Langdonia McTaggart & R.G. Shivas

Type

Langdonia fraserianum (Syd.) McTaggart & R.G. Shivas on Aristida letopoda Benth.

Description

Sori in some or all ovaries of a panicle. Columella absent.

Spores usually compacted into spore balls.

Sterile cells formed from non-sporogenosu hyphae, usually absent.

Species in Australia
 
Langdonia aristidae
Langdonia aristidicola
Langdonia confusa
Langdonia fraseriana

Key based on host taxonomy
 
On Aristida1
1.  Sori bullate. Spore balls rather permanent. Sterile cells presentLangdonia aristidicola
Sori fusiform. Spore balls loose or ephemeral. Sterile cells absent2
2.  Spores 10-15 µm long. Spore wall 0.5-1.5 µm thickLangdonia confusa
Spores smaller. Spore wall c. 0.5 µm thick3
3.  Spore balls ephemeral. Spores 5.5-8 µm longLangdonia fraseriana
Spore balls semi-permanent. Spores 6.5-10.5 µm longLangdonia aristidae