Observation 200151: Geopora Harkn.
When: 2015-03-02
Herbarium specimen reported

Notes: In sandy/gravelly disturbed soil—sloped embankment constructed of fill with organic matter in 1993. Exterior surface orange brown, velvety under hand lens. Interior pale yellow brown. Brittle whitish flesh. Mild odor and taste.

Elevation 3200’.

Gilkey’s description of H. variiformis: “Ascocarp .7-3 cm, cinnamon-buff (R.) to cream-buff (R.), somewhat paler within; form more or less globose to somewhat depressed, minutely velutinous without, exceedingly variable within, from Peziza-like with simple cavity and conspicuous opening to….”

Proposed Names

-9% (2)
Recognized by sight: hypogeous hollow round fruit bodies up to 3 cm. with one empty chamber and one opening to the exterior, exterior surface without warts and brown hairs
Used references: http://www.natruffling.org/ truffle key by Trappe and Castellano
Based on chemical features: iodine (2% tincture) orange on flesh and fertile surface
-12% (4)
Eye3
Recognized by sight: orange brown exterior, simple hollow chamber, one opening to exterior, mild odor and taste, possibly growing from buried conifer wood
Used references: Gilkey’s description in Mycologia Vol.39 http://www.jstor.org/stable/3755176 (see notes) and Matchmaker which describes var. variiformis as orange brown
49% (2)
Eyes3
Recognized by sight

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Thanks, Daniel
By: Terri Clements/Donna Fulton (pinonbistro)
2015-03-08 14:47:46 EDT (-0400)

My first thought on this obs was Geopora but the Trappe/Castellano macro key on NATS led me to Hydnotrya. The only Hydnotrya species that fit was what Gilkey described as the Peziza-like version of H. variiformis with simple cavity and conspicuous opening.

Terri

Because these are exposed and at least partially epigeous
By: Daniel B. Wheeler (Tuberale)
2015-03-08 13:18:43 EDT (-0400)

they do resemble Geopora arenicola, which does fruit in association with cottonwood.

Need to see microscopy on this one, Terri/Donna.

Gilkey’s work
By: Daniel B. Wheeler (Tuberale)
2015-03-08 13:14:27 EDT (-0400)

has been revised several times. Her collections were bequeathed to Dr. James Trappe, who later revised a number of the descriptions.

Geopora usually has abundant hairs matting around the sporocarp. These are not microscopic, but quite pronounced.

If Hydnotrya, must have host tree nearby. Possible Hydnotrya hosts include: Douglas-fir, pine, hemlock, true firs. Host trees can be at considerable distance away from fruiting body.

From Field Guide to North American Truffles by Matt Trappe, Frank Evans, and James Trappe this comes closest to Hydnotrya variiformis var. variiformis, which has an orange-brown peridium.

Hydnotrya variiformis var. pallida is 2.54-3 cm across, and typically has pale yellow or yellow-brown tinted exterior and interior. Chambers are colored white or pale on the interior, but shared walls have yellow to yellow-brown coloration. Var. pallida to date has been described only from Pacific coastal states. An extension to 3200’ in Arizona would be difficult to imagine.

I
By: Elsa (pinknailsgirl)
2015-03-08 06:56:08 EDT (-0400)

read everything and get to my own conclusions. You shouldn’t say that I didn’t read. I can’t make you see what you don’t want to see. But don’t worry, I have my own opinion, you have yours. I can live with that, don’t you?

If you can’t be bothered to read Gilkey’s description
By: Terri Clements/Donna Fulton (pinonbistro)
2015-03-07 21:11:36 EST (-0500)

then I give up. You were wrong when you said this couldn’t be Hynotrya because it lacked the folded/convoluted center. You are wrong about Geopora since all of the keys refer to the brown hairs being visible under the hand lens.

About Geopora
By: Elsa (pinknailsgirl)
2015-03-07 21:06:12 EST (-0500)

“Infertile (outer) surface and stem
Varying in colour from pale-brown to mid-brown, the scurfy outer surface is infertile and is covered in microscopic light-brown hairs. (The spores are produced on the shiny inner surface of the cup.)”

http://www.first-nature.com/fungi/geopora-arenosa.php

From Gilkey re H. variiformis:
By: Terri Clements/Donna Fulton (pinonbistro)
2015-03-07 20:59:48 EST (-0500)

“The ascocarp exhibits wider variation than has previously been known in any single species of this genus. The simple Peziza-like shape found frequently in this species has typical Gyrocratera characters of a hollow fruiting body with a single apical opening. The interior, which is lined by hymenium, may be even, or may be complicated by projections from the inner surface. On the other hand, the extremely complicated forms, which also are common in this species, are typically Hydnotrya-like, in Fischer’s sense (Mykolog. Beitr. 33” 108-114. 1927), for the hymenium-lined interior is divided, by the fusion of folds, into canals and chambers which may open externally at several points.
This species, by closing the gap between Gyrocratera and Hydnotrya and identifying them as one, simplifies the explanation of the relationship in our American species…"

As to your reference to scurfy
By: Terri Clements/Donna Fulton (pinonbistro)
2015-03-07 20:38:18 EST (-0500)

Scurfy is quite different from hairy. Geopora has brown hairs. I’ve already said that this obs is velvety under the hand lens. Many Hydnotrya spp are velvety.

I posted the Key to NA Truffles below.
By: Terri Clements/Donna Fulton (pinonbistro)
2015-03-07 20:36:41 EST (-0500)

Please read it. It is the latest and best key available. As to H. variiformis it lives up to its name. It can have a simple empty cavity or be convoluted. If you would bother to read my references you would see: From Gilkey: “Ascocarp .7-3 cm, cinnamon-buff (R.) to cream-buff (R.), somewhat paler within; form more or less globose to somewhat depressed, minutely velutinous without, exceedingly variable within, from Peziza-like with simple cavity and conspicuous opening to….” Once again I encourage to read what she said in Mycologia or Jstor. To repeat it is simply not true that Hynotrya species all have folded or convoluted interiors as you imply. If you would read the literature I’ve cited you would find that out.

I posted the Key to NA Truffles below.
By: Terri Clements/Donna Fulton (pinonbistro)
2015-03-07 20:35:53 EST (-0500)

Please read it. It is the latest and best key available. As to H. variiformis it lives up to its name. It can have a simple empty cavity or be convoluted. If you would bother to read my references you would see: From Gilkey: “Ascocarp .7-3 cm, cinnamon-buff (R.) to cream-buff (R.), somewhat paler within; form more or less globose to somewhat depressed, minutely velutinous without, exceedingly variable within, from Peziza-like with simple cavity and conspicuous opening to….” Once again I encourage to read what she said in Mycologia or Jsor. To repeat it is simply not true that Hynotrya species all have folded or convoluted interiors as you imply. If you would read the literature I’ve cited you would find that out.

I don’t see only photos Terri
By: Elsa (pinknailsgirl)
2015-03-07 20:03:45 EST (-0500)

but a photo sometimes speaks more than a thousand of words, specially if they misinterpreted. I didn’t find the referred keys, but I read many descriptions. Here is one of them:

“Name derivation: Coined by Berkeley and
Broome (1846) from Greek, hydno- (fungus)
and -trya (a hole or opening), in reference to
the openings from the gleba to the surface
of the fruit-body.
Fruit-bodies irregular and infolded, 0.5–8
cm broad. Peridium ivory to pink, orange
brown or dark purplish brown, smooth or
minutely scurfy. Gleba hollow to fleshyfirm,
concolorous with the peridium and
permeated with small to large, labyrinthine
chambers formed by complex infolding and
fusing of the fruit-body walls…”
“Keys and descriptions: Gilkey’s (1954b) treatment is the best available, but the genus is in serious need of revision and updating. Trappe and Castellano (2000)described two new species. Castellano et al. (1999) and M. Trappe et al. (2007)described and illustrated five species between them”

http://www.fs.fed.us/pnw/pubs/pnw_gtr772.pdf

where are the labyrinthine chambers on your specimens? Look at http://www.mykoweb.com/... that show your description from Gilkey and see the photos. I think your specimens are different, all sphere like, nothing of irregular.

This book has the referred key. The problem is that I see a scurfy outer surface (in the other observation I coudn’t be certain of that).

Here’s the North American Truffling Key
By: Terri Clements/Donna Fulton (pinonbistro)
2015-03-07 19:03:51 EST (-0500)

Please note item 3 in the key. Under the hand lens this obs was velvety but lacked brown hairs. See my notes above.

Key 2: Ascomycete Genera Based on Macroscopic Characters

1. In dry to wet habitats under shrubs or trees 2

1. In true deserts with herbs or shrubs 44

2. Truffle with one to many empty or spore-filled chambers or canals 3

2. Truffle solid, often marbled with veins 23

3. Truffle sides and top with brown hairs (observe with hand lens) 4

3. Truffle sides and top lacking brown hairs, but a tuft of hairs may be present at base 8

4. Truffle surface warty 5

4. Truffle surface not warty but may be ridged or convoluted 6

5. Iodine on cross-section of mature truffle causing a blue to black reaction Amylascus

5. Iodine on cross-section of mature truffle causing a yellow to brown or no reaction Genea

6. Truffle with a single, brown-lined chamber Hydnocystis

6. Truffle chamber white-lined or chambers or canals more than one 7

7. Truffle with broad chambers of various shapes; Northern Hemisphere Geopora

7. Truffle with narrow, labyrinthine canals; Australasia Labyrinthomyces

8.(3) Chambers one or a few, often broader than 3 mm 9

8. Chambers or canals many, generally less than 3 mm broad 17

9. Chamber single, in youth containing cottony hyphae, at maturity spore powder 10

9. Chambers single to several, empty 11

10. Peridium more than 3 mm thick, the surface yellow, brown, blue or black; world-wide

Elaphomyces

10. Peridium less than 3 mm thick, bright orange to scarlet; New Zealand (and introduced to England) Paurocotylis

11.(9) Truffle surface minutely warty 12

11. Truffle surface smooth to scabrous 14

12. Truffle with a tuft of hairs at base Genea

12. Truffle lacking a basal tuft 13

13. Truffle reddish brown to purple Genea intermedia

13. Truffle grayish yellow, brown or black Genabea

14.(11) Truffle with a large, single chamber and a basal stem Sarcosphaera

14. Truffle with one to several chambers, lacking a basal stem 15

15. Iodine on cross-section of fresh, mature truffle causing a blue to black reaction Peziza

15. Iodine on cross-section of fresh, mature truffle causing a yellow, orange, red or no reaction 16

16. Truffle lacking a basal tuft of hairs; Northern Hemisphere Hydnotrya

16. Truffle with a basal tuft of hairs; Southern Hemisphere Gymnohydnotrya

No they are not
By: Terri Clements/Donna Fulton (pinonbistro)
2015-03-07 18:46:35 EST (-0500)

they are brown and part of the macro keys. Do you see Gilkey’s description of H. variiformis? It comes in two forms, one of which has the convoluted interior you reference at SVIMS. This is the other form she describes. I appreciate your input but I think judging this obs by photos online rather than the source work and keys I reference is not appropriate. Again, please go through the key and read the reference material.

Terri

The hairs
By: Elsa (pinknailsgirl)
2015-03-07 18:38:14 EST (-0500)

in Geopora are microscopic, but could give that tomentose appearance that I see on 4th photo.

Also see
By: Terri Clements/Donna Fulton (pinonbistro)
2015-03-07 18:31:52 EST (-0500)

Gilkey’s descriptions of H. variiformis on pages 444 and 445 of http://www.jstor.org/stable/3755176

Terri

Elsa
By: Terri Clements/Donna Fulton (pinonbistro)
2015-03-07 18:28:56 EST (-0500)

Have you gone through any of the keys? This cannot be Geopora—no brown hairs on the exterior. The keys at NA Truffling and in Arora’s book point to Hydnotrya. In addition if you read Gilkey’s description in my notes you’ll see this is a very good match for H. variiformis.

Terri

Again
By: Elsa (pinknailsgirl)
2015-03-07 18:12:55 EST (-0500)

this seems to be Geopora (arenosa/arenicola or other).

https://www.google.pt/...

https://www.google.pt/...

Diferent from http://www.svims.ca/...

Created: 2015-03-05 16:50:22 EST (-0500)
Last modified: 2015-06-27 13:09:39 EDT (-0400)
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