This section is from the book "British Wild Flowers In The Four Seasons", by Thomas Moore. Also available from Amazon: British Wild Flowers.
G. pilosa: shrub, without thorns; leaves obovate or lanceolate, hairy; flowers yellow, succeeded by narrow flattened hairy pods. - Sandy and gravelly heaths. Fl. May and September.
G. anglica: shrub, thorny; leaves ovate or lanceolate; flowers yellow, succeeded by short inflated pods. - Petty Whin. - Moist boggy heaths. Fl. May, June.
 
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