VOL. III. ] Botany of Martposa. 131 
Trisetum canescens Buckl. Frequent below 4,500 feet. Ct. 
Aira elongata Hook. Same range as last. S. Ct. 
Melica bromoides Gray. Rocky places below 4,000 feet. Devil’s 
Gulch. 
Harfordi Bolander. Common. S. 
aristata Thurb. Frequent, especially above 4,000 feet. S. 
Poa serotina Ehrh. Darrah. Local. 
Festuca ovina L. var. duriuscula. Rocky stream beds at 4,500 
feet and above. S. 
Ceratochloa breviaristata Hook. Frequent. S. 
Adiantum pedatum L. Wet rocks. S. 
Cheilanthes gracillima Eaton. Rocks. Hite’s Cove and above. 
S fom 
myriophylla Desv. Devil’s Gulch, 3,500 feet and above. S. 
Asplenium Filix-foemina Bernhardi. Occasional. S. Ct. 
Out of the 122 species enumerated above 75 or more than half 
extend into the subalpine region, while 24 are also found on the 
coast without appearing, as far as known, in the intervening terri- 
tory. It is worth while to notice that of these 24 species 12 are 
limited to the redwood district which corresponds very closely with 
our coniferous belt and most of the others are probably stragglers 
from the same region. 
Adding to these 122 species the 152 native and 4o introduced 
species which appear in the first list as also belonging to the coast 
region and the 44 native and 2 naturalized species which begin in 
the lower zone and extend into this, we have 360 as the number of 
known species belonging to the coniferous zone. The almost 
continuous pine forest, which, originally at least, covered the whole 
of this district, is no doubt the cause of the smaller number of 
species found here, by preventing that variety of condition and situ- 
ation which is requisite for producing a great variety of vegetation. 
Out of the 317 native species found here 23, nearly 8 per cent., are 
so far as known limited to this zone. 
