114 Hynienoniycetfe, Agaiicacese, Leucosporse, Pleurotus. 



4. Pleurotus subsapidus Murrill, Mycologia, 1912, p. 217, Crepidopns 429 

 anhsapidus Miirrill, 1. c. p. 216. — Pileo succoso, sicco teuui breviter 

 stipitato V. biisi anj^usta infixo, e spatbulato liabelliformi; convexo 



V. i)lano 5 cm. lato, liyoroi)bano, levi, glabro e i:)allido avellaneo ; 

 himellis decurrentibus parce furcatis et ana§tomosantibus subcon- 

 fertis HUgustis tenuibus fragilibus albis dein siccis palbde umbri- 

 uis ; sporis anguste oblongis acutis levibus coacervatis sublilacinis, 

 8-9 V 3-3,5 ; stipite (si adest) brevi laterali, albo, basi strigoso-to- 

 mentoso. 



Hah. ad caudices quercinos, Muir Woods, Calilornia, Amer. bor. — 

 Plevr. sapido ut videtur affinis. 



5. Pleurotus Yuccae R. Maire, Mycolog. Bor.-Afric, ser. IV, fasc. 13, 430 

 n. 313; Bull. Soc. Hist. Nat. Afrique du Nord t. 10., 1919, p. 132, 



fig. 1 et tab. II. — Carpopboris caespitosis, plus minusve imbricatis 

 concrescentibusque, non bygropbanis ; carne alba, luiti, subinodora; 

 sporis in cumulo albo-cremeis ; stipite laterali, exannulato, brevis- 

 simo V. subnullo, carnoso-fibroso, sicco, subtomentoso v. glabre- 

 scenti, albo, solido ; pileo 3-8 cm. diam. concboideo, reniforrai v. 

 fiabelliformi, crassiusculo, carnoso-flbroso, elastico; cuticula adnata, 

 sicca, primo subtomentosa cinerascenti, dein irregulariter lacerata, 

 albida, squamis irregularibus griseis v. fuscis variegata; margine 

 involuto, pubescenti, alb*o, nec striato; lamellis confertiusculis, cum 

 bymenopboro confluentibus, arcuatis, utrinque attenuatis, interdum 

 plus niinusve crispis et anastomosantibus, decurrentibus, tenuibus, 

 angustis, albis, dein basi sordide lutescentibus ; acie antice sub- 

 denticulata ; lamellulis rotundatis v. attenuatis ; acie lamellarum 

 pilis nonnullis clavatis v. clavato-capitatis, interdum septatis be- 

 teromorpba ; mediostrati trama interraixta, bypbis incrassatis ra- 

 raosis et laticiferis praedita, subbymenio ramoso ; basidiis subcla- 

 vatis, 4-sporis, 30-35 * 6-8 ; sporis oblongo-subcylindricis, basi la- 

 teraliter apiculatis, hyalinis, levibus, eguttulalis, 9-12*4-5. 



Hah. ad truncos emortuos Yuccae elepbantipedis, 

 Alger, Africa bor. 



6. Pleurotus Rickii Bresadola, Ann. Mycologici 18., 1920, p. 27. — 431 

 Syn. Armillaria procera Eick (non Speg., Syll. IX, p. 12). — Sub- 

 caespitosus ; pileis carnosulis, ex umbilicato infuudibuliformibus, 

 albidis, eleganter griseo-fuscidulo-squamosis, 2-5 cm. latis; lamellis 

 subdistantibus, ex albo alutaceis, exiccando fuscescentibus, postice 

 longe decurrentibns; stipitibus teretibus subaequalibus infra velum 

 fusco-squamosis, e farcto cavis, 2,5-3,5 cm. longis, 5-7 mm. crassis, 



