VOL. 11.] 3 Ferns of Tamalpais. 131 
ashy grower, and may be found sparsely in moist places in La- 
gunitas Cafion, the cafions at Larkspur, Mill Valley, etc. 
11. ADIANTUM EMARGINATUM ‘‘ Maiden Hair,” our more com- 
mon species, grows everywhere in shady woods and on the banks 
bordering old wood roads at small elevations, sending up its beau- 
_tiful black polished {stems and tender fronds abundantly in tufts 
from its fibrous, thread-like roots. 
12. ADIANTUM PEDATUM, “ Five-fingered Fern,” seeks its home 
here at usually a greater altitude, and in very secluded nooks. This 
is the common species of Adiantum in the Atlantic and Western 
States, and it may be that it finds a more closely corresponding 
climate here at an elevation. Nothing could be more beautiful than 
a mossy bank covered with this fern, with the cool water trickling 
through the moss, as it may be seen in the higher mountain gulches 
on Tamalpais. It is found in many places: Wildwood Glen at Sau- 
salito, the cafions facing oceanward on Bolinas Ridge, the Laguni- 
tas branch cafions, Redwood Cafion; no doubt, too, in Bear Valley. 
13. CHEILANTHES CALIFORNICA has herbaceous fronds of a 
bright green, smooth and most delicately cut, and the usual dark- 
brown polished stalks. It has recently been found in the upper 
part of Redwood Cajion, growing in rather dry soil, on cliff-like 
rocks—shaded, however, and not far from the stream. 
14. CHEILANTHES GRACILLIMA is found near both summits of 
Tamalpais, in crevices of the rocks. Its fronds are slender, and 
covered on the under surface with rusty, matted wool. 
15. CHEILANTHES MYRIOPHYLLA grows at somewhat lower 
altitudes. The fronds are covered beneath with ovate scales. I 
found, in 1883, a small, dwarfed variety of myriophylla growing 
upon rocks on Mr. Liberty’s ranch, and sent them to Professor 
Eaton, who wrote me that he had received similar specimens from 
Mount Diabolo, Yosemite, Bartlett Springs and Pacheco Pass. 
Several years after I found the large form growing with the small 
one in the same place. 
The last two species are commonly called “‘ Lace Ferns.’’ They 
are of the same grayish color, and the ultimate segments of the 
fronds are minute and bead-like, but are readily distinguished by 
‘the covering of the under surface. They are found only about 
dry rocks— never near water. 
