PLETTROTUS 449 



upwards. Gills grey, adnate or decurrent, very unequal, linear, narrow, 

 somewhat distant. Flesh pallid, thin. Spores pip-shaped, 7-8 x 3-4jLt, 

 1-2-guttulate. On the ground, moss, and fungi. Aug. Dec. Un- 

 common, (v.v.) 



1461. P. acerosus Fr. Fr. Icon. t. 89, fig. 2. 



Acerosus, acerose, coniferous. 



P. 2-3 cm., grey, or brown, silky white when dry, membranaceous, 

 reniform, somewhat lobed, striate, flaccid. St. 2-6 x 2 mm., often 

 wanting, lateral, whitish, base strigose-rooting. Gills grey, adnate, 

 linear, crowded. Flesh pallid, thin. Spores white, globose, 4-6 fj., 

 1-guttulate. On twigs, needles, and stumps in coniferous woods, and 

 on Sphagnum in bogs. Aug. Dec. Not uncommon, (v.v.) 



1462. P. dictyorhizus (DC.) Fr. (= Calathinus dictyorhizus (DC.) 

 Quel.) Bolt. Hist. Fung. t. 72, fig. 2. 



SLKTVOV, net- work; pia, root. 



Entirely shining white. P. -5-1 cm., orbicular, or dimidiate, lobed, 

 membranaceous, very delicate, villosely silky, reticulately fibrillose at 

 the base. St. 1-3 x -5 mm., generally wanting, villose. Gills extending 

 to the base, distant, linear, lanceolate. Flesh white, thin. Spores 

 white, pip-shaped, 6-7 x 4ju, 1-guttulate. On twigs, and dead wood. 

 Oct. Uncommon, (v.v.) 



III. P. at first resupinate, then reflexed, sessile; gills 

 meeting at an excentric point. 



A. P. fleshy, uniform in texture. 



1463. P. pomgens (Pers.) Fr. (= Calathinus porrigens (Pers.) Quel.) 

 Cke. Illus. no. 288, t. 259, fig. A. Porrigens, stretching out. 



Entirely shining white. P. 2-5-10 cm., at first resupinate, sessile, 

 adnate behind, forming excentric orbicular shields, with the gills con- 

 current in an umbilicus, soon extended laterally, ascending, ear-shaped, 

 narrow at the base, dilated above, at length undulato-lobed, tough, 

 flaccid, pruinose, tomentose towards the base, diaphanous. Gills at 

 first concurrent, then decurrent, often branched, somewhat veined, 

 very narrow, crowded, linear. Flesh white, thin, compact. Spores 

 white, subglobose, 78 x 6/x. On coniferous stumps. June Nov. 

 Common in Scotland, uncommon elsewhere, (v.v.) 



1464. P. septicus Fr. (= Calathinus pubescens (Sow.) Quel.) Cke. 

 Illus. no. 288, t. 259, fig. B. crr/TTTitcos, putrefying. 



Entirely shining white. P. 2-10 mm., at first resupinate, attached to 

 the wood, then reflexed and appearing sessile with flaxy rootlets, 

 villose. St. 2-4 x -5 mm., filiform, incurved, villose, becoming erect 

 and at length vanishing. Gills converging round the rudiment of a 



