Muelleria 8: 57 (1993) APNI
Threat status:Victoria: endangered (e); listed in Flora and Fauna Guarantee Act 1988
Leaves erect or recurved, 2–6 cm long; base dilated, overlapping, spoon-shaped, lateral margins translucent. Megasporangia orbicular to elliptical, 2–3 mm long, wall pale, thin, usually covered completely by membranous velum; megaspores 10–20 per sporangium (in outer leaves), whitish-grey, monomorphic, spherical; surface ornamented with narrow, low, sharp, anastomosing ridges which become netted on distal faces. Microsporangia present, microspores numerous.
Gold, NIS. Vic. -WIM, MID, VOLC (EHR). Restricted mainly to the Chiltern-Beechworth area, with isolated occurrences in western Victoria, and only known from shallow rock pools.
Isoetes pusilla differs from I. muelleri in its megaspore wall markings, in having only one type of megaspore, and in the production of microspores. Generally, I. pusilla is a smaller plant than I. muelleri.
|Bioregion||Occurrence status||Establishment means|
|Northern Inland Slopes||present||native|
|New South Wales|