o26 Hynienomycetnp, Tlielephoracere, Aleurodiscns. 



strictis ; gloeocystidiis niinntis, inconspicnis, clavatis v. cylindra- 

 ceis, liexnosis .'36-4:5 * a-O ; basidiis cnm sterigmatibns ignotis; spo- 

 ris probabilittM- in snperticie liymeniali immersis, spliaeroideis, ae- 

 qnalibus, hyalinis, 9 \l diam. 



Rab. in ligno decorticato Qnercns Gambelii, New Mexico, 

 America bor. (W. H. Long). 

 .'^. Aleurodiscus Farlowij E. A. Bnrt., Ann. Miss. Bot. Gard., 5., 1918, \9i 

 \). 182, lig. 2. — Frnctificationes discoideae, 1-1,5 mm. diam. con- 

 tlnendo elongatae, 0,5 mu). circ. cr., sparsae v. qnandoqne conflnentes, 

 coriaeeae, apicnlo v. tnbercnlo adhaerentes, margine libero, incnrvo, 

 infra obscnre griseo-murino; liymenio convexo pnlveraceo, primnm 

 avelhmeo dein in sicco sordido; hyphis hyalinis, aequalibns, crasse 

 tnnicatis, dense intricatis 3 [x cr., non incrustatis, undique radian- 

 tibns et circ. 30 [i basidia excedentibus ; paraphysibus papillato- 

 subracemosis et ramnlis 6-7 \i. cr., infra dense confei'tis ; basidiis 

 chivatis 36-54 * 9-12 ; sporis liyalinis, aequabbus, nno hitere de- 

 pressis, 13-18 * 9-12. 



Hah. ad ramos emortuos .C o n i f e r a r u m « hemlock », New 

 Hampshire et 2^e\v York, America bor. (W. G. Farlow, S. H. Bur- 



NHAM). 



9. Aleurodlscus penicillatus E. A. Burt., Ann. Miss. Bot. Gard. 5., 194 

 1918, p. 2(H, tig. 13. — Fructificationes resupinatae, eflfnsae adnatae, 

 primnm 2-3 mm. diam. dein conllnentes et usque ad 10 X 2 cm., 

 arescendo laceratae, primum pallide ochraceo-coriariae demum are- 

 scendo e paHidiores rnbescentes, margine <leterminato ; contextn 

 200 [ji circ. cr., ex hyphis laxis snberectis, hyalinis 3 jjl cr. quan- 

 doque nodoso-septatis non incrustatis efformato; hymenio basidiis 

 Latis clavatis 75 ^ 18, sterigmatibus conspicuis crassis praeditis 

 constituto; paraphysibus Hexuosis 6 [x diam. variabilibus, nonnullis 

 apice longe (4 [x) acicuhitis ; sporis hyalinis miuute echiuulatis, 

 subglobosis, 15-18 v. usque ad 20 [x diam. 



Hab. ad ramulos dejectos et frondas P s e u d o t s u g a e t a x i - 

 foliae et Tsugae heterophyllae, Idaho, Washington, 

 Oregon, Amer. bor. (J. R. Weir, C. J. Humphrey, J. M. Grant). 



10. Aleurodiscus tenuis E. A. Burt., Ann. Miss. Bot. Gard. 5., 1918, i95 

 p. 200, fig. 12. — Fructificatioues resupiuatae effusae, 1-1,5 cm. latae 



7 cm. lougae tenuissimae, albae, pruinosae, margine integro; con- 

 textu 60-90 (i cr. ex duobus generum hypharum erectarum prae- 

 dito: allis caespitosis confertis ramosis, 4,5 \i cr., papilhitis, aliis 

 obscurioribus cyliudraceis 4,5-5 ^ diam. quaudoqne clavatis et usque 



