Observation 180647: Coprinellus disseminatus (Pers.) J.E. Lange
When: 2014-09-27
( 1300m)
No herbarium specimen

Notes: Spores smooth, 7.2 – 8.6 × 3.4 – 5.3 µm. Germ pore very difficult to see, but appears to be eccentric. Basidia 4 spored. Pileocystidia cylindrical to subcapitate, 65 – 120 × 8 – 18 µm. Cheilocystidia cylindrical, pleurocystidia absent. Pileipellis without spherocysts.

Keys out close to C. heterothrix in http://www.grzyby.pl/..., however the cheilocystidia shape is a better match for Coprinellus disseminatus. Not C. disseminatus due to the short pileocystidia and lack of spherocysts on the pileipellis.

Spore measurements:

7.2 [7.7 ; 8.1] 8.6 × 3.4 [4.1 ; 4.6] 5.3 µm
Q = 1.4 [1.7 ; 1.9] 2.3 ; N = 15 ; C = 95%
Me = 7.9 × 4.4 µm ; Qe = 1.8

7.86 5.12
7.92 3.85
7.88 4.19
8.04 4.93
8.72 4.50
7.94 4.60
7.93 4.26
7.74 3.55
7.15 4.32
7.77 3.46
7.65 4.46
7.96 3.96
8.14 5.01
7.75 4.44
8.51 4.63

Pileocystidia measurements:

64.4 [83.2 ; 101.9] 120.7 × 8.4 [11.7 ; 15] 18.3 µm
Q = 2.7 [5.7 ; 8.8] 11.8 ; N = 9 ; C = 95%
Me = 92.6 × 13.3 µm ; Qe = 7.3

97.57 10.52
98.67 12.24
81.91 14.67
103.29 14.03
90.45 16.13
87.12 17.57
81.22 12.88
120.47 9.88
72.26 12.17

Images

462263
_JMG1991.JPG
462270
_JMG2049.JPG
462405
IMG_0091.JPG
Cheilocystidia 400x, zoomed in
462409
IMG_0116.JPG
Cheilocystidia 400x
462410
IMG_0113.JPG
Cheilocystidia 400x
462411
IMG_0122.JPG
Cheilocystidia 400x
462414
IMG_0146-2.JPG
Spores 1000x
462440
IMG_0183.pixi.jpg
Pileocystidia 400x
462441
IMG_0190.pixi.jpg
Pileocystidia 400x
462442
IMG_0200.pixi.jpg
Pileocystidia 400x
462476
IMG_0049.JPG
462477
IMG_0056.JPG

Proposed Names

29% (1)
Eye3
Recognized by sight: Light brown
Based on microscopic features: Matches except for the cheilocystidia shape and spore size

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
I am not sure about the germ pore
By: Alan Rockefeller (Alan Rockefeller)
2014-09-29 00:32:59 CDT (-0400)

I can almost see it when slowly changing the fine focus, but not quite.

Nice micro!
By: Byrain
2014-09-28 23:33:51 CDT (-0400)

The relevent section of the key has been updated in fan6:

4. Pileocystidia with subcylindrical neck and equal to enlarged apex.
17. With velar globose cells on pileus.
18. Cheilocystidia absent or lageniform; spores in front view with conical base; germ pore central
15. C. disseminatus
18. Cheilocystidia (sub)globose or ellipsoid; spores with rounded base; germ pore eccentric.
19. On dung; pileocystidia subcylindrical with capitate apex; spore length > 10 µm; pileus brown
12. C. curtus.
19. Not on dung, on wood-chips, compost heaps or vegetable refuse; pileocystidia subcylindric,
apex never captitate; spore length < 10 µm; pileus orange-brown . . . . . . .14. C. pyrrhanthes
17. Without velar globose cells on pileus.
20. Cheilocystidia exclusively lageniform; veil present on pileus.
21. Elements of veil 3–7 µm wide; av. Q of spores c. 1.70. . . . . . . . . . . . . . . . .17. C. heterothrix
21. Elements of veil 6–16 µm wide; av. Q of spores c. 2.00. . . . . . . . . . . . . . . . . . 19. C. allovelus
20. Cheilocystidia (sub)globose, ellipsoid, oblong, subcylindrical, utriform or mixed with lageniform
elements.
22. Cheilocystidia exclusively (sub)globose, ellipsoid or oblong.
23. Spores 7–8.5 µm long; hyphal veil present . . . . . . . . . . . . . . . . . . . . . 18. C. minutisporus
23. Spores more than 9 µm long; hyphal veil absent.
24. Pileus ochre-brown when young; pileocystidia usually with equal apex; sclerocystidia
numerous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22. C. sclerocystidiosus
24. Pileus dark brown when young, often with purple tinge; pileocystidia with broadened
apex; sclerocystidia absent or very scarce.
25. Pileocystidia with distinct broadened apex, often even capitate
24. C. plagioporus
25. Pileocystidia with equal to slightly broadened apex; . . . . . . 25. C. subpurpureus
22. Cheilocystidia mixed, globose and lageniform elements, the latter often in small number or
various shaped.
26. Pleurocystidia present; veil absent . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21. C. subimpatiens
26. Pleurocystidia absent; veil present or absent.
27. Veil absent; average spore breadth < 6.5 µm; average Q of spores > 1.80
26. C. subdisseminatus
27. Very small, hairy-fibrillose flocks of veil present on pileus, but difficult to find; average
spore breadth > 6.5 µm; av. Q of spores < 1.80 . . . . . . . . . . . . 20. C. velatopruinatus

Also, are you sure the germ pore is eccentric? Its hard to tell at that resolution, but I think I see some apical germ pores?

You should
By: Byrain
2014-09-28 17:46:22 CDT (-0400)

Save these for DNA and microscopy, there could be other options. See this key.

http://www.grzyby.pl/...

Created: 2014-09-28 15:01:44 CDT (-0400)
Last modified: 2014-09-29 00:36:30 CDT (-0400)
Viewed: 105 times, last viewed: 2016-09-28 15:06:02 CDT (-0400)
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