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Nuytsia
The journal of the Western Australian Herbarium

Spartothamnella canescens (Lamiaceae: Chloantheae), a new species from Western and Central Australia, with notes on the status of S. sp. Helena & Aurora Range
THIELE, K.R. AND SHEPHERD, K.A.

Morphological assessment of the informally named Spartothamnella sp. Helena & Aurora Range (P.G. Armstrong 155-109) shows it is not distinct from Western Australian populations of S. puberula (F.Muell.) Maiden & Betche. However, examination of S. puberula s. lat. shows that Western and Central Australian populations are morphologically distinct from typical populations in eastern Australia. Accordingly, S. canescens K.R.Thiele & K.A.Sheph. is newly described to accommodate these atypical populations. A revised description of S. puberula and a modified key for the genus are also provided.