268 BOTANICAL GAZETTE [OCTOBER 
the ligneous plants appear to constitute almost the sole vegeta- 
tion, since the annuals and the aerial parts of most herbaceous 
plants disappear in the dry season. And even in the rainy 
months, the superiority of the herbs over the shrubs, in number 
of species and of individuals, is concealed by their smaller and 
often insignificant size. 
_ The subjoined table exhibits the vegetative character of the 
indigenous plants of the different areas. In compiling it I have 
omitted varieties, doubtful and obscure species, or the few which 
cannot be satisfactorily credited to any one area. This, it is 
believed, more fairly represents the prevalent characters of the 
plant populations, than would the inclusion of every rare and 
questionable plant. 
VEGETATIVE CHARACTERS OF THE FLORA. 
Areas App get| eters | simots | Tes | Tus 
RE aca tay a. aimee 167 86 142 9 404 
evadan.......-..-. 79 296 43 19 437 
Cismontane ......... 359 306 123 25 813 
TOMALES couse 605 688 308 53 1,054 
I have classed as trees all those which in southern California 
commonly attain to fifteen feet (4.5™) in height, and have a 
tree-like trunk. Of trees 50-100 * (15-30™) high the Cismon- 
tane has six, the Nevadan four, and the Desert one; the Nevadan 
has six which exceed this height, but the other areas none. 
RELATIVE PROPORTIONS OF THE DIFFERENT CLASSES OF PLANTS. 
Annuals and | Herbaceous 
Areas Biennials Perennials Shrubs Trees ers 
prelate laser a 0.41 a2) 0.25 0.03 0.24 
WAU AT iy. 5% were 0.18 0.68 0.10 0.04 0.27 
Cismontane ......... 0.44 0.37 0.15 0.03 0.49 
Southern California...) 0.365 | 0.415 0.186 0.032 
The figures in the first four columns of the above table show 
the percentages which the number of species in each class of 
Na alin tener me Me ES fe Be 
