YELLOW OR YELLOWISH FLOWERS 
GROUP III 
Leaves opposite. Flowers with two-lipped corolla. 
Horse Balm {Collinsonia canadensis). Mint family. July 
to September. 
An upright branching perennial with stout, somewhat four- 
sided stem, two to five feet high. The small flowers, credited 
with a lemon odor, are borne in an open cluster of racemes at 
the top. The bright-yellow corolla is about a half -inch in length 
and has two lips, one lobed, the other generally fringed; two 
prominent stamens; style divided. The leaves are large, coarse, 
toothed, pointed, somewhat egg-shaped; the lower sometimes 
nearly a foot in length, with stalks. Rich woods. 
Golden Hedge Hyssop (Gratiola aurea). Figwort family. 
June to September. 
A delicate annual, four to twelve inches high. Flowers 
bright-yellow, one-half inch long, in axils; corolla cylindrical, 
somewhat two-lipped, two stamens with anthers, other two 
without, or wanting. Leaves oblong to linear, tending to clasp 
the stem. Sandy shores. Clammy Hedge Hyssop (Gratiola 
virginiana) is similar, but more branching and with toothed leaves. 
Damp ground. The Latin name was meant to show a healing 
grace. 
Cow Wheat (Melampyrum lineare) . Figwort family. July, 
August. 
A common, insignificant annual with slender branching stem, 
generally not over a foot high, in no way suggesting wheat. 
Flowers very small, whitish with pale yellow tip, solitary in the 
axils ; calyx with (four) pointed lobes, corolla of two hps. Leaves 
narrowly lance-shaped, pointed, short-stalked, sometimes with 
irregular sharp teeth near the base. Open woods. 
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