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25-01-2026 23:23

Tomaz Vucko Tomaz Vucko

Hello! I found this species that resembles Delitsc

06-02-2026 01:14

Tomaz Vucko Tomaz Vucko

Hello!How would you name this species? Most perith

04-08-2014 17:35

Leandro Sánchez Leandro Sánchez

Sur branche de feuillus, jusqu'à 22 mm diamètre,

05-02-2026 15:07

Vasileios Kaounas Vasileios Kaounas

Found on a fallen needle of Pinus halepensis, diam

05-02-2026 06:43

Stefan Blaser

Hello everybody, Any help on this one would be mu

18-08-2025 15:07

Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

02-02-2026 21:46

Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

02-02-2026 14:55

Andgelo Mombert Andgelo Mombert

Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

02-02-2026 14:33

Andgelo Mombert Andgelo Mombert

Bonjour,Sur le thalle de Peltigera praetextata, ne

31-01-2026 10:22

Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

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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