Synaphea platyphylla

Short description: Species of Australian shrub

Synaphea platyphylla

Conservation status

Priority Three — Poorly Known Taxa (DEC)

Scientific classification
Kingdom:  | Plantae
Clade:  | Tracheophytes
Clade:  | Angiosperms
Clade:  | Eudicots
Order:  | Proteales
Family:  | Proteaceae
Genus:  | Synaphea
Species:  |

S. platyphylla

Binomial name
Synaphea platyphylla

A.S.George[1]

Synaphea platyphylla is a species of flowering plant in the family Proteaceae and is endemic to the south west of Western Australia. It is a tufted shrub with many stems, simple or lobed leaves and spikes of yellow flowers.

## Contents

* 1 Description
* 2 Taxonomy
* 3 Distribution and habitat
* 4 Conservation status
* 5 References

## Description

Synaphea platyphylla is a tufted shrub with many stems up to 120 mm (4.7 in) long. Its leaves are simple, egg-shaped with the narrower end towards the base, 150–220 mm (5.9–8.7 in) long and 20 mm (0.79 in) wide, or sometimes with two or three lobes, then up to 60 mm (2.4 in) wide, narrowing to a petiole 50–80 mm (2.0–3.1 in) long. The flowers are yellow and moderately openly spaced on a spike up to 100 mm (3.9 in) long on a glabrous peduncle up to 300 mm (12 in) long. The bracts are broad, 1.5 mm (0.059 in) long and mostly glabrous. The perianth is ascending, opening widely and glabrous, the upper tepal 5.0–5.5 mm (0.20–0.22 in) long and 2.0–2.2 mm (0.079–0.087 in) wide, the lower tepal 3.2 mm (0.13 in) long. The stigma is more or less square, about 0.8–0.9 mm (0.031–0.035 in) long and wide, and the ovary is covered with soft hairs. Flowering occurs in September and October and the fruit is oval with a beak on the end, 4.5–5.5 mm (0.18–0.22 in) long and hairy.[2][3]

## Taxonomy

Synaphea platyphylla was first formally described in 1995 by Alex George in the Flora of Australia from specimens collected near Dongolocking Nature Reserve in 1994.[2][4] The specific epithet (platyphylla) means 'flat-, broad- or wide-leaved'.[5]

## Distribution and habitat

This species of synaphea is found in the Narrogin area and near Ravensthorpe in the Avon Wheatbelt and Esperance Plains bioregions of southwestern, Western Australia where it grows in sandy loam in tall shrubland.[2][3]

## Conservation status

Synaphea pinnata is listed as "Priority Three" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[3] meaning that it is poorly known and known from only a few locations but is not under imminent threat.[6]

## References

1. ↑ "Synaphea platyphylla". Australian Plant Census. https://biodiversity.org.au/nsl/services/apc-format/display/159773.
2. ↑ 2.0 2.1 2.2 George, Alex S.. "Synaphea platyphylla". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra.. https://profiles.ala.org.au/opus/foa/profile/Synaphea pinnata.
3. ↑ 3.0 3.1 3.2 "Synaphea platyphylla". FloraBase. Western Australian Government Department of Parks and Wildlife. https://florabase.dpaw.wa.gov.au/browse/profile/17291.
4. ↑ "Synaphea platyphylla". Australian Plant Name Index. https://biodiversity.org.au/nsl/services/rest/instance/apni/558235.
5. ↑ George, Alex S.; Sharr, Francis A. (2023). Western Australian Plant Names and Their Meanings - A Glossary (fifth ed.). Kardinya: Four Gables Press. pp. 288–289. ISBN 9780645629538.
6. ↑ "Conservation codes for Western Australian Flora and Fauna". Government of Western Australia Biodiversity, Conservation and Attractions. https://www.epa.wa.gov.au/sites/default/files/Referral_Documentation/DWERDT480152 App 6 - 2020 Western Australian and Commonwealth of Australia Conservation Codes(2).pdf. Retrieved 22 March 2026.

Wikidata ☰ Q18075517 entry

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