BLECHNACEAE

Small rasp fern

Vulnerable 

0.3m (30cm) 

None 

Spores 

Terrestrial fern: fronds rough; segments with terminal pinnae joined in a tail. 

Central Coast; Georgetown; Launceston 

Riparian; Dry habitat amongst rocks 

Extremely rare in Tasmania wih scattered small populations reported from only a few sites, including the banks of the River Leven and Cataract Gorge, Launceston. In cultivation grows best in morning sun or filtered sun on an acid, well drained soil which can be improved with mulching and light appications of fertiliser. 

Moist 

 

Fertile; Loam; Well-drained 

Fronds, or portions of fronds, containing ripe spores can be placed in a paper bag which is left upright in a dry and draught-free place. Spores should begin to release immediately and all spores are released within days unless the species has tough, leathery fronds. Spores settle at the bottom of the bag. Some species produce vast quantities of spores from one frond, others require dozens of fronds to produce the same amount.After sowing specks of green appear after 2-4 weeks. These are the young prothalli and during the next 6-12 months they are at risk from overcrowding and pathogens. When the first fronds appear the sporelings can be slowly hardened by gradual removal of the container cover. Great care must be taken to avoid drying out. Prick out sporelings when the second frond appears. Suitable below powerlines. 

Sori elongated or rounded, becoming confluent. spores are collected when mature on the frond. unripe sori are generally light green then change to yellowish brown and to dark brown or black when mature 

Standard 

 

 

Sow spores into a pot in a water retaining medium with good drainage. Sterilise medium & containerwith boiling water and sow spores bysprinkling a small amount onto the surface of the medium. Cover immediately with clean glass or plastic wrap and leave in a warm area in strong light but not direct sunlight. 

 

 

 

 

Yes 

May be propagated from offsets.