There are a good many kinds of Philadelphus, natives of North America, Asia, and Europe; shrubs, with large, white or cream-colored flowers; the calyx top-shaped, with four or five lobes; the petals four or five; the stamens twenty to forty, inserted on a disk; the ovary inferior, with three to five styles; the capsule top-shaped, containing many oblong seeds. These plants were named in honor of King Ptolemy Philadelphus. They are often called Mock-Orange, because the flowers often resemble orange-blossoms. The commonest name, Syringa, is confusing, because that is the generic name of the Lilac.

Fendlera rupicola.

Syringa
Philadélphus Califórnicus
White
Summer
Cal., Oreg., Wash.

In June and July, in the high Sierras, up to an altitude of four thousand feet, this lovely shrub forms fragrant thickets of bloom. It looks very much like the familiar garden Syringa and the smell is just as delicious. The bush is from four to twelve feet high, with smooth, pale, woody stems, dark-green leaves, sometimes slightly toothed, very smooth and shiny, and pretty flowers, in clusters at the ends of the branches. They are each about an inch across, with four or five, cream-white petals, rolled in the bud, and a golden center, composed of numerous, bright-yellow stamens.

Small Syringa
Philadélphus microphýllus
White
Summer
Ariz., Cal., New Mex.

A small shrub, not nearly so handsome as the last, from two to three feet high, with slender, pale-gray, woody stems, branching very abruptly. The small leaves are smooth and very bright green on the upper side, but the under side is very pale and covered with close white down. The flowers are much smaller than the garden Syringa, with white petals and numerous yellow stamens, the calyx reddish outside and downy within, and have a delicious smell, like lemon-blossoms. This pretty little shrub may be found growing in small shady canyons, in northern Arizona and elsewhere in the Southwest.