Citation: A. Braun, Monatsber. K. Wiss. Berl. 1868:541 (1868).

Synonymy: Isoetes humilior

Common name: None

Description:
Corm 2- or 3-lobed, embedded in the substrate; sporophylls spreading or erect, 4-32 cm long, terete, imbricate near the base and partially covering the inner sporophyll bases; sporangia variable, orbicular to oblong; megaspores dimorphic, 0.25-0.7 mm diam., white, ornamentation variable, irregularly ridged; microspores usually absent.

	Sporophylls: I. muelleri
Image source: fig. 19b in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).

Published illustration: Cunningham et al. (1982) Plants of western New South Wales, p. 27.

Distribution:  S.Aust.: NW, LE, FR, EA, EP, NL, SL, SE.   All States. Conservation status: native Flowering time: No flowering time is available

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

Biology: A polymorphic species very variable in size; in S.Aust. the sporophylls are usually 5-15 cm long. The species is apomictic and often forms extensive colonies.

Author: Not yet available