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The word Althæa could not be parsed. Trying a normal dictionary lookup:
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† 1. althaea, ae, f., = ἀλθαία, wild mallows, marsh-mallows, = hibiscum; Althaea officinalis, Linn.; Plin. 20, 21, 84, § 222; Pall. Oct. 14, 11; App. Herb. 38.
2. Althaea, ae, f., = Ἀλθαία, daughter of Thestius, wife of Œneus, king of Calydon, and mother of Meleager, whom, in revenge for the death of her brothers slain by him in the Calydonian hunt, she killed, by burning the brand, on the preservation of which his life depended, Ov. M. 8, 446; 8, 511; 8, 531; cf. Hyg. Fab. 171.