A South American forest tree whose twin leaflets close together at sunset. The insects Pterochroya ocellata are called Leaf Insects (see 676), on account of the close resemblance of their wings to leaves. The genus Cassia is numerous in species which are widely dispersed in warm countries. Other species are represented in 332, 336, and 698 of this collection.
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33. Flowers of Cassia corymbosa in Minas Geraes, Brazil. appears in: