05-05-2024 09:59
Gernot FriebesHello,I failed to identify this anamorph, which gr
19-04-2015 20:20
Enrique RubioHi again Could you help me with this paper? NANN
30-04-2024 16:22
François BartholomeeusenDear forum members,On April 25 2024, I found one f
03-05-2024 18:04
Riet van OostenHello, Found by Laurens van der Linde on Rubus fr
01-05-2024 23:22
Ethan CrensonHi all, Found late last week in a New York City p
29-04-2024 21:32
Robin IsakssonHi! Found in Sweden. Ascomata with haris, se
01-05-2024 12:54
F. JAVIER BALDA JAUREGUIHello, everyone.An idea for this pyreno, I found u
this beautifil species was collected several times at leaves of Rubus chamaemorus. Could be from Rutstroemiaceae, but i have not succeeded in finding necessary description there. Four related species which could be found at this host: Sclerotinia tetraspora, Ciboria latipes, Scleromitrula rubicola, Rutstroemia chamaemori - all have different spores (no mention of allantoid shapes).
May be somebody is familiar with this?
Apothecia cupulate, stipitate, 1.3–4.7 mm in diameter, stem 0.8–2 mm high, site densely at both leaf sides, without sclerotia but black stromatized lines are present at the leaf; reddish-brown, hymenial surface minutely speckled, outer surface longitudinally rugose, stem base dark to dark brown.
Excipulum from porrecta, outer hyphae incrusted by brown pigment, at the edge not enlarged hyphoid elements; asci with crozies, euamyloid ring, 97.6–125 x 12.5–14; paraphyses cylindrical, enlarged to upper part, rarely branched, septated, with brown content in upper part, about 113 x 4.4 (width at upper part); spores allantoid, with two medium oils and several tiny, 17 (15.4–18.9) x 4.7 (4.1–5) (n=11).
indeed very interesting! I looked up the protologue of R. chamaemori and also see that your spores are longer and much more curved. My reproduction of the photos is not very good, maybe someone has a pdf with better quality? Perhaps Chris?
It is Holm & Holm 1977, Kew Bull. 31(3):567-572
In R. firma I noticed variation in spore curvature, maybe this is the reason also here. Were the spores always such in your finds? The spores on the photo of Pl. 25C in Holm look like having only small polar guttules, but I am not sure. the description says simply "guttulatae" which does not help.
Zotto
there are raw pictures of the specimen,
https://www.cubby.com/pl/%234364/_3840835779bb44b195cf01598cd04670
I guess they all are done from one apos, but the specimen is not at hand now and i am not sure about spore shape variation (i will reply with this in three weeks when reach the collection).
In this examined apos all spores were that curved.
Nina.?