Daviesia

Location & distribution maps

Common name:         Bitter Pea

Conservation status: ...

Etymology:   

• The genus is named in honour of Hugh Davies, a Welsh botanist

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Flowers

• The flowers are usually arranged in leaf axils, either singly or in clusters or racemes with bracts sometimes present on the peduncles, pedicels or flowering stems

• The sepals are joined at the base to form a bell-shaped tube with five teeth, the two upper teeth usually wider and the petals are usually yellowish with reddish markings

• The standard petal are more or less round with a notch at the top and often shorter than the wings and keel

Fruit:                            

• The fruit is a more or less flattened pod containing one or two seeds, each with an aril on the end

Leaves:         

Stem & branches: 

Roots:         

• The roots of many Daviesia species have a mode of secondary thickening in which successive arch-like cambia arise outside the roots of the previous season, creating rope-like structures on the roots

• Like other genera in their family, Daviesia species have nitrogen-fixing bacteria contained in root nodules

Habit:        

• Plants in the genus Daviesia are shrubs or small trees with their leaves modified as phyllodes

• They are often sharply-pointed, or have leaves reduced to scales with the stems modified as cladodes

Habitat:   

Distribution:                  

•   Species of Daviesia are found in all states and mainland territories of Australia, but the majority occur in Western Australia  

Additional notes:  

• Taxonomy

  • The genus Daviesia was first formally described in 1798 by James Edward Smith in Transactions of the Linnean Society of London

• Species list

  • The following is a list of Daviesia species accepted by the Australian Plant Census as of October 2021:

    • Daviesia abnormis F.Muell. (W.A.)

    • Daviesia acicularis Sm. – sharp bitter-pea (N.S.W., Qld., A.C.T.)

    • Daviesia alata Sm. (N.S.W.)

    • Daviesia alternifolia Endl. (W.A.)

    • Daviesia anceps Turcz. (W.A.)

    • Daviesia angulata Benth. (W.A.)

    • Daviesia aphylla F.Muell. ex Benth. (W.A., S.A.)

    • Daviesia apiculata Crisp (W.A.)

    • Daviesia arborea W.Hill – golden pea, bitterleaf pea (Qld., N.S.W.)

    • Daviesia arenaria Crisp – sandhill bitter-pea (S.A., N.S.W., Vic.)

    • Daviesia argillacea Crisp (W.A.)

    • Daviesia arthropoda F.Muell. (W.A., N.T., S.A., Qld.)

    • Daviesia articulata Crisp (W.A.)

    • Daviesia asperula Crisp (S.A.)

    • Daviesia asperula Crisp subsp. asperula

    • Daviesia asperula subsp. obliqua Crisp

    • Daviesia audax Crisp (W.A.)

    • Daviesia benthamii Meisn. (W.A.)

    • Daviesia brachyphylla Meisn. (W.A.

    • Daviesia brevifolia Lindl. – leafless bitter-pea (S.A., Vic.)

    • Daviesia bursarioides Crisp – Three Springs daviesia (W.A.)

    • Daviesia buxifolia Benth. – box-leaf bitter-pea (N.S.W., Vic.)

    • Daviesia campephylla Crisp (W.A.)

    • Daviesia cardiophylla F.Muell. (W.A.)

    • Daviesia chapmanii Crisp (W.A.)

    • Daviesia cordata Sm. – bookleaf (W.A.)

    • Daviesia corymbosa Sm. – narrow leaf bitter-pea (N.S.W.)

    • Daviesia costata Cheel (W.A.)

    • Daviesia crassa Crisp (W.A.)

    • Daviesia crenulata Turcz. (W.A.)

    • Daviesia croniniana F.Muell. (W.A.)

    • Daviesia cunderdin Crisp & G.Chandler – Cunderdin daviesia (W.A.)

    • Daviesia daphnoides Meisn. (W.A.)

    • Daviesia debilior Crisp (W.A.)

    • Daviesia debilior Crisp subsp. debilior (W.A.)

    • Daviesia debilior subsp. sinuans Crisp (W.A.)

    • Daviesia decipiens (E.Pritz.) Crisp (W.A.)

    • Daviesia decurrens Meisn. – prickly bitter-pea (W.A.)

    • Daviesia decurrens Meisn. subsp. decurrens (W.A.)

    • Daviesia decurrens subsp. hamata (Crisp) Crisp & G.Chandler (W.A.)

    • Daviesia devito Crisp & L.G.Cook (S.A., N.S.W., Vic.)

    • Daviesia dielsii E.Pritz. – Diels' daviesia (W.A.)

    • Daviesia dilatata Crisp (W.A.)

    • Daviesia discolor Pedley (Qld.)

    • Daviesia divaricata Benth. – marno (W.A.)

    • Daviesia divaricata Benth. subsp. divaricata (W.A.)

    • Daviesia divaricata subsp. lanulosa Crisp & G.Chandler (W.A.)

    • Daviesia elliptica Crisp – wild hops (Qld., N.S.W.)

    • Daviesia elliptica Crisp × Daviesia mimosoides R.Br. subsp. mimosoides (Qld.)

    • Daviesia elongata Benth. (W.A.)

    • Daviesia elongata Benth. subsp. elongata (W.A.)

    • Daviesia emarginata (Miq.) Crisp (W.A.)

    • Daviesia epiphyllum Meisn. – staghorn bush (W.A.)

    • Daviesia eremaea Crisp (W.A., N.T.)

    • Daviesia euphorbioides Benth. (W.A.) – Wongan cactus

    • Daviesia eurylobos Crisp & G.Chandler (W.A.)

    • Daviesia filipes Benth. (Qld.)

    • Daviesia filipes Benth. subsp. filipes (Qld.)

    • Daviesia filipes subsp. terminalis Crisp & G.Chandler (Qld.)

    • Daviesia flava Pedley (Qld.)

    • Daviesia flexuosa Benth. (W.A.)

    • Daviesia genistifolia A.Cunn. ex Benth. – broom bitter-pea (S.A., Qld., N.S.W., A.C.T., Vic.)

    • Daviesia glossosema Crisp – maroon-flowered daviesia (W.A.)

    • Daviesia gracilis Crisp (W.A.)

    • Daviesia grahamii Ewart & Jean White (W.A.)

    • Daviesia grossa Crisp (W.A.)

    • Daviesia hakeoides Meisn. (W.A.)

    • Daviesia hakeoides Meisn. subsp. hakeoides

    • Daviseia hakeoides subsp. subnuda Crisp

    • Daviesia horrida Preiss ex Meisn. – prickly bitter-pea (W.A.)

    • Daviesia implexa (Crisp) Crisp (W.A.)

    • Daviesia incrassata Sm. (W.A.)

    • Daviesia incrassata Sm. subsp. incrassata

    • Daviesia incrassata subsp. reversifolia (F.Muell.) Crisp

    • Daviesia incrassata subsp. teres Crisp

    • Daviesia inflata Crisp (W.A.)

    • Daviesia intricata Crisp (W.A.)

    • Daviesia intricata Crisp subsp. intricata

    • Daviesia intricata subsp. xiphophylla Crisp

    • Daviesia laevis Crisp (Vic.)

    • Daviesia lancifolia Turcz. (W.A)

    • Daviesia latifolia R.Br. – hop bitter-pea (Qld., N.S.W., Vic., Tas.)

    • Daviesia laxiflora (J.H.Willis) Crisp (Vic.)

    • Daviesia leptophylla A.Cunn. ex G.Don – narrow-leaf bitter-pea (S.A., N.S.W., A.C.T., Vic.)

    • Daviesia lineata Crisp (W.A.)

    • Daviesia localis Hislop (W.A.)

    • Daviesia longifolia Benth. (W.A.)

    • Daviesia major (Benth.) Crisp (W.A.)

    • Daviesia megacalyx Crisp (W.A.)

    • Daviesia mesophylla Ewart (W.A.)

    • Daviesia microcarpa Crisp – Norseman pea (W.A.)

    • Daviesia microphylla Benth. (W.A.)

    • Daviesia mimosoides R.Br. – blunt-leaf bitter-pea, narrow-leaf bitter pea, leafy bitter-pea (Qld., N.S.W., A.C.T., Vic.)

    • Daviesia mimosoides subsp. acris Crisp (N.S.W., A.C.T., Vic.)

    • Daviesia mimosoides R.Br. subsp. mimosoides (Qld., N.S.W., A.C.T., Vic.)

    • Daviesia mollis Turcz. (W.A.)

    • Daviesia nematophylla F.Muell. ex Benth. (W.A.)

    • Daviesia newbeyi Crisp (W.A.)

    • Daviesia nova-anglica Crisp (N.S.W.)

    • Daviesia nudiflora Meisn. (W.A.)

    • Daviesia nudiflora subsp. amplectens Crisp

    • Daviesia nudiflora subsp. drummondii (Meisn.) Crisp

    • Daviesia nudiflora subsp. hirtella Crisp

    • Daviesia nudiflora Meisn. subsp. nudiflora

    • Daviesia obovata Turcz. – paddle-leaf daviesia (W.A.)

    • Daviesia oppositifolia Endl. – rattle-pea (W.A.)

    • Daviesia ovata Benth. – broad-leaf daviesia (W.A.)

    • Daviesia oxyclada Crisp (W.A.)

    • Daviesia oxylobium Crisp (W.A.)

    • Daviesia pachyloma Turcz. (W.A.)

    • Daviesia pachyphylla F.Muell. – ouch bush (W.A.)

    • Daviesia pauciflora Crisp (W.A.)

    • Daviesia pectinata Lindl. – thorny bitter-pea (S.A., Vic.)

    • Daviesia pedunculata Benth. ex Lindl. (W.A.)

    • Daviesia physodes A.Cunn. ex G.Don (W.A.)

    • Daviesia pleurophylla Crisp (W.A.)

    • Daviesia podophylla Crisp – buggery bush (W.A.)

    • Daviesia polyphylla Benth. (W.A.)

    • Daviesia preissii Meisn. (W.A.)

    • Daviesia pseudaphylla Crisp – Stirling Range daviesia (W.A.)

    • Daviesia pteroclada Crisp (W.A.)

    • Daviesia pubigera A.Cunn. ex Benth. (N.S.W.)

    • Daviesia purpurascens Crisp – purple-leaved daviesia (W.A.)

    • Daviesia quadrilatera Benth. – buggery bush (W.A.)

    • Daviesia quoquoversus Crisp (Qld.)

    • Daviesia ramosissima Crisp (W.A.)

    • Daviesia reclinata A.Cunn. ex Benth. (W.A.)

    • Daviesia retrorsa Crisp (W.A.)

    • Daviesia rhizomata Crisp (W.A.)

    • Daviesia rhombifolia Meisn. (W.A.)

    • Daviesia rubiginosa Crisp (W.A.)

    • Daviesia sarissa Crisp (W.A.)

    • Daviesia sarissa subsp. redacta Crisp

    • Daviesia sarissa Crisp subsp. sarissa Crisp

    • Daviesia scoparia Crisp (W.A.)

    • Daviesia sarissa Crisp (W.A.)

    • Daviesia scabrella Crisp (W.A.)

    • Daviesia schwarzenegger Crisp & L.G.Cook (N.S.W., Vic., S.A.)

    • Daviesia scoparia Crisp (W.A.)

    • Daviesia sejugata G. Chandler & Crisp (S.A., Tas.)

    • Daviesia smithiorum Crisp (W.A.)

    • Daviesia sp. Calliope (N.Gibson TOI308) Qld Herbarium (Qld.)

    • Daviesia speciosa Crisp (W.A.)

    • Daviesia spinosissima Meisn. (W.A.)

    • Daviesia spiralis Crisp – spiral-leaved daviesia (W.A.)

    • Daviesia sp. Isla Gorge (K.R.McDonald KRM231) Qld Herbarium (Qld.)

    • Daviesia squarrosa Sm. (Qld., N.S.W.)

    • Daviesia striata Turcz. (W.A.)

    • Daviesia stricta Crisp (S.A.)

    • Daviesia suaveolens Crisp (N.S.W.)

    • Daviesia subulata Crisp & G.Chandler (W.A.)

    • Daviesia teretifolia R.Br. ex Benth. (W.A.)

    • Daviesia tortuosa Crisp (W.A.)

    • Daviesia triflora Crisp (W.A.)

    • Daviesia trigonophylla Meisn. (W.A.)

    • Daviesia ulicifolia Andrews – gorse bitter-pea (W.A., S.A., Qld., N.S.W., A.C.T., Tas.)

    • Daviesia ulicifolia subsp. aridicola G.Chandler & Crisp

    • Daviesia ulicifolia subsp. Bybera (C.T.White 12612) Qld Herbarium (Qld.)

    • Daviesia ulicifolia subsp. incarnata G.Chandler & Crisp (S.A.)

    • Daviesia ulicifolia subsp. pilligensis G.Chandler & Crisp (N.S.W.)

    • Daviesia ulicifolia subsp. ruscifolia (A.Cunn. ex Benth.) G.Chandler & Crisp (N.S.W., A.C.T., Vic., Tas.)

    • Daviesia ulicifolia subsp. stenophylla G.Chandler & Crisp (Qld., N.S.W.)

    • Daviesia ulicifolia subsp. stenophylla G.Chandler & Crisp × Daviesia wyattiana F.M.Bailey (Qld.)

    • Daviesia ulicifolia Andrews subsp. ulicifolia (S.A., Qld., N.S.W., Vic., Tas.)

    • Daviesia ulicifolia subsp. Warwick (K.R.McDonald KRM107) Qld Herbarium (Qld.)

    • Daviesia umbellulata Sm. (Qld., N.S.W.)

    • Daviesia umbonata G. Chandler & Crisp (W.A.)

    • Daviesia uncinata Crisp (W.A.)

    • Daviesia uniflora D.A.Herb. (W.A.)

    • Daviesia villifera A.Cunn. ex Benth. (Qld., N.S.W.)

    • Daviesia wyattiana F.M.Bailey – long-leaf bitter-pea (Qld., N.S.W., Vic.)

Sources of information:

•  https://en.wikipedia.org/wiki/Daviesia (2024)