1904) COPELAND—VARIATION OF CALIFORNIA PLANTS 417 
There are several different lines of interesting variation of Poly- 
podium californicum Kaulf. One of these is the elongation of the 
pinnae, some or all of them, on a frond. Fronds noticeably more 
acute than the normal are not rare, but of course the more extreme 
variations are proportionately seldom found. I have some twice as 
long as the normal; but none so con- 
spicuous in this respect as the P. 
wlgare from West Virginia, in my 
other note on this subject. Another . 
line is the increase in the size of the 
teeth and the deepening of the incisions 
between them -until the pinna is , 
Pinnatifid, even to the midrib on the 
lower side. In this case the number 
of limes the veins are forked is greatly 
increased, which disturbs one charac- 
tet often deemed specific in Polypo- 
dium; and the veins all remain free, 
which would be more notable if the 
“eparation of Goniophlebium as a dis- 
linet genus were natural. In merely 
ae plants the union of the veins to 
areolae of the Goniophlebium 
= ae or may not occur, the anasto- 
ei veg its failure being utterly with- 
_ »€ven on single fronds or single 
pinnae, 
EK AI Fas 
The anastomosis is likewise irregu- 
in thesfern known as P. Scouleri 
“aah Grev., which is so unstable 4 
be ae that it would as well | 5 ailorel- 
a " ered a form of P. californi- Fk ie 
é * own close to the beach, where — cum: a series 0° @ 
: ‘ai form of P. Scouleri is found, .-< of pinnae, which 
dre ab le, there being from three to twelve sg fon ll fold in 
. ‘Ypically” twisted and thrown forward until they 4 tected 
essing, but are sometimes perfectly plane. ——S 
