388 FETCH : 



Oudemansiella. apalosarca (B. & Br.) v. H., Fragmente zur 

 Mykologie, No. 170. 



Pileus up to 10 cms. diameter, at first hemisplxerical, then 

 broadly convex, or almost plane, covered with a thick layer of 

 mucus which sometimes appears reticulated, pale brown, or 

 grayish brown, or livid gray, or white, usually dark brown in 

 the centre, somewhat translucent ; in drier weather the pileus 

 is glabrous, not viscid ; margin smooth, appearing striate when 

 very moist, sulcato striate when old and dry, slightly incurved 

 at first ; flesh white, up to 5 mm. thick in the centre, thin 

 towards the margin, sub gelatinous and translucent when 

 moist, white and spongy when dry. Gills white, becoming 

 cream coloured or brownish when old, appearing pulverulent 

 owing to tlie large spores, ventricose, narrowed at both ends, 

 of two to four lengths, up to 1 cm. broad, the longer adnate 

 with a decurrent line on the stem, sometimes sinuate behind, 

 the shorter often abruptly truncate behind ; edge entire or 

 crenate, sharp or blunt, up to • 5 mm. thick or more ; covered 

 with cystidia, eitlier flask-shaped, 120 to 150/* long, 35 to 40 A* 

 diameter below, narrowing to 10 A* diameter about half way up, 

 or fusiform, 40 M diameter in the middle, diminishing regularly 

 above and below, thin waUed, apex rounded. Stalk usuaUy 

 curved, solid, equal, or slightly attenuated upwards, some- 

 times slightly excentric, up to 8 cm. long, 3 to 6 mm. diameter 

 in the middle , expanding at the apex and sharply defined from 

 the tissue of the pileus, white, shining, somewhat cartilaginous, 

 feebly hoary with adpressed fibrils, ribbed towards the apex, 

 usually rough with scattered, coarse, white scales towards the 

 base ; internally white and fibrous ; base expanded, sometimes 

 bulbous, truncate, with a thin root arising from the centre and 

 penetrating the wood. Spores spherical, with a short cylindri- 

 cal apiculus, white, 17 to 24 ^< diameter : basidia about 60 ft 

 long, 15-20 fJ- wide towards the apex, inflated upwards. 



This species is fairly common on erect, dead, or dying tree 

 trunks, e.g., nutmeg and mango, and is most probably parasitic. 

 It resembles an Armillaria, but lacks a ring, and the stalk is 

 distinct from the pileus. Its general diaphanous appearance 

 recalls A. mucida. Young specimens (5 mm. diameter) are 

 usually dark broAvn, studded with minute white fragments of 



