Municipalities

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Scientific Name

Isoetes elatior

Family Name

ISOETACEAE

Common Name

Tall quillwort

Status

Rare

Height

leaves 0.6m (60cm)

Flowers

None

Fruit

Spores

Form

Aquatic fern ally; rootstock 3-lobed; leaves, thin, grasslike; sporangia not veiled.

Municipalities

Break O'Day; Glamorgan-Spring Bay; Launceston; Northern Midlands

Communities

Aquatic

Habitat Notes

Tas. endemic. Known only from some rivers on the E. coast of Tasmania.Typically occurs with its roots in a gravel/silt substrate in moderate to swiftly flowing water with all parts submerged year round. In these situations its flaccid leaves are constantly swept sideways. In calmer water grows in mud or silt, often with I. muelleri

Site Tolerance

Waterlogged; Aquatic

Frost Tolerance

Soil Tolerance

Gravel/silt substrate; Mud; Silt

General Notes

I. eliator is the largest of the Australian species of Isoetes. Makes an attractive aquatic for a pond or cold water aquarium. Best grown in a submerged pot of soil with the surface covered with gravel. Suitable below powerlines.

Propagation Details

Propagation Calendar

Flowering Months

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Seed Collecting Months

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sowing Months

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Cutting Months

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Seed Information

Seed Collection

Spores contained in sporophylls clustered into a bulbous base

Seed Treatment Method

Seed Storage Life

Viable Seeds Per Gram

Seed Treatment Notes

Germination Time

Suitable for Direct Seeding

Cuttings

Expected Time to Take Root

Expected Time to Plant Out

Propagation by Division N.B. Transplant only from nearby to avoid disease.

Cutting Notes