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Electronic Flora of South Australia species Fact Sheet

Family: Campanulaceae
Lobelia simplicicaulis

Citation: R. Br., Prod. Fl. Nov. Holl. 564 (1810).

Synonymy: Lobelia gibbosa

Common name: None

Description:
Annual or perennial herbs with a tap root, and one to few stiffly erect stems up to 35 cm long, glabrous; leaves sessile, linear-oblanceolate with a cuneate base and often distant marginal teeth at the base of the plant but often already dried up by the time the flowers are open becoming linear-lanceolate to awn-shaped on the stems, 1.5-3.5 x 1.5-4 mm, acute, glabrous.

Inflorescence a spike-like thyrse with bracts much shorter than the leaves and each with a monochasium reduced to a single flower in its axil but with secondary bracts often absent; pedicels 3-10 mm long; sepals shortly connate, the lobes triangular, 2-3 mm long, pointed, glabrous; corolla 15-19 mm long along the lower lip, the tube off-white becoming blue like the lobes and split along the upper side, the upper 2 lobes short, the lower 2 lateral lobes longer but about half the length of the oblanceolate median lobe, glabrous; anther-column with a dense ring of hairs around the apical opening.

Fruit obovoid, often obliquely so, 6-8 mm long; seeds distinctly triangular in section, c. 0.45 mm long, smooth.

image of FSA3_Lobelia_sim.jpg Habit and seed.
Image source: fig. 623g in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).

Distribution:  S.Aust.: SE.   Qld; N.S.W.; Vic.; Tas.

Conservation status: native

Flowering time: Nov. — Jan.


SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia

Biology: No text

Taxonomic notes: A species often confused with or included as a variety of L. gibbosa but because of much longer seeds and glabrous corolla throat Wimmer (1953). Pflanzenreich 276b, p. 562 is followed in accepting ~t as a distinct species. The claim that it is a perennial can not be confirmed from herbarium material alone.

Author: Not yet available


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