Isotropis iophyta Wege & R.W.Davis
Eremaean Lamb’s Poison

Scientific Description

Genus Isotropis. Form erect. Habit shrub, spindly shrub (broom-like). Stems Indumentum glabrous, Pustules or glands present (?) or 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 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 8-20. Width (entire leaves only) Leaf width 4-6. 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 (?), absent (?) or present but early deciduous (?), Indumentum hairy (?) or glabrous (?), Striation striate (?) or not striate (?). Pedicel Presence present (?) or absent (flowers sessile) (?), Indumentum hairy (?) or glabrous (?). Length Pedicel length NaN (?). Calyx Pustules or glands absent, Ribs ribless, Enlarged in fruit not accrescent. Length Calyx length 8-9. Indumentum Presence hairy, Type with simple hairs. Corolla Colour patterning multicoloured, Colour (when uniformly coloured) orange, Colour (when multicoloured - choose one colour) red, Petal claws ( the narrow base of the petals present. Length Corolla length 12. Indumentum Presence absent. Standard Indumentum glabrous, Auricles not auriculate. Length Standard length 10-12. Wings Auricles not auriculate. Length Wing length 8-10.5. Keel Auricles not auriculate, Indumentum glabrous, Beak not beaked. Length Keel length 10-12. Stamens Number nine (?) or ten (?). Anthers anther length NaN (?), Position all at the same level (filaments all the same loength) (?) or at two different levels (filaments alternately long and short) (?). Filaments Fusion free (or united at the very base) (?), united in an open sheath (?), united in a closed sheath (?) or united in an open sheath with one free stamen (?). Length Filament length NaN (?). Ovary Placement sessile or subsessile. Indumentum Presence hairy or glandular. Style Indumentum hairy or glandular towards the base, Bearded ( with a tuft of hairs at apex ) not bearded. Length Style length 10-11. 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 20-25. Width Fruit width 9-10. Indumentum Presence hairy, Indumentum type with simple hairs. Flowering time July, August or September. Distribution Botanical Province Eremaean, IBRA Bioregion Gascoyne or Little Sandy Desert.