Botanical name: Calacanthus grandiflorus Family: Acanthaceae (Acanthus family)
Synonyms: Lepidagathis grandiflora, Calacanthus dalzellianus T.Anderson ex Benth. [Illeg.]
Large Flowered Calacanthus is an erect shrub, 1-2 m tall.Stems are swollen at nodes. Oppositely arranged, stalkless, elliptic leaves are 10-20 cm long. Bluish purple flowers occur in upright spikes at the end of branches or in upper leaf axils, 3-15 cm long. Flowers are 2-3 cm, 2-lipped. Upper lip is narrow and 2-lobed. Lower lip is broad, convex, 3-lobed, with 2 lines of bright yellow hairs. There are 4 stamens in unequal pairs. Flowering: October.
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The flower labeled Large Flowered Calacanthus is ...