8 
DECUM'BENT, applied to a stipe hav¬ 
ing- the lower part resting- on the 
g-round. 
DECUR'RENT, a'pplied to lamellae 
which are prolonged down the stipe. 
DECURVED', curved downward. 
DEFLEXED', bent or turned down. 
DEHIS'CENCE, the spontaneous open¬ 
ing of a peridium at maturity to dis¬ 
charge the spores. 
DEHIS'CENT, opening at maturity to 
discharge the spores. 
DELIQUBS'CENT, becoming liquid at 
maturity. 
DELIMITATION, the marking, fixing 
or prescribing of limits or boundaries. 
DEN'DROID, DEN'DRIFORM, tree- 
shaped. 
DENTATE, toothed. 
DENTIC'ULATE, finely dentate. 
DENU'DATE, naked; exposed; not im¬ 
mersed. 
DEPAU'PERATE, starved; stinted; 
undeveloped. 
DEPRESSED', as if pressed down or 
flattened; sunk below the level of the 
surrounding margin. 
DESCEND'ING, applied to a marginal 
veil when, in the young stage, its mar¬ 
ginal attachment is below the level of 
its stipe-attachment; , a ring formed 
from it is called superior. 
DES'ICCATE, DES'ICCATED, dried. 
DETER'MINATE, clearly defined; hav¬ 
ing a fixed, definite limit. 
DETERMINA'TION, assignment to the 
proper place in a classification or series. 
DIAGNO'SIS, scientific discrimination 
of any kind; a short distinctive descrip¬ 
tion, as of a plant. 
DIAPH'ANOUS, permitting the passage 
of light; transparent; translucent. 
DICHOT'OMOUS, regularly dividing by 
pairs from below upward. 
DICHOT'OMY, a mode of branching by 
constant forking or dividing in pairs. 
DICOT YLE'DON, exogen; phenogam 
exogenous in growth, having two or 
more cotyledons and usually net-veined 
leaves; as maple, pine, clover, etc. 
DID'YMOUS, double; of two equal 
parts. 
DIFFERENTIATED, exhibiting differ¬ 
entiation. 
DIFFERENTIATION, (a) descrimina- 
ting between by observing or describ¬ 
ing the differences; (b) the evolution¬ 
ary process or results by which origin¬ 
ally indifferent parts or organs become 
differentiated or specialized in either 
form or function; specialization. 
DIF'FLUENT, readily dissolving. 
DIFFORMED', DIF'FORM, irregular 
in form, not uniform. 
DIFFUSE', spreading widely, loosely 
and irregularly. 
DIG'ITATE, furnished with fingers; di¬ 
viding like the fingers of the hand. 
DILATED, expanded; extended; en¬ 
larged. 
DILUTE', thinned, reduced in strength, 
as applied to solutions, colors, etc. 
DIMID'IATE, applied to lamellae that 
reach only half way to the stipe; ap¬ 
plied to the pileus when it is semi-cir¬ 
cular in outline or nearly so. 
DIMOR'PHIC, DIMOR'PHOUS, exist¬ 
ing in two distinct forms. 
DIMOR'PHISM, the property of existing 
under two distinct forms. 
DISC, (a) any flat circular disk-like 
growth; (b) the central portion of the 
upper surface of a pileus; (c) the cup¬ 
shaped or otherwise, variously shaped 
hymenial surface of a Discomycete. 
DIS'CIFORM, DIS'COID, DIS'COIDAL, 
of a circular, flat form; disk-shaped. 
DIS'COCARP, ascocarp in which the 
hymenium or disc lies exposed while the 
the asci are maturing, as in Peziza, 
Morchella, etc. 
DISCOMYCE'TES, a group of ascomy- 
cetous fungi in which the hymenium is 
exposed; the fruiting body is cupular, 
discoid, or clavate, and sometimes con¬ 
voluted. 
DISCRETE', distinct; separate; not 
grown together; opposite to concrete. 
DISK, see disc. 
DISSECTED, cut deeply into many 
lobes or divisions. 
DISSEP'IMENTS, dividing walls; as 
between the pores in polypores. 
DISSOCIATION, separation. 
DISTAL, pertaining to the apex or out¬ 
er extremity. 
DISTANT, far apart. 
DISTICHOUS, disposed in two rows. 
DIVAR'ICATE, separating at an ob¬ 
tuse angle. 
DOR'SAL, pertaining to the back; to 
the upper surface of the pileus. 
DORSIVEN'TRAL, said of a body hav¬ 
ing two nearly symetrical but unlike 
sides facing in opposite directions. 
DOR'SUM, the back of any organ. 
DOWN, fine soft pubescence. 
E- or EX-, prefix signifying “destitute 
of,” “outside of” or “away from.” 
EBE'NEOUS, black like ebony. 
EBUR'NEOUS, ivory-white. 
ECCENTRIC, excentric. 
ECH'INATE, furnished with stiff bris¬ 
tles. 
ECHIN'ULATE, minutely echinate. 
ECOL'OGY, see oecology. 
ECTO-, prefix signifying “outside.” 
ECTOBASIDTA, basidia placed on an 
exposed surface, not enclosed. 
EDENTATE, without teeth. 
EFFUSED', spread over the matrix 
without regular form. 
EFFU'SO-REFLEXED', effused with 
upper margin reflected froming a pileus. 
EGG, a young plant before rupture of 
the volva, in phalloids, amanitas, etc. 
EGUTT'ULATE, not containing guttu- 
l ae 
r, '‘ LlP'SOID, a- solid figure all plane 
sections of which are ellipses or circles. 
BLLIPSOI'DAL, shaped like an ellip¬ 
soid. 
