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23-06-2025 04:03

Sulfur yellow tiny asco on hardwood
Francois Guay Francois Guay

Hi, I found this tiny sulfur yellow asco growing o

23-06-2025 13:25

Subalpine Scutellinia
Enrique Rubio Enrique Rubio

I would like to hear your opinion on this Scutelli

22-06-2025 13:52

Peziza acroornata - Literature request
DirkW DirkW

Dear friends,anyone out there with this paper?:DOU

26-05-2025 18:09

Cytospora spec./ Valsa spec.
Henk Remijn

Good day,In a burned forest near Hulst on the bord

21-06-2025 22:27

Calycina?
David Chapados David Chapados

Hi,Is this a Calycina? C. herbarum?Growing on an h

20-06-2025 08:33

Ascomycete on a herbaceous stem.
Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

11-06-2025 16:26

Literature request
Jason Karakehian Jason Karakehian

Hi everyone, I am looking for the following protol

18-06-2025 19:24

Literature request
Bernard Declercq Bernard Declercq

Good evening,On Oenanthe aquatica we collected  a

17-06-2025 14:23

¿Hyaloscypha?
Josep Torres Josep Torres

Hello.A probable Hyaloscypha from last June 1st, s

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Unknown Xylaria from the Tropical House
Maren Kamke, 08-06-2013 08:29
Maren KamkeHello again,
I found this one one wood (Angiospermae) in the Tropical House of the Hagenbeck Zoo in Hamburg.
It is black, coralloid, up to 3 cm wide and 1,5 cm high, with a 2mm wide stalk. Perethecia are 0,2 mm wide. The surface is irregular cracked and warty.
Spores are dark brown with a germ slit. Spores are (11-13) 11,7x4,25 (4-5) µm. Asci up to 110 x 6, IKI positive, blue, porus 4 x 2 µm.
Paraphyses 1,5 µm wide.
I think it is a Xylaria sp.

Thanks for your help
Regards Maren
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FELIPE SAN MARTÍN, 08-06-2013 19:06
FELIPE SAN MARTÃN
Re : Unknown Xylaria from the Tropical House
Dear Maren: No doubt, your interesting gathering is a Xylaria species. According to my collection of Mexican xylarias yours is close to X. cf. complanata of the feejeensis-rhytidophloea complex. And see Mycotaxon LXX. p. 77-82. 1999; descriptions of X. complanata and X. rhytidophloea in San Martín 1992. A Mycofloristic and cultural study of the Xylariaceae of Mexico. Doctoral Thesis. 560 pp.; Lloyd 1924. Myc. Notes # 71. Myc. Writ. 7 (6): 1237-1268; and Dennis R.W.G. 1957. Kew Bull. 1957. 297-232.
Maren Kamke, 09-06-2013 23:10
Maren Kamke
Re : Unknown Xylaria from the Tropical House
Hi Felipe,
thank you for the information. I managed to find the literature and have to study it now.
Regards Maren