July 1906] Descriptive Synopses op Morgan's , Etc. 
161 
A. STIPE GLABROUS. 75-78. 
B. STIPE PRUINATE OR VELVETY. 
a. Lamellae free from the stipe. 79-80. 
b. Lamellae attached to the stipe. 81-85. 
II. SARMENTOSI. Stipes arising from an ascending or 
prostrate common stem. 
A. STIPES GLABROUS. 86-87. 
B. STIPES PUBESCENT. 88-89. 
III. GLABELLI. Pileus thin, membranaceous, convex 
or campanulate, commonly plicate-sulcate. Stipe slender, nearly 
always glabrous, arising from a doccose tubercle or from a circu¬ 
lar disk. Lamellae few or distant, free or adnexed. Growing on 
old wood, sticks, leaves, etc. 
a. Lamellae free or subfree. 90-96. 
b. Lamellae attached to the stipe. 
a. Lamellae colored. 97-102. 
b'. Lamellae white or pallid. 103-106. 
IV. INSITITII. PILEUS, THIN MEMBRANACEOUS, 
CONVEX OR CAMPANULATE, USUALLY PLICATE- 
SULCATE , STIPE FILIFORM, RIGID OR OFTEN FLAC¬ 
CID, MOSTLY GLABROUS, THE BASE INSITITIOUS. 
LAMELLAE EITHER ATTACHED TO THE STIPE OR 
FREE; IN THIS CASE THEY ARE ATTACHED TO A 
COLLAR WHICH ENCIRCLES THE APEX OF THE 
STIPE AND IS FREE FROM IT. 
Growing commonly on the petioles, midribs and principal 
veins of old leaves, sometimes on herbaceous stems, etc. 
A. STIPE GLABROUS. 
a. Lamellae attached to the stipe. 
a. LAMELLAE COLORED. 107-108. 
b'. LAMELLAE WHITE. 
a". Pileus colored. 109-114. 
b". Pileus white or whitish. 115-120. 
b. Lamellae adnate to a free collar. 121-126. 
B. STIPE VELVETY OR PRUINATE. 
a. Pileus colored. 127-129. 
b. Pileus white or whitish. 
a. Pileus plicate-sulcate. 130-131. 
b'. Pileus even or only rugulose. 132-134. 
§ 3. OMPHALIA. PILEUS SUBMEMBRANACEOUS; 
THE STIPE CENTRAL, CARTILAGINOUS,FISTULOSE, 
SOMEWHAT THICKENED UPWARD; THE LAMEL¬ 
LAE TRULY DECURRENT. 
