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Lotus subbiflorus Lag.

Reference
Varied.Ci. 2(4):213 (1805)
Conservation Code
Not threatened
Naturalised Status
Alien to Western Australia
Name Status
Current

Open, sprawling annual, herb, to 0.7 m high, to 0.3 wide. Fl. yellow/orange, Oct to Dec or Jan to Feb. Grey, brown or red sandy or gravelly clay, dark sandy loam, often saline, granite, laterite. Plains, valleys, near lakes, creeks, swamps, disturbed sites, roadverges.

Amanda Spooner, Descriptive Catalogue, 17 August 2007
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Scientific Description

Genus Lotus. Form prostrate,spreading or scrambling. Habit herb. Stems Indumentum hairy, Pustules or glands absent, Striation (stems ribbed) not striate, Cross section terete, Spiny on any part of plant not spiny. Leaves or phylloclades Presence clearly present, Position alternate, Leaves compound, Leaves or phylloclade continuous with stem 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 15-25. Width (entire leaves only) Leaf width NaN (?). Scale leaves length mm long NaN (?). Leaflets Number more than three, Number of leaflets (if more than three) 5, Arrangement pinnately arranged. Terminal leaflet Presence present, Stalk stalked. Indumentum Presence hairy, Type simple. Stipules Presence apparently absent even from the youngest 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, Indumentum hairy (?) or glabrous (?), Striation striate (?) or not striate (?). Length Bracteole length NaN (?). Pedicel Presence present, Indumentum hairy. Length Pedicel length 1-2. Calyx Pustules or glands absent, Ribs ribless, Enlarged in fruit not accrescent. Length Calyx length 5-6. Indumentum Presence hairy, Type with simple hairs. Corolla Colour patterning multicoloured, Colour (when multicoloured - choose one colour) yellow or orange, Colour (when multicoloured - choose a second colour) yellow or orange. Length Corolla length 8-9. Indumentum Presence absent. Standard Indumentum glabrous, Auricles not auriculate. Length Standard length 7-8. Wings Auricles auriculate. Length Wing length 5-5.5. Keel Auricles not auriculate, Indumentum glabrous, Beak not beaked. Length Keel length 7-8.2. Stamens Number ten. Anthers anther length NaN (?), Position at two different levels (filaments alternately long and short). Filaments Fusion united in an open sheath with one free stamen. Length Filament length 6.5-7. Ovary Placement sessile or subsessile. Indumentum Presence glabrous. Style Indumentum glabrous, Bearded ( with a tuft of hairs at apex ) not bearded, Apex terete. Length Style length 8-8.5. Fruit Type dehiscent (a pod or follicle), Constriction not constricted between the seeds, Compression round in cross-section, Placement sessile or subsessile, Beak not beaked. Length Fruit length NaN (?). Width Fruit width NaN (?). Indumentum Presence hairy (?) or glabrous (?), Indumentum type with simple hairs (?) or with glandular hairs (?). Flowering time January, February, October, November or December. Distribution Botanical Province South-West, IBRA Bioregion Avon Wheatbelt, Jarrah Forest, Warren or Swan Coastal Plain.

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

Distribution

IBRA Regions
Avon Wheatbelt, Geraldton Sandplains, Jarrah Forest, Swan Coastal Plain, Warren.
IBRA Subregions
Dandaragan Plateau, Katanning, Lesueur Sandplain, Merredin, Northern Jarrah Forest, Perth, Southern Jarrah Forest, Warren.
IMCRA Regions
Leeuwin-Naturaliste, WA South Coast.
Local Government Areas (LGAs)
Albany, Armadale, Augusta Margaret River, Bridgetown-Greenbushes, Bunbury, Busselton, Canning, Carnamah, Chittering, Cockburn, Collie, Cranbrook, Dandaragan, Denmark, Donnybrook-Balingup, Gingin, Gosnells, Harvey, Kalamunda, Katanning, Kojonup, Manjimup, Mundaring, Murray, Nungarin, Plantagenet, Rockingham, Serpentine-Jarrahdale, Stirling, Swan, Toodyay, Wanneroo, Waroona.