Re: Erste Ergebnisse vom Trockenrasen

Ich halte den Fund für G.fallax.
Die im Asci hyalinen Sporen sind ein Indiz dafür. Außerdem kann G.fallax durchaus Paraphysen-Verwindungen machen.
Und letztlich habe ich dort selber G.fallax gefunden (was natürlich nichts heisst, aber immerhin...)
Der "Trichoglossum variabile" sieht auch eher aus wie G.fallax. T.variabilie kann es aber schon wegen der geringen Septenzahl nicht sein (müssten zwischen 11 und 14 liegen).
Gruß,
Axel

Hallo Felix und Jochen,
nach Baral führt die Bestimmung zum Komplex G. barlae/umbratile/nigritum.
Offenbar sieht er keine nennenswerten Unterschiede.
Hier der Schlüssel in Englich: Preliminary key to Geoglossum (Baral, Jan.
2000, fresh material)
1. Stipe covered by a c. 200-280 µm thick, strongly gelatinized layer of
strictly parallel and perpendicular, very narrow hyphae (*1.5-2.5,
apically -4 µm wide), continuous and slimy, not forming squamules .. 2
1. Stipe covered by a c. 80-120 µm thick, not or little gelatinized layer of
more or less parallel and perpendicular, much thicker hyphae (*(2-) 3-6
(-10), apically 4-8 (-10) µm wide), forming ± discrete squamules
especially in the upper part .. 3
2. Apical ring +2-2.7 x 2.2-3 µm, paraphyses apically straight, embedded in
hyaline gel, wall pale to bright brown, bright brown ones distinctly
warted, upper cell *12-41 x 3-10 µm, many ± strongly inflated; spores
*(43.5) 58-73 x 4.5-5 µm, (1-3) 4 (5-7)-celled, bright (olivaceous-)brown
already within the living asci, LBs large; head rather short (12 mm).
Often growing intermixed with G. fallax in acid meadows among large
acidophilous mosses (especially Rhytidiadelphus) .. G. glutinosum
2. ...
3. Spores within the living asci always hyaline, becoming light (to bright)
brown in dead asci or long after spore discharge, large LBs (2-)3-4.5 µm
diam., lying ± in one row, paraphyses covered (apically or laterally) by a
thin, bright brown exudate (at least partly) which is distinctly separate
from the hyaline to very pale brown cell wall, apical ring + 3-4 x 3.5-5
µm, IKI BB/?(r)B; stipe deep brownish-grey, 1.3-3.5 mm thick, upper part
distinctly floccose, basal part light grey-brown .. 4
3. Spores within the living asci finally becoming bright brown(-olivaceous or
-reddish), large LBs (1,5-) 2-3 (-4) µm diam., lying ± biseriate (to
multiguttulate), paraphyses completely without brown exudate, wall pale to
bright brown, apical ring +2-5 x 4-6 µm; stipe black, smooth or finely
floccose .. 6
4. Spores *(41-) 68-100 (-108) x 4.5-6.5 µm, 8-10-13-celled, asci *200-290 x
19-23.5 µm (+190-225 µm), wall of paraphyses ± hyaline, apex curved for
0-180°; head 8-22 x 3-5 mm, stipe 1.3-3 mm thick, 2-4x as long as head.
Often under conifers (Pinus, Picea) in acid meadows among large
acidophilous mosses (especially Scleropodium purum, Rhytidiadelphus) .. G.
fallax
4. Spores *64-78.5 x 5-5.8 µm, max. 8-celled, asci *174-230 x 17-20 µm
(+160-200 µm), wall of paraphyses pale brownish, apex curved for 0-270°;
head 10-15 mm long, stipe only slightly longer .. G. ?elongatum
6. Paraphyses apically ± straight, here mostly strongly catenate-moniliform
(cells ± isodiametrical, (5-) 7-15 (-20) x (5-) 6-10 (-12) µm, often
constricted at septa, sometimes with double cells), walls pale to bright
brown, bright brown ones with a brownish, distinctly warted gel sheath;
spores *(47-) 55-76 (-82) x 5.6-7 µm, bright brown, finally consistently
8-celled, asci *197-245 x 21-25.5 µm, apical ring IKI (r)B/BB, µm; head
12-45 x 5-25 mm, flattened, sometimes large spathulate,
elliptical(-fusoid), stipe 2-6 mm thick, 1-1.5x as long as head.
Koelerion, ... .. G. cookeianum (= C. ophioglossoides)
6. Paraphyses apically some straight but some or many curved for 45-270
(-450)° under a wide (or narrow, "barlae") arc, apical cell
elongate, 15-25 (-34) x 4-8.5 µm (or -11 µm, "barlae"), rarely
constricted at septa, walls pale to bright brown, smooth (always???);
spores *(45-) 53-95 (-100?) x (4.7-) 5-6.5 µm, finally consistently
8-celled, asci *190-240 x 18-26 µm, apical ring IKI rB or RB (espially
upper ring); head 10-22 x 3-8 mm, irregular ± fusoid, often with 2-3 deep
furrows, stipe 2-4 mm thick, 1-2.2x as long as head. Koelerion, ... .. G.
barlae/umbratile/nigritum
Gruß Peter