Current Issue: Volume 34
Updates to Western Australia’s vascular plant census for 2022
PERCY-BOWER, J.M. AND PARKER, C.M., Nuytsia 34: 1–20 (2023)
Update to the taxonomy of Hypocalymma sect. Hypocalymma (Myrtaceae: Chamelaucieae), including hybrids and new species
KEIGHERY, G.J., RYE, B.L. AND TAUSS, C., Nuytsia 34: 21–60 (2023)
In updating the taxonomy of Hypocalymma (Endl.) Endl. sect. Hypocalymma (Myrtaceae: Chamelaucieae), the section is described, a key is provided to the species and hybrids, full descriptions given for 11 species (three of them new, one reinstated) and three hybrids (one newly named). Taxa needing further study are noted. Five species and two of the hybrids described here have conservation priority. Two new species are described from the H. xanthopetalum F.Muell. complex as H. lateriticola Keighery & Rye and H. quadrangulare Rye & Keighery. The circumscription of H. angustifolium (Endl.) Schauer is reduced with the reinstatement of H. suave Lindl. and the description of the new species H. balbakiae Tauss & Rye. A northern variant of H. balbakiae (previously known as H. angustifolium subsp. Hutt River) is considered to be insufficiently distinct to recognise formally as a subspecies. Evidence is presented that one previously named and two phrase-named taxa are hybrids. Two of the hybrids are known from more than one location and have been recorded in hybrid swarms: one between H. angustifolium and H. tetrapterum Turcz. is named as H. × proliferum Keighery & Rye, while the other, H. × linifolium Turcz., has the parent species H. angustifolium and H. lateriticola. The third hybrid is H. tenuatum × H. xanthopetalum. The description of H. jessicae Strid & Keighery is broadened to include a new variant that has mostly higher ovule and stamen numbers. Amendments are made to the stamen and ovule numbers recorded for H. sylvestre Strid & Keighery; this species has up to 200 stamens, which is the highest stamen number known for the tribe Chamelaucieae DC. A new fruit type that is indehiscent and somewhat winged, is recorded for the genus; it occurs only in H. serrulatum Strid & Keighery, which also has an unusual breeding system.
Pterostylis segregata (Orchidaceae), a rare new species from south-west Western Australia
BROCKMAN, G. AND FRENCH, C.J., Nuytsia 34: 61–64 (2023)
Four new species of Amanita sect. Roanokenses (Basidiomycota) from Western Australia
DAVISON, E.M., GIUSTINIANO, D., BARRETT, M.D. AND SYME, K., Nuytsia 34: 65–92 (2023)
Four species of Amanita Pers. are documented from Western Australia. Amanita brunneola E.M.Davison & Giustiniano is described from the Perth region. It is distinguished by its pale brown pileus, white universal veil, globose basal bulb, amyloid, cylindric spores and presence of clamp connections. Amanita cretaceaverruca E.M.Davison & Giustiniano is described from the Perth region and the southern jarrah forest. It is distinguished by its brown pileus, with a thick white warty universal veil, globose or ovoid basal bulb, amyloid, elongate spores and absence of clamp connections. Amanita mallee E.M.Davison, Giustiniano & M.D.Barrett is described from the Shire of Coolgardie. It is distinguished by its white pileus and universal veil, tapered basal bulb, amyloid, cylindric spores and abundant clamp connections. Amanita validiuscula E.M.Davison, Giustiniano & K.Syme is described from the wheatbelt and Yalgoo area. It is distinguished by its white pileus and universal veil, ivory lamellae, fusiform or tapered basal bulb, amyloid, ellipsoid spores and abundant clamp connections. Molecular analysis shows all these species are members of sect. Roanokenses. Amanita brunneola, A. cretaceaverruca and A. mallee form a clade with other species from Australia and New Zealand, which may indicate Gondwanan origin.
Lectotypification of Astartea arbuscula and A. fascicularis (Myrtaceae)
WEGE, J.A. AND RYE, B.L., Nuytsia 34: 93–94 (2023)
Acacia armigera (Fabaceae), a new, geographically restricted wattle from the Coolgardie bioregion of Western Australia
THIELE, K.R., DAVIS, R.W. AND COCKERTON, G.T.B., Nuytsia 34: 95–98 (2023)
A new, geographically restricted species of Acrotriche (Ericaceae: Epacridoideae: Styphelieae) from the central south coast of Western Australia and an updated key to species
HISLOP, M., WALKERDEN, K. AND WATERS, J., Nuytsia 34: 99–103 (2023)
George Maxwell's collecting locality – Eyre’s Relief
BROOKER, L., Nuytsia 34: 105–109 (2023)
Amanita marinae (Basidiomycota), a new species from the mid-west region of Western Australia
DAVISON, E.M. AND GIUSTINIANO, D., Nuytsia 34: 111–123 (2023)
Amanita marinae E.M.Davison & Giustiniano from sect. Validae (Fr.) Quél. is described from Kwongan vegetation in the Lesueur Sandplain of the mid-west region of Western Australia. It is distinguished by a white to ivory pileus; white to pale vinaceous buff universal veil; a white, membranous, flaring partial veil; amyloid elongate spores; and absence of clamp connections. Its affinities with other members of sect. Validae are unclear as phylogenetic analyses of nuLSU and tef-1 sequences show affinities with northern hemisphere species, whilst comparison of ITS sequences shows affinities with an undescribed species from New Zealand. Variability in the ITS region between cloned haplotypes of A. marinae was less than 1% — comparable with haplotype divergence previously observed for other sect. Validae.
Taxonomic resolution of infraspecific taxa in Lambertia orbifolia (Proteaceae) using molecular and morphological evidence
WEGE, J.A., MONKS, L.T., WEBB, A.D., BINKS, R.M. AND COATES, D.J., Nuytsia 34: 125–137 (2023)
The taxonomy of three informally-named, conservation-listed subspecies of Lambertia orbifolia C.A.Gardner was assessed using genotypic data generated from microsatellites in concert with morphological information. They were found to warrant formal taxonomic recognition and individualised conservation management. Lambertia orbifolia subsp. vespera A.D.Webb, L.Monks & Wege, an Endangered taxon from the Scott River Plains, and L. orbifolia subsp. pecuniosa A.D.Webb, L.Monks & Wege, a recently discovered and apparently rare taxon from south-west of Bowelling, are newly described and comparative data are provided for L. orbifolia subsp. orbifolia, a Critically Endangered taxon found near Narrikup. A revised description of L. orbifolia is also provided.
The taxonomy of the Styphelia corynocarpa subgroup (Ericaceae: Epacridoideae: Styphelieae)
HISLOP, M., Nuytsia 34: 139–155 (2023)
A small subgroup within the heterogeneous Styphelia Sm. Group X is recognised based on morphological and molecular data. A morphological synopsis of, and key to, the subgroup are provided, and all four member species are described and illustrated. Three of the four species are described as new, S. anomala Hislop, S. cylindrica Hislop and S. planiconvexa Hislop, while S. corynocarpa (Sond.) F.Muell. is given an updated description. Styphelia anomala has Western Australian conservation listing as Priority Two.
Ferdinand Mueller in Western Australia in 1877, with notes on his later contributions to the Western Australian flora
DOWE, J.L., Nuytsia 34: 157–178 (2023)
Baron Ferdinand von Mueller, Australia’s most productive botanist of the mid–late nineteenth century, was especially enamoured with the flora of Western Australia, and wrote about its ‘marvellous exuberance’, ‘typic singularity’ and ‘endemism’. He botanised in Western Australia on three occasions: in 1856 in the Sturt Creek area during Augustus Gregory’s North Australian Exploring Expedition; in 1867 in the Porongurup Range and Stirling Range and around Albany; and in 1877 with excursions from Champion Bay to Shark Bay and from Perth to Albany. Although he considered that most of Australia’s plant taxa had been described by the late 1870s, he remained attentive for novelties, especially those that were rare or from remote, under-botanised areas, especially in Western Australia. Many of Mueller’s later publications consolidated aspects of nomenclature, systematics, biogeography, economics, horticulture and utilisation of the flora of Western Australia.
Echinostelium australiense (Myxomycetes: Echinosteliaceae), a new species of slime mould described from Western Australia
KNIGHT, K.J., STEPHENSON, S.L. AND NOVOZHILOV, Y.K., Nuytsia 34: 179–186 (2023)
A new and unusual species of Echinostelium de Bary appearing on samples of bark collected in Western Australia and placed in moist chamber cultures is described and illustrated. This new species is clearly distinct from all other species of Echinostelium as it differs in a number of morphological and colour characters. The dark colouration of the sporotheca, stalk and spores with distinct patches of closely arranged warts arranged in a loosely circular pattern, and a large bi-coloured petaloid collar are unusual for the genus.
Volvopluteus earlei and Volvariella taylorii: new fungi for Western Australia (Basidiomycota, Agaricales, Pluteaceae)
BOUGHER, N.L. AND BARRETT, M.D., Nuytsia 34: 187–201 (2023)
Re-examination of vouchered specimens of pink-spored, volvate, agaricoid fungi held at the Western Australian Herbarium (PERTH) has revealed the first recorded occurrences in Western Australia of Volvopluteus earlei (Murrill) Vizzini, Contu & Justo and Volvariella taylorii (Berk. & Broome) Singer, and affirmed the regional prevalence of Volvopluteus gloiocephalus (DC.) Vizzini, Contu & Justo. The identities of the two Volvopluteus Vizzini, Contu & Justo taxa were confirmed with molecular data relative to extra-Australian samples validated in previous studies. Volvopluteus earlei had not been previously reported from Australia. Evidently Volvopluteus earlei and Volvariella taylorii are less common in Australia than the larger and more often encountered Common Rosegill, Volvopluteus gloiocephalus.