884 THE AGARICACEAE OF MICHIGAN 



DECUMBENT,, (of stem), with the lower end lying against the 

 substratum. 



DECURRENT, (of gills), descending on the stem, see Fig. 1, (3) 

 DECURVED, (of margin of pileus), bent down. 

 DEBRIS, the mixture of fallen leaves, twigs, wood, etc., covering 

 a forest floor. & 



DEFLEXED, same as decurved. 



DELIQUESCENT, (of gills), absorbing water and dissolving at 

 maturity. to 



DENTATE, (of gills), toothed on the edge. 

 DENTICULATE, (of gills), finely dentate. 



DENUDED, (of pileus and stem), naked or glabrous by removal 

 ot the scales, flocci, etc. 



DEPAUPERATE, undeveloped because of lack of favorable condi- 

 tions. 



^™ EkSSED ' ( ° f P Ueus )> cent ™l Portion lower than margin 

 DETERMINATE, having a fixed, definite limit 



DETERMINATION, assigning a plant to its correct place in the 

 classification. 



DIAGNOSIS, a distinctive description of a plant ' 

 DIAPHANOUS, transparent or nearly so 

 DICHOTOMOUS, (of gills), repeatedly forking in pairs 

 DIFFERENTIATED, applied to portions o/ZZoi different 



character, all derived from a homogeneous tissue 

 DIFFORMED, irregular in form. 

 DILATED, (of stem), enlarged. 

 DILUTE, (of color), reduced in strength. 

 DIMIDIATE (of pileus), semicircular in outline, (of gills) that 



reach only half-way to stem. * } ' dt 



T^rnlr! PileU " ' ' tUe Central P ° rtion of the * urf ace. 



D rsCRFTr ! f eU u'- I'' a n ° tiCeably marked ' flattened disk. 

 DLSCKL1E. (of veil, scales, etc. separate, not grown fast to and 

 continuous with the surface. 



D ^me' 0f gm , , V Set '" flPart e * Peciall >- to ™* the margin 

 oi nie pileus : a relative term 



X ™™ 'rlT ma ° f Si ! ,S,> " SeCti0n ' the h ^ ae ™» "» 

 io rum outwards from a median line 



nnw™' ( ° f PlleUS) ' the Upper ' back si <^ 



DRY ll It"; 16 " T l * tem) > C ° mp0Se<1 ° f fi " e hairi ^' 

 imi, not viscid nor hygrophanous 



EBENEOUS. (color,, black as ebony 

 UI5UKXEOUS, (color), white like ivory. 



