Blechnum patersonii subsp. patersonii

1 Strap Water Fern at Paddys River, ACT

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Identification history

Blechnum patersonii subsp. patersonii	10 Jul 2018	dcnicholls
Notogrammitis billardierei	9 Jul 2018	KenT
Unidentified	8 Jul 2018	MatthewFrawley

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Significant sighting

MichaelMulvaney noted:

11 Jul 2018

First Canberra Nature Map record of this fern and only second recorded ACT location in last 40 years

User's notes

Appeared to be growing on the trunk of a tree fern.

3 comments

dcnicholls wrote:

10 Jul 2018

B. patersonii for sure. Does grow in Tidbinbilla and also the Blue Range. N. billardieri may be in the ACT and would be an important find.

KenT wrote:

10 Jul 2018

Thanks David, the small size of the plant (given as less than 10 cm) confused me. I expected B. patersonii to be somewhat larger given the number of fronds present.

dcnicholls wrote:

11 Jul 2018

Spore patterns are the decider. B patersonii have quite different sterile (broad) and fertile (narrow) fronds, N. billardieri have spore sori arranged in chevron like patterns.

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