Wild Flowers of Pittsburgh

Leguminosae

Redbud (Cercis canadensis)

A common tree in the forests around Pittsburgh, and also a favorite ornamental in urban and suburban yards. These trees were blooming in late April in open woods in Bird Park, Mount Lebanon.

Gray describes the genus and the species:

CÉRCIS L. REDBUD. JUDAS TREE. Calyx 6 toothed. Corolla imperfectly papilionaceous; standard smaller than tbe wings and inclosed by them in the bud; the keel petals larger and not united. Stamens 10, distinct, declined. Pod oblong, flat, many-seeded, the upper suture with a winged margin. Embryo straight.—Trees, with rounded heart-shaped simple leaves, caducous stipules, and red-purple flowers in umbel-like clusters along the branches of the last or preceding years, appearing before the leaves, acid to the taste. (The ancient name of the oriental Judas Tree.)

C. canadensis L (REDBUD.) Leaves pointed; pods nearly sessile above the calyx.—Rich soil, N. Y. and N. J. to Fla., w. to s. Ont., e. Neb., and Tex.—A small ornamental tree, often cultivated.


Crown Vetch (Securigera varia)

Crown Vetch is often planted to control erosion on hillsides; it also escapes freely and makes a nuisance of itself. But the bicolored flowers are pretty.

Gray describes the genus (he places it in Coronilla) and the species:

CORONILLA L. Calyx 5-toothed. Standard orbicular; keel incurved. Stamens diadelphous. 9 and 1. Pod terete or 4-angled, jointed; the joints eubrylindric. — Glabrous herbs or shrubs, with pinnate leaves, and the flowers in umbels terminating axillary peduncles. (Diminutive of corona, a crown, alluding to the inflorescence.)

C. vària L. A perennial herb with ascending stems; leaves sessile; leaf lets 15-25, oblong; flowers rose-color; pods coriaceous, 3-7 -jointed, the 4-angled joints 6-8 mm. long. — Roadsides and waste places, N. E. to N. J. (Nat. from Eu.)


Redbud (Cercis canadensis)

KONICA MINOLTA DIGITAL CAMERA

A common tree in the forests around Pittsburgh, and also a favorite ornamental in urban and suburban yards. This tree was blooming in early May (later than usual this year) on a wooded hillside in Schenley Park.

Gray describes the genus and the species:

CÉRCIS L. REDBUD. JUDAS TREE. Calyx 6 toothed. Corolla imperfectly papilionaceous; standard smaller than tbe wings and inclosed by them in the bud; the keel petals larger and not united. Stamens 10, distinct, declined. Pod oblong, flat, many-seeded, the upper suture with a winged margin. Embryo straight.—Trees, with rounded heart-shaped simple leaves, caducous stipules, and red-purple flowers in umbel-like clusters along the branches of the last or preceding years, appearing before the leaves, acid to the taste. (The ancient name of the oriental Judas Tree.)

C. canadensis L (REDBUD.) Leaves pointed; pods nearly sessile above the calyx.—Rich soil, N. Y. and N. J. to Fla., w. to s. Ont., e. Neb., and Tex.—A small ornamental tree, often cultivated.


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