678 iTyiiienomycetffi, TreniellacesB, Tulasnella. 



efifusa; basidiis globosis cruciatini divisis sterigmatibus longis prae- 

 ditis; sporis obovatis, 10*6, apiculatis, hyalinis, levibus; cellulis 

 cjdindraceis numerosis obscuris, intus obscure granulosis, a super- 

 ficie non prominentibus imniixtis (cystidia in mentem revocant). 



Hab. ad ligna putrida in silvis, communis, in Anierica bor. — 

 Exidia albida (Huds.) Bref. quae in Anglia provenit verisimiliter 

 diversa. 



TULASNELLA Schr. — Syll. VI p. 625, XIV p. 2.34, XVI p. 202, XVII 

 p. 209, XXI p. 452. 



1. Tulasnella tremelloides Wakef. et Pearson, Trans. Br. Myc. Soc. VI 2138 

 (1917) p. 70 (;um ic. — Late efifusa, purpurea, gelatinosa, plicato- 

 undulata, niargine concolori; basidiis clavatis, 15-18*^6,5-7, intus 

 granulosis, 4-sterigmaticis; sterigmatibus i)rimo oblongis, intus gra- 

 nulosis, 15*3-3,5, demum collapsis, ad 20 |j- longis ; sporis ellip- 

 soideis, uno latere depressis, basi lateraliter apiculatis, 810 * 4,5- 

 5,5, hyalinis ; hyphys subhymenialibus, 6-8 [i cr., basihiribus 4 p 

 cr., pallido purpureis. 



Eab. ad folia p i u e a , obtegens nidum Formicae rufae, 

 latissime efifusa, Weybridge, Britanniae (A. A. Pearson). — Impri- j 



mis consistentia gelatinosa distincta species. ; 



2. Tulasnella helicospora C. Raunkiaer, Botanisk Tidsskrifts, Bd. 3., 2139 

 1918, p. 204, cuin icou. — Late efifusa griseo-membranacea, primum 



vix visibile demum distincta; hyphis basilaribus 3-6 n cr. teuuiter 

 tunicatis septatis ; basidiis e hyphis basilaribus directe ortis obo- 

 vatis V. ovoideo-sphaeroideis 9-14 11 cr.; sterigmatibus 4, subulatis, 

 16-23 [i long. infra subinflatis 6-9 jjl cr. primum late ovoideis acu- 

 minatis dein subulato-elongatis; sporis hyalinis plus v. minus spira- 

 liter contortis v, suballantoideis, 3-5 |i latis, mox germinantibus 

 et hypham sporae subconformem efiformantibus. 



Hab. ad folia b e t u 1 i n a dejecta uda, Ordrup IMoor Zealand, 

 Dania. 



3. Tulasnella Brinkmanni Bresadola, Ann. Mycol. 18., 1920, p. 50. - 2140 

 Receptaculum late efifusum, tenue, in vivo gelatinosum, viohiceum, 



in sicco membranaceum, roseum, demum expallens, ambitu prui- 

 noso; hymenium laeve, aetate rimosum vel late difl^ractum ; sporis 

 hyalinis, oblongo-subfusoideis, hylo depressis, 13-18 ¥4-5; basidiis 

 obverse obovatis, 10-12*8-9; hyphis contextus septatis, haud no- 

 dulosis, 4-6 |i crassis. 



Eab. ad corticem A 1 n i , Westfalia Germania (Brinkmann). 



