular towards the base, Bearded ( with a tuft of hairs at apex ) not bearded, Apex terete. Length Style length 13.5. Fruit Type dehiscent (a pod or follicle), Constriction not constricted between the seeds, Compression round in cross-section, Placement stipitate, Beak not beaked. Length Fruit length 15. Width Fruit width 5. Indumentum Presence hairy, Indumentum type with simple hairs. Flowering time September, October or November. Distribution Botanical Province South-West, IBRA Bioregion Mallee or Esperance.

C. Hollister and K.R. Thiele, 17 April 2024

Distribution

IBRA Regions
Esperance Plains, Mallee.
IBRA Subregions
Eastern Mallee, Recherche.
IMCRA Regions
WA South Coast.
Local Government Areas (LGAs)
Dundas, Esperance.