Volume 23
Issue Date: 17 September 2013
Permalink: https://doi.org/10.58828/niss00072
Distinguishing characters of Hemigenia rigida, a conservation significant species confused with H. pritzelii (Lamiaceae: Westringieae)
GUERIN, G.R., Nuytsia 23: 467–474 (2013)
Hemigenia rigida Benth. (sect. Homalochilus Benth.) is a species of high conservation concern from Western Australia’s Avon Wheatbelt known from three collections made 150 and 20 years apart. Hemigenia pritzelii S.Moore (also sect. Homalochilus), a more frequent species from the Jarrah Forest of south-west Western Australia, has been frequently confused with H. rigida and both were previously confused with H. ramosissima Benth. The mis-application of the name H. rigida to the distinct and more abundant species H. pritzelii has hampered recognition of the potentially dire conservation status of H. rigida. To resolve longstanding confusion, distinguishing characters are provided for H. pritzelii and H. rigida along with morphological descriptions, distribution maps and information on ecology. An interim key to the species of sect. Homalochilus is presented for context and to aid identification.
Hibbertia sp. Mt Lesueur (M. Hislop 174) cannot be maintained as distinct from H. crassifolia
THIELE, K.R., Nuytsia 23: 475–476 (2013)
Clarification of the locality of William Blackall’s collection of the Threatened species Grevillea phanerophlebia (Proteaceae)
LEWINGTON, M.A., Nuytsia 23: 477 (2013)
Hibbertia sericosepala (Dilleniaceae), a new species from Western Australia
THIELE, K.R., Nuytsia 23: 479–482 (2013)
Hibbertia sericosepala K.R.Thiele is described as new. Morphologically similar to H. helianthemoides (Turcz.) F.Muell. and H. huegelii (Endl.) F.Muell., H. sericosepala is distinctive in its combination of sepal and leaf indumentum, floral bract shape and anther and carpel number. It is endemic to the south-west of Western Australia.
