[Vol. C 

 50 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



superficie villosa; peridium 200-300 M crassitudine superne tenuis- 

 simum vel absens inferne, "sepia" (Ridgway) sub lente, radialibus 

 hyphis septatis, perpendicularibus superficiei fructificationis, pseudo- 

 parenchyma faciens cuius cellulae 9-10x11-13 M , septis hypharum 

 constrictis, ex peridio labuntur et globosae vel oblongae, conidii- 

 formes fiunt ; basis sterilis attenuata, hyphis hyalinis, septatis, 3-5 p 

 diametro confecta; ductus lactiferi numerosi ad basim attenuatam, 

 septati, 6-8 ^ crassitudine; rhizomorphi pseudoparenchymate, 

 brunnei, multis ductibus lactiferis muniti ; columella variabilis, in- 

 conspicua vel percurrens aut ramosa, ab base non distincta, 

 eodemque colore, ductibus lactiferis paucis; gleba carnosa, "Isabella- 

 brownish olive" (Ridgway), inferne aperta maturitate; 



parvi et irregul 



cystidia hyal 



duct 



20 V 4-5 M ; basidia 



brevibus 



3-6 n longitudine ; sporae ovatae vel ellipsoideae, uno cum vacuolo 

 magno, pedicellatae, "yellow ocher" vel "ochraceous tawny" (Ridg- 

 way), 12-14.5x9-11.5 ^, exosporio crasso, verrucoso-rugoso. 



Habitat in foliis putndis Qucrcus agrijoliae. California. Novem- 

 bri. 



Type : in Univ. Cal. Herb., Zeller Herb., and Dodge Herb. 



Fructifications globose, with attenuate base and flattened 

 or plane above, some quite pyriform, " varying from light 

 brown to a dark yellowish brown or maroon except on a 

 limited area on the under side next to the very short stipe 

 which is almost white" (Gardner), mummy-brown to clove- 

 brown above and clay-color to olive-brown below (in alcohol), 

 0.8-2 cm. in diameter, surface velvety; peridium 200-300 /x 

 thick above, very thin or wanting below, sepia under the 

 microscope, composed of radial, septate hyphae perpendicular 

 to the surface, forming pseudoparenchymatous tissue having 

 cells about 9-10x11-13 /x, the septa of the hyphae becoming 



constricted and finally sloughing off globose to oblong conidia- 

 like cells from the surface of the peridium; base sterile, 

 composed of septate, hyaline hyphae 3-5 » in diameter, 

 with lactiferous ducts more numerous towards the atten- 

 uate point which leads to a heavy, branched rhizomorph; 

 lactiferous ducts of base 6-8 j* broad; rhizomorphs 

 pseudoparenchymatous, brown, supplied with numerous 

 lactiferous ducts; columella variable from inconspicuous to 

 percurrent, extending to the peridium above, sometimes with 



