Grevillea trichantha, a third species with hairy flowers in the Triloba Group (Proteaceae: Grevilleoideae: Hakeinae) from the Marchagee Track, south-west Western Australia

Abstract

Grevillea trichantha Olde, a rare species in the Triloba Group is described. It appears to be most closely related to another rare species, G. metamorpha Makinson and is more common, though its localised distribution still requires a high conservation priority. Grevillea trichantha is the third species in the Triloba Group in which the perianth is consistently, but not always uniformly, hairy. A short key differentiating the three species is provided.

Missing in the Shark Bay area, Grevillea speckiana Olde, a new species and the northern-most member of the Triloba Group (Proteaceae: Grevilleoideae: Hakeinae)

“…A low percentage of bi-or divaricately tripartite leaves may also be present on any selected specimen and it is entirely possible that simple leaves will not always predominate a single collection. This paper is the fifth in a series aimed at revising the Triloba Group (Olde 2020;Olde 2021aOlde , 2021bOlde & Marriott 2021).…”