ft 
17 . 
If. Perns or leafless plants with three angled 
’lants bearing scalelike "leaves" or appendages but appearing 
leafless from a short distance... Psilotaeeae 
Psilotum nudxan (L) Griseb. 
AA. Plants bearing 
f-e * 0 * * * * • « *»•*#•••«* ft * * • * 
B. Fruiting bodies borne in clusters (sori) arranged in 
lines, or larger areas on the lower surface of the iruna., 
plant growing on the ground or some on supports; fe: 
anti sterile fronds similar 
C. Tip of frond coiled at maturity..... 1} 
CC. Tip of frond not coiled at maturity 
