Daviesia divaricata

{{Short description|Species of legume}}

{{speciesbox

|name = Marno

|image =Daviesiadivaricata6247459969_cf3d5d74ac_o.jpg

|image_caption = Daviesia divaricata in the Kensington Bushland Reserve

|genus = Daviesia

|species = divaricata

|authority =Benth.

|synonyms_ref =

|synonyms = Daviesia pedunculata Benth.

|status=

|status_system=

|range_map=Daviesiadivaricata1.png

|range_map_caption=Occurrence data from AVH

}}

Daviesia divaricata, commonly known as marno, is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a low, spreading or erect and bushy shrub with phyllodes reduced to small, triangular scales, and orange and maroon flowers.

Description

Daviesia divaricata is a low, spreading or erect and bushy shrub that typically grows to a height of {{cvt|0.3–3|m}} and is mostly glabrous. Its phyllodes are reduced to keeled, triangular scales about {{cvt|1|mm}} long. The flowers are arranged in groups of up to six in leaf axils on a peduncle {{cvt|1–3|mm}} long, the rachis up to {{cvt|3|mm}}, each flower on a pedicel {{cvt|2–4.5|mm}} long with bracts about {{cvt|1|mm}} long. The sepals are {{cvt|4.0–4.5|mm}} long and have five ribs, the lobes varying with subspecies. The standard petal is egg-shaped, {{cvt|6.5–8.5|mm}} long, {{cvt|8–10|mm}} wide and deep orange with a maroon base and a deeply notched tip. The wings are {{cvt|5–7|mm}} long and maroon, and the keel is {{cvt|5–6|mm}} long and maroon. Flowering occurs from May to early November and the fruit is a triangular pod {{cvt|11–16|mm}} long.

Taxonomy

Daviesia divaricata was first formally described in 1837 by botanist George Bentham in Stephan Endlicher's Enumeratio plantarum quas in Novae Hollandiae ora austro-occidentali ad fluvium Cygnorum et in sinu Regis Georgii collegit Carolus Liber Baro de Hügel. The specific epithet (divaricata) means "widely spreading".

In 2017, Michael Crisp and Gregory T. Chandler described two subspecies in Phytotaxa, and the names are accepted by the Australian Plant Census:

  • Daviesia divaricata Benth. subsp. divaricata has the upper two sepals joined, forming a lip about {{cvt|0.25–0.5|mm}} long and the lower lobes triangular;
  • Daviesia divaricata subsp. lanulosa Crisp & G.Chandler has sepal lobes about {{cvt|0.75|mm}} long with woolly hairs inside.

Distribution and habitat

Marno grows on sand, over both limestone and laterite in near-coastal sandplains and dunes from near the Hutt River to near Busselton. Subspecies lanulosa replaces the autonym in the north and occurs from near Walkaway to the Murchison River.

Conservation status

Both subspecies of Daviesia divaricata are classified as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions.

References

{{Reflist|refs=

{{cite web|title=Daviesia divaricata|url= https://biodiversity.org.au/nsl/services/apc-format/display/82564|publisher=Australian Plant Census|access-date=14 December 2021}}

{{cite web|url=https://florabase.dpaw.wa.gov.au/browse/profile/3807|title=FloraBase: Daviesia divaricata|publisher=Western Australian Herbarium, Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions.|accessdate=30 May 2018}}

{{cite journal |last1=Crisp |first1=Michael D. |last2=Cayzer |first2=Lindy |last3=Chandler |first3=Gregory T. |last4=Cook |first4=Lyn G. |title=A monograph of Daviesia (Mirbelieae, Faboideae, Fabaceae) |journal=Phytotaxa |date=2017 |volume=300 |issue=1 |pages=50–52 |doi=10.11646/phytotaxa.300.1.1|doi-access=free }}

{{cite web|title=Daviesia divaricata|url= https://id.biodiversity.org.au/instance/apni/499756 |publisher=APNI|access-date=14 December 2021}}

{{cite book |last1=Bentham |first1=George |editor-last1=Endlicher |editor-first1=Stefan F.L. |editor-last2=Fenzl |editor-first2=Eduard |editor-last3=Bentham |editor-first3=George |editor-last4=Schott |editor-first4=Heinrich W. |title=Enumeratio plantarum quas in Novae Hollandiae ora austro-occidentali ad fluvium Cygnorum et in sinu Regis Georgii collegit Carolus Liber Baro de Hüge |date=1837 |page=31 |url=https://babel.hathitrust.org/cgi/pt?id=chi.64405481&view=1up&seq=41 |access-date=19 October 2021}}

{{cite book |last1=Stearn |first1=William T. |title=Botanical Latin |date=2004 |publisher=Timber Press |location=Oregon |isbn=9780881926279 |page=401}}

{{cite web|title=Daviesia divaricata subsp. divaricata|url= https://biodiversity.org.au/nsl/services/apc-format/display/8899189|publisher=Australian Plant Census|access-date=14 December 2021}}

{{FloraBase|name=Daviesia divaricata subsp. divaricata|id=18560}}

{{cite web|title=Daviesia divaricata subsp. lanulosa|url= https://biodiversity.org.au/nsl/services/apc-format/display/8898226|publisher=Australian Plant Census|access-date=14 December 2021}}

{{FloraBase|name=Daviesia divaricata subsp. lanulosa|id=18561}}

}}

{{Taxonbar|from1=Q15532301|from2=Q100451097|from3=Q42740501}}

divaricata

Category:Flora of Western Australia

Category:Taxa named by George Bentham

Category:Plants described in 1837