Labill., Nov. Holl. Pl. Sp. 1:52, t. 74 (1805).
Synonymy: Not Applicable
Common name: Wing-seeded lobelia.
Annual herbs with a distinct tap root and often with only one erect stem to 30 cm high, glabrous; leaves subpetiolate with a cuneate base and with elliptic to linear-elliptic or rarely oblanceolate blade at the base of the plant becoming sessile, often stem-clasping and lanceolate to linear-triangular above, 20-60 x 2-11 mm, obtuse and often mucronate, rarely acute, with distant lobes, serrations or teeth terminating in a swelling, sometimes with marginal papillae or rarely hairs becoming glabrous later.
Inflorescence a spike-like thyrse with leaf-like bracts becoming shorter upwards and each with a monochasium reduced to a simple flower in its axil; pedicels upturned when fruiting; sepals shortly connate, the lobes triangular, 3-5 mm long, pointed, with a few short marginal cilia at least when young; corolla 11-18 mm long along the lower lip, the tube pale-yellow and split along the upper side, the upper 2 lobes short and with a tuft of hairs at the apex, the lower median lobe obovate, blue with a yellow patch in front of the throat and larger than the similar 2 lateral lobes; anthers each with a tuft of erect hairs around the apical opening of the anther-column.
Fruit obovoid to subglobose with a truncate apex, 5-7 mm long; seed almost circular in surface view, c. 1 mm long, triangular in section with a membranous wing along each ridge.
||Habit and seed.
Image source: fig. 623d in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).|
On dunes often associated with tufts of Triodia spp.
Flowering time: Oct. (3 records).
SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
This species is distinguished from L. gibbosa by its lobed lower leaves, almost globose fruits and winged seeds.
Not yet available