This section is from the book "British Wild Flowers In The Four Seasons", by Thomas Moore. Also available from Amazon: British Wild Flowers.
It. Crista-galli: annual; stems erect, glabrous or slightly hairy, 1/2-1 foot high, simple or slightly branched; leaves opposite, lanceolate, and coarsely-toothed, the floral ones broader, shorter, and more cut at the base; flowers in a loose leafy spike, yellow, often with a purple spot on the upper, or on both lips. - Meadows and pastures. Fl. June.
 
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