14 LACTARIAE OF THE UNITED STATES 
Order AGARICALES 
Family AGARICACEAE 
Genus LACTARIA 
Sections, PIPERITES, SUBLIMACINA, LIMACINA, RUSSULARIA, 
AND DAPETES 
Groups, 17, as in following synopsis of sections and groups, 
etc. 
Synopsis of sections and groups 
* Latex white at first (except іп 2. sa/monea іп XV) 
а. PIPERITES, Gills becoming neither darker with age nor pruinose; latex usually 
crid, 
Pileus without a pellicle, absolutely dry. 
Color white ОТ. РІРЕКАТАЕ. 
lor dark. II. RUSTICANAE, 
Pileus viscid when wet. 
argin involute, densely tomentose or villose. III. TORMINOSAE. 
B. SUBLIMACINA. Gills becoming somewhat deeper-colored with age and pruinose ; 
pileus very viscid, т involute and more ог less downy-tomentose at first ; 
latex less acrid than in 
Latex white, желш У. AGGLUTINATAE. 
Latex becomin, ow, V 
Latex or wounds becoming lilac. VI. ASPIDEA 
у. LIMACINA. Gills unchanged with age or sometimes slightly darker іп 7) ыша 
and slightly ргиїпозе; pileus very viscid, margin absolutely naked; latex very 
crid, 
Pileas some shade of gray or brown or red. VIII. TRIVIALES. 
Pileus some shade of yellow VII. INSULSAE. 
6, RUSSULARIA. Gills decidedly darker when mature, and pruinose; latex mild or 
ily acrid except in 2. rufa and 2. chrysorhea. 
Pileus viscid when wet, never slimy, soon dry. 
vm d т yellow ог red. 
us grayi XI. CINEREAE. 
па pale EE to fawn or mahogany. X. QUIETAE. 
Latex becoming yellow, XII, THEIOGALAE. 
Pileus not viscid when wet. 
Surface glabrous, polished, or sometimes areolate. 
esh thin, stem slender, XVII. CAMPHORATAE. 
Flesh thick, firm, stem stout. XVI. LACTIFLUAE. 
Surface pruinose to velvety. 
r some shade of fulvous. XVI. LACTIFLUAE. 
Color white or some shade of brown. XV. PLINTHOGALAE. 
Surface minutely tomentose or Squamulose. 
Color some shade of gray, XIV. GRISEAE. 
Color Metam to fulvous or isabelline. XIII. HELVAE. 
