Plants of South Eastern New South Wales
Prostanthera rotundifolia
Round-leaved mint-bush, Round-leaf Mint-bush
Lamiaceae
Forest and woodland, often in rocky areas. Kosciuszko National Park. Tablelands and ranges south of the Hume Highway. Sometimes elsewhere.
Shrub to 3 m high. Branches moderately covered with short curled hairs and almost stalkless glands. The whole plant aromatic. Leaves opposite each other, 0.3–2 cm long, 3–15 mm wide; mid-green, rarely almost silvery, hairless (the midrib often sparsely to moderately hairy), moderately to densely glandular, margins entire or irregularly lobed or scalloped, tips rounded. Flowers purple-mauve to purple, sometimes pinkish, with a bell-shaped tube, 10–15 mm long, 2-lipped, 5-lobed. Calyx 2-lobed. Flowers apparently single at the base of paired leaves, or forming short leafless clusters. Flowering: September–November.
PlantNET description: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Prostanthera~rotundifolia (accessed 3 February, 2021)
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