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Humidicutis mavis

Humidicutis mavis
Photo Information
Copyright: Steve Reekie (LordPotty) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1381 W: 144 N: 3872] (12503)
Genre: Fungi
Medium: Color
Date Taken: 2009-04-15
Categories: Rain Forest
Camera: Panasonic Lumix DMC-FZ5
Exposure: f/8, 1/10 seconds
More Photo Info: [view]
Photo Version: Original Version
Theme(s): New Zealand Fungi [view contributor(s)]
Date Submitted: 2009-04-20 23:39
Viewed: 5258
Points: 22
[Note Guidelines] Photographer's Note
This is a fungi I see nearly all year round.
When I first began photographing it in 2004 we knew it as Humidicutis pura
Of course,as we all know,the pundits like to shuffle the taxon around as more info comes to light,so now we call this mavis.

Here is some information I found on the Landcare Research website :

Humidicutis mavis

Hygrophorus purus
Hygrocybe mavis
Hygrophorus mavis
Humidicutis pura

Article: Horak, E. (1973). Fungi Agaricini Novazelandiae I-V. Beihefte zur Nova Hedwigia 43: 200 p.
Description: Pileus 10-40 mm diam., conical when young later becoming plano-convex, aged specimens radially splitting, ivory or whitish, silky fibrillose, slightly striated towards the margin of the pileus, dry. Lamellae free to adnexed, white, distant, gill edge concolorous, even. Stipe 20-60 x 3-8 mm, cylindric, equal or attenuated at the base, concolorous with pileus, silky, dry, hollow, fragile, often twisted. Context white. Taste and odor not distinctive. Chemical reactions on pileus: KOH, HCl and NH3 - negative. Spores 7-10 x 4.5-5 m, ellipsoid, smooth, inamyloid. Basidia 33-42 x 7-8 m, 4-spored. Cystidia absent. Cuticle a cutis of repent, cylindric, hyaline, not gelatinized hyphae (2-5 m diam.). Clamp connections lacking.
Habitat: In soil in Dacrydium-Podocarpus forests, rarely under Nothofagus spp. New Zealand.
Notes: H. mavis (Stev.) has much the stature and the colours of H. purus Peck from North America but the dry pileus and stipe as well and the absence of clamp connections are clearly distinguishing characters.

Article: Horak, E. (1971). A contribution towards the revision of the Agaricales (Fungi) from New Zealand. New Zealand Journal of Botany 9(3): 403-462 (http://www.rsnz.org/publish/abstracts.php).
Notes: Hygrophorus mavis Stevenson (28 D) = Hygrocybe mavis (Stevenson) comb. nov. (Basionym: H. mavis Stevenson, Kew Bull. 16: 377, 1962)

Article: Stevenson, G. (1963) [1962]. The Agaricales of New Zealand: IV. Kew Bulletin 16(3): 373384.
Description: Pileus 2-4 cm, diam,, snow-white becoming slightly creamy at centre, plano-convex with a broad umbo, silky fibrillose, splitting radially; flesh pure white, fragile. Gills free or slightly adnexed, moderately distant, rather thick, surface wrinkled white. Stipe 2.5-4.5 X 0.3-0.6 cm., white, silky, smooth, hollow, fragile, more or less equal. Spores 7-8 X 5 m., oblong, hyaline, smooth. Basidia 4.0 X 6-8 m., four-spored. Noticeable fungus smell.
Habitat: habitat: under forest and scrub, Egmont, 17.6.1948, Stevenson-, Levin, 18.6.1959, Stevenson, Lowry Bay. 6.7.1949, Stevenson; Levin, 22.6.1958, Stevenson, Rotoiti, 16.5.1956 E- Kidson, Kapiti, 22.6.1958, Mavis Davidson.

The only thing I would add to that information is that I have found these growing in Nothofagus forest ,where there are broadleaf and podocarp species too.

Hope you like the latest shot from Kays Lumix FZ5

Cheers & thanks for looking,

rousettus, haraprasan, Dis. Ac., boreocypriensis, BobH, eqshannon, Pitoncle has marked this note useful
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To BobH: Um ....LordPotty 4 04-24 11:42
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Critiques [Translate]

  • Great 
  • KOMSIS Gold Star Critiquer/Gold Note Writer [C: 820 W: 0 N: 2419] (10674)
  • [2009-04-21 0:58]

Hello Steve,
a beautiful capture of a fungi ...
Great macro with fine details.
Thanks a lot for sharing,

Hello Steve
very nice shot for interesting looking mushroom species. focus, POV, colors and notes very nice. white balance also nice. thanks for sharing, best wishes

Namastay Steve,
A nice capture of this beautiful fungi. Very good details and a nice composition. Thanks a lot for sharing.


  • Great 
  • foozi Gold Star Critiquer/Gold Note Writer [C: 2791 W: 0 N: 6696] (25839)
  • [2009-04-21 7:48]

Hi steve, lovely fungi with the natural framing by the surrounding branches and leaves.
Beautiful and well balanced shot in its superbs natural background.
the composition is soft and lovely as the fungi itself.


Hi Steve,

an strange fungi for me.
Ne colours and good of details.
Fine colours.


hello Steve
great sharpness of this lovely fungi
great details and good composition
greeting lou

Hi Steve, a fine macro capture of this fungi having a flower-like shaped hat.
TFS and cheers,

  • Great 
  • BobH Silver Star Critiquer/Gold Note Writer [C: 40 W: 8 N: 192] (650)
  • [2009-04-21 17:34]
  • [+]

Hi Steve-

Nice to see the backup Lumix is giving you good results still. Though you have been photographing this species for years, to me it is yet another bizarre fungus. The fact that you see it "nearly all year round" says a lot about your fungiphilic climate. The description #1 statement "Chemical reactions on pileus: KOH, HCl and NH3 - negative" is intriguing. Is this standard characterization chemistry? What is a positive reaction and what does it indicate? I'm curious to know more- if you care to email me a note and/or reference I would appreciate it. Thanks.


Hello Steve, Nice shot of this strangely shaped fungi. Contrast is excellent here. Good POV.

I think you had to get this one in the dark...any light especially a flash would have washed out any contours or slight details...good thinking guy!

Bonjour Steve,
Trs originale publication ; merci pour le partage.
A bientt sur TN pour de nouvelles aventures.

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