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Hygroscopic earthstars

Astraeus hygrometricus

Description:

Crackled 'rays' on a pair of plain earth-stars.

Habitat:

Under a stand of very old Pinus radiata in pine needles.

Notes:

'Collared Earth Star' looks wrong at ..... Wiki http://en.wikipedia.org/wiki/Geastrum_tr... and..... CSIRO http://bie.ala.org.au/species/Geastrum+t... Thanks EduHerNav These are not related to the 'true' earthstars (Geastrum) Hygroscopic because it can respond to humidity by opening and closing it's 'rays'.

1 Species ID Suggestions

EduHerNav
EduHerNav 10 years ago
Barometer star
Astraeus hygrometricus


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12 Comments

Mark Ridgway
Mark Ridgway 10 years ago

EOL certainly has a different version... thanks again EHN I think those sites might have it wrong.

Mark Ridgway
Mark Ridgway 10 years ago

Thanks so much for the input EduHerNav. Can you give any references to support your suggestion? The links to Wiki and CSIRO (our government scientific organisation) above both clearly show a species with 'cracked rays'. Both those sites have been known to be in error before though...?

EduHerNav
EduHerNav 10 years ago

Astraeus has cracked rays and undefined mouth. G. triplex has a definite mouth (like a ring).

EduHerNav
EduHerNav 10 years ago

Nice pic! but that's an Astraeus, not a Geastrum.

brainpunk
brainpunk 10 years ago

Very nice!

lori.tas
lori.tas 10 years ago

I've seen them up on Mt. Wellington (above Hobart), and in Mt. Field National Park. Both very wet natural environments. We're Black peppermint dominant dry schlerophyll at our place, and, in addition to several hectares of native bush, have a stand of mature pines (which the Yellow-tailed black cockatoos love) - they'll be surrounded by Slippery Jacks soon.

Mark Ridgway
Mark Ridgway 10 years ago

Thanks Lori. Yes I remember your eyeballs. :-) I can only remember these near introduced Pinus sp. but might be wrong.

lori.tas
lori.tas 10 years ago

Not that I know of. I've only seen them in native settings. Whereas we have lots of pines on our place, and the 'shrooms that love them.

MartinL
MartinL 10 years ago

I haven't seen this type before. Are they introduced with pine?

lori.tas
lori.tas 10 years ago

Very nice earthstars, Mark (and yes, a lovely photo). I only ever seem to spot them when they look like shriveled eyeballs.

Mark Ridgway
Mark Ridgway 10 years ago

Thanks Dan. I liked this pic for the colors, shades and patterns.

Dan Doucette
Dan Doucette 10 years ago

Nice Mark! Love the earthstars!

Mark Ridgway
Spotted by
Mark Ridgway

Victoria, Australia

Spotted on Aug 24, 2013
Submitted on Sep 2, 2013

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