Mariposa is the Spanish word meaning butterfly, and was applied on account of the marvelous resemblance of the markings of the petals of some of the forms to the wings of that insect.
FOOTNOTE
[1] Mr. Carl Purdy.
INTRODUCTORY
Situated on the western verge of the continent, so far removed from the other parts of our country, not only by great distance, but by those mighty natural barriers that traverse the continent from north to south, California is eminently individual in her natural features. Stretching through nine and one half degrees of latitude, with a sea-coast of seven hundred miles, and several ranges of fine and lofty mountains, there is probably not another State in the Union that has so wonderful a diversity of climate and vegetation. Her shores, bathed by the warm Japan Current, or Ku-ro Si-wa, which is deflected southward from Alaska, are many degrees warmer than their latitude alone would warrant.
Her general topography is simple and readily understood. The Sierra Nevada, or "snowy range," upon the eastern boundary, with its granite summits and its shoulders clothed with successive belts of majestic coniferous forests, with an occasional snow-peak towering above the range, forms the eastern wall of the great Central Valley, which is inclosed upon the west by the Coast Range, less in height than the Sierra, but equally beautiful, less forbidding, more companionable. The great Central Valley, four hundred and fifty miles long, is drained by two rivers, which meet in its center and break through the Coast Range, delivering their waters to the ocean through the Golden Gate. The Sacramento and San Joaquin Rivers receive many important tributaries from the east, fed by the melting snows of the Sierras, and flow through one of the most fertile regions of the world.
The Sierras may be divided into five different belts, of varying altitudes along the length of the range, beginning with the foothill region, which may be termed the chaparral region. This is succeeded by the yellow-pine belt, above which is the sugar-pine, or upper forest, belt, which is in turn succeeded by the sub-alpine, while the alpine dominates all.
The Coast Range is channeled on both sides by many beautiful wooded cañons, affording homes for some of our loveliest flowers. Mr. Purdy writes of it: This "is not a continuous range, but a broken mass of parallel ridges from forty to seventy miles wide, with many other chains transverse to the general trend of the range, and inclosing numerous valleys, large and small, of widely different altitudes. In the Coast Range there is no warm belt, but isolated warm spots. Climate here can only be ascertained by experience. The geological formation of the ranges and the character of soils constantly vary, and often widely at short intervals. Hence the flora of this region is particularly interesting. It is hardly probable there is a more captivating field for the botanist in the world."
In the north and the south the two great ranges meet in some of the noblest snow-peaks on the continent. Below their southern junction, to the eastward, lies an arid desert region, and above their northern junction extends a dry and elevated plateau to the northeast. Thus there arises a great diversity of natural condition. As all living organisms are greatly influenced by their environment, the flora naturally distributes itself along the lines of climatic variation. Thus we have alpine species on the snowy heights of the Sierras, and sub-alpine forms luxuriating in the meadows fed from their snows; inland species in the Central Valley, and following some distance up its eastern and western walls; the leathery and hardy forms of the wind-swept coast; the curious prickly races of arid regions; delicate lovers of the cool and shaded brook; dwellers in marshes and on lake borders; denizens of dry, rocky hill-slopes, exposed to the glare of the sun; and inhabiters of shaded woods. It may be said that the most characteristically Western plants of our flora are to be found in the Central Valley, in the lower belts of the Sierras, and in the valleys of the Coast Range, many of which extend beyond our borders, both northward and southward. Many of our alpine species are common to the East, and our maritime flora is of necessity somewhat cosmopolitan, containing many introduced species from various parts of the world.