Coll. NV 2014.07.16
© N. Van Vooren | | | | | |
Helvella branzeziana Svrček & J. Moravec, Česká Mykol., 22 (2): 87 (1968).
Basionym Helvella branzeziana Svrček & J. Moravec, Česká Mykol., 22 (2): 87 (1968).
Diagnosis PiIeus 7-15 mm latus, iam novus disciformis, orbicularis, distincte obtuse pallideque marginatus et ibi solum leviter elevala, dein convexus, regularis, denique ad stipitem adpressus, dein subglobosus vel oblongus sed non ephippinus, centro tantum indistincte depressus. Thecium cinereo-nigrum, haud nitidum, cinereo-albide marginatum. Pars externa pilei pallide cinerea, subnuda, subtiliter venosa, venulis oblusis, nonnumquam inconspicuis, usque ad marginem attingentibus. Stipes 7-20 mm longus, 1,5-3 mm crassus, cylindraceus, rectus vel curvatus, totus subtillime griseo pruinosus, basi plerumque subclavato-incrassatus. Excipulum intus e cellulis angulato-globosis, 12-42 µ diam., extus e hyphis fasciculatis, usque ad 150 µ longis, 7-16 µ crassis, hyalinis, nudis, tenuiter tunicatis, cylindraceis, constricto septatis, apice obtusis usque clavatis constat. MeduIIa e textura intricata, e hyphis flexuosis, septatis, ramosis, 3-5 µ crassis, hyalinis, tenuiter tunicatis. Hypothecium indistinctum, cca 50-70 µ altum, hyalinum. Asci 250-300 × 18-20 µ, cylindracei, octospori, sporis monostichis ; membrana ascorum non amyloidea. Paraphyses 3-3,5 µ, crassae, apice ad 4-5 µ sensim incrassatae, rectae, fuscidulae usque subhyalinae. Sporae 17-20,5 × 10-13 µ, late ellipsoideae, laeves cyanophilae, primum nonnumquam grosse pustulatae, cum guttula unica magna et nonnullis guttulis parvis.
Hab. Ad terram nudam argillaceam. Aestate-autumno. LocaIitas typi. Bohemia, Branžež prope Knĕžmost haud procul Mladá Boleslav, ad terram nudam argillaceam calcaream viae cavae profundae extra silvam sub fruticibus frondosis, in declivitate ad septentrione vergente (expositio borealis), cca 300 m s. m., 25.VI.1966 leg. Jiři Moravec (typus PR 646983). Ibidem 6.X.1967 leg. J. Moravec et M. Svrček
Type PR 646983 (PRM) - holotypus
MycoBank 331839
Literature
Mombrini S., Biraghi M., Mariani A., Barbanera M. 2015. Helvella branzeziana e Helvella phlebophora Due interessanti ascomiceti della pianura bergamasca (Italia). Bolletino AMER, 93: 28-40.
Perić B. 2011. Helvella branzeziana (Ascomycota, Pezizales) – première récolte Monténégrine d’une espèce rare. Czech Mycology, 63 (2): 177-187.
Svrček M., Moravec J. 1968. Helvella (Leptopodia) branzeziana sp. nov., eine neue Spezies aus Böhmen. Česká Mykologie, 22 (2): 87-89.
Classification: Helvellaceae, Helvella
Created on 05/05/2015.
Updated on 01/08/2023.
