Eremophila hurteri A.L.Curtis & K.R.Thiele, 2022

Curtis, Amy L., Grierson, Pauline F., Batley, Jacqueline, Naaykens, Jeremy, Fowler, Rachael M., Severn-Ellis, Anita & Thiele, Kevin R., 2022, Resolution of the Eremophila tietkensii (Scrophulariaceae) species complex based on congruence between morphological and molecular pattern analyses, Australian Systematic Botany 35 (1), pp. 1-18 : 16

publication ID

https://doi.org/ 10.1071/SB21005

DOI

https://doi.org/10.5281/zenodo.10949494

persistent identifier

https://treatment.plazi.org/id/03C287B7-C339-AC12-FF4C-FF283A11FB27

treatment provided by

Felipe

scientific name

Eremophila hurteri A.L.Curtis & K.R.Thiele
status

sp. nov.

Eremophila hurteri A.L.Curtis & K.R.Thiele View in CoL sp. nov.

Type: base of Calvert Range (campsite), Calvert Range , WA, 7 August 2000, A. A. Burbidge 738 (holo: PERTH 07512821 !).

Eremophila sp. Calvert Range ( A. A. Burbidge 738) Western Australian Herbarium: L. J. Biggs & C. M. Parker, Nuytsia View in CoL 23: 504 (2013).

Intricate flat-topped shrubs 1–1.5 m tall, aromatic. Young stems with indumentum of short, woolly, usually yellowish, sometimes grey, hairs, sometimes appearing sericeous, obscurely tuberculate beneath the indumentum; older stems grey to dark brown, scarcely fissured, often distinctly tuberculate, at first with prominently raised and knob-like persistent leaf bases. Leaves scattered, silvery, petiolate; petioles (7–)8–10(–11) mm long, decurrent; lamina lanceolate, (45–)50–69.5(–84.5) × (9–)9.5–12.5(–14) mm, finely strumose; indumentum dense, very short, white to grey, woolly, often matted-resinous, comprising simple, uniseriate hairs, the terminal cell much longer than the others and attenuate; margins entire; apex attenuate. Flowers 1 or 2 per axil, pedicellate; pedicels (4.5–)9–13(–15) mm long, straight to curved, with indumentum as for stems. Sepals 5, imbricate, subequal, elliptic to oblanceolate, broadly acute to obtuse, sometimes mucronulate, 7–9 × 2–3.5 mm in flower, yellow in bud, turning white or pink or mauve at anthesis, densely short-tomentose with ±silky hairs, enlarging after flowering and then glabrescent and with prominent veins. Corolla 20–28 mm long, white to pale purple or mauve; outer surface of lobes and tube with scattered eglandular hairs particularly near the margins, often almost glabrous; mid-inner tube lanate with eglandular hairs. Stamens 4, included; filaments with woolly eglandular hairs towards base, glabrous above; anthers glabrous. Ovary densely sericeous with yellow, simple, eglandular hairs; style with sparse, long spreading, eglandular hairs for most of its length. Mature fruits not seen.

Distribution and habitat

Endemic in the Little Sandy Desert IBRA bioregion ( Thackway and Cresswell 1995). Current records indicate a geographic range of ~ 220 km from north to south either side of Lake Disappointment (Western Australian Herbarium’s FloraBase, see https://florabase.dpaw.wa.gov.au/). Occurs on sandstone ranges, rocky scree slopes and stony plains at the bases of low ranges.

Phenology

Flowers in late winter to at least mid-spring, with fruits maturing from early spring onward.

Conservation status

Eremophila hurteri is currently known from six populations. It is not currently listed under the Conservation Codes for Western Australian flora (Western Australian Herbarium’s FloraBase, see https://florabase.dpaw.wa.gov.au/).

Etymology

Named in honour of Johan Hurter, ecologist and botanist at EcoRex Environmental Consulting and previously the Rio Tinto Identification Botanist at the Western Australian Herbarium. Johan first suggested that there may be multiple species within Eremophila tietkensii , and segregated E. hurteri (as E. sp. Calvert Range), E. naaykensii (as E. sp. Hamersley Range) and E. sp. Rudall River.

Notes

Eremophila sp. Calvert Range was previously included in E. tietkensii , from which it can be distinguished by an indumentum of yellow, sericeous, simple, eglandular hairs on the ovary (simple eglandular and glandular hairs in E. tietkensii ) and by the strumose leaf surfaces (not strumose in E. tietkensii ). It almost certainly belongs in the clade of Eremophila that contains sections Eremaeae, Pulchrisepalae, Eremophila and Eriocalyx ( Fowler 2018) . However, phylogenetic relationships within this clade are poorly resolved with low support, and the precise phylogenetic relationships of E. hurteri are currently unknown.

Other specimens examined

WESTERN AUSTRALIA. At base of Durba Hills, Wiluna , A. A. Burbidge 733 ( PERTH 07765886 About PERTH ); Rudall River Region, East Pilbara , R. P Hart 571 ( PERTH 01226991 About PERTH ); 4.5 km Sth Parngurr, Little Sandy Desert, P. K. Latz 17825 ( PERTH 08305382 About PERTH ); 28 Aug. 2004, W. P. Muir WPM 1046 ( PERTH 08609942 About PERTH ); 40 km S of Rudall River, ∼ 500 km S of Broome, East Pilbara , P. G. Wilson 10540 ( PERTH 03878570 About PERTH ) .

A

Harvard University - Arnold Arboretum

L

Nationaal Herbarium Nederland, Leiden University branch

J

University of the Witwatersrand

C

University of Copenhagen

M

Botanische Staatssammlung München

E

Royal Botanic Garden Edinburgh

R

Departamento de Geologia, Universidad de Chile

P

Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants

K

Royal Botanic Gardens

W

Naturhistorisches Museum Wien

S

Department of Botany, Swedish Museum of Natural History

G

Conservatoire et Jardin botaniques de la Ville de Genève

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Lamiales

Family

Scrophulariaceae

Genus

Eremophila

Loc

Eremophila hurteri A.L.Curtis & K.R.Thiele

Curtis, Amy L., Grierson, Pauline F., Batley, Jacqueline, Naaykens, Jeremy, Fowler, Rachael M., Severn-Ellis, Anita & Thiele, Kevin R. 2022
2022
Loc

Nuytsia

L. J. Biggs & C. M. Parker 2013: 504
2013
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