Daviesia incrassata Smith (1808b: 255)

Crisp, Michael D., Cayzer, Lindy, Chandler, Gregory T. & Cook, Lyn G., 2017, A monograph of Daviesia (Mirbelieae, Faboideae, Fabaceae), Phytotaxa 300 (1), pp. 448-450 : 448-450

publication ID

https://doi.org/ 10.11646/phytotaxa.300.1.1

persistent identifier

https://treatment.plazi.org/id/A05187DC-FF7F-D2EC-FF3C-52B489C75396

treatment provided by

Felipe

scientific name

Daviesia incrassata Smith (1808b: 255)
status

 

108. Daviesia incrassata Smith (1808b: 255) View in CoL , Bentham (1864: 83), Crisp (1984: 167), ( Crisp 1987a: 746), Crisp (1995: 1200), Wheeler et al. (2002: 746). Type: ‘Found at King George’s Sound, on the west coast of New Holland, by Mr. A. Menzies.’ Holotype: King George Sound, west coast of New Holland, (at 35, Menzies, 1803 (LINN); isotypes: BM (2 sheets), MO

Acacia dolabriformis H.L. Wendland (1820: 6) View in CoL . Type: ‘ Nec flores nec fructus vidi, sed tantum unicum specimen in Nova Hollandia lectum ...’ Holotype: GOET.

Daviesia reversifolia Mueller (1859b: 145) View in CoL , Bentham (1864: 83). Type: ‘In monte ‘Flat-top Hill’ juxta rivum Fitzgerald River. Mxw.’ Holotype: MEL 80382; isotypes: K,?MEL 80383.

Rounded to spreading shrubs, to 1 m high, glabrous, ± glaucous (to pruinose). Root anatomy with anomalous secondary thickening (cord type). Branchlets ascending or divaricate, gently to strongly flexuose, trigonous to terete, smooth when fresh, wrinkled-striate when dry. Phyllodes scattered, trigonous to terete, spreading at 45–90° or (in subsp. reversifolia View in CoL ) retrorse, terete or vertically compressed or dilated, at least towards the base of the plant, inarticulate and sometimes decurrent, 5–15 mm long, smooth when fresh, wrinkled-striate when dry. Juvenile phyllodes vertically dilated and asymmetrically lobed (in subsp. incrassata View in CoL ), or not retrorse, gently incurved, vertically compressed but not lobed (in subsp. reversifolia View in CoL ), or strictly terete (in subsp. teres View in CoL ), up to 8 cm long. Unit inflorescences 1(2) per axil, racemose, 2–4-flowered; peduncle occasionally somewhat triquetrous, 0.5–3 mm long; rachis flexuose, 0.25–2 mm long; subtending bracts spreading to ascending, oblong, to 1 mm long. Pedicels dilating towards the apex, terete, 2–4.5 mm long. Calyx View in CoL 2.5–3 mm long including the 0.75–1 mm receptacle; lobes shallowly triangular, subequal with broad, shallow sinuses, upper 2 united higher than the lower 3, 0.5–1 mm long. Corolla View in CoL : standard transversely elliptic to obovate to broadly so, emarginate, with a central groove, 7–8 × 6.5–8 mm including the 1.5–2 mm claw, orange with pink infusion towards the margin, deep red to blackish centrally and on radiating veins, fading to yellowish and grey; wings elliptic with a rounded apex, auriculate, 6–7.5 × 1.5–2.5 mm including the 1.5–2 mm claw, deep pink; keel half very broadly to transversely broadly ovate with an acute, beaked

A MONOGRAPH OF DAVIESIA

Phytotaxa 300 (1) © 2017 Magnolia Press • 241 apex, auriculate, 7–7.5 × 2 mm including the 3–4.5 mm claw, pink with a blackish tip. Stamens weakly dimorphic: inner whorl of 5 with longer, narrower filaments and shorter, subdorsifixed anthers; outer whorl of 5 with shorter filaments and longer, basifixed anthers; filaments all somewhat compressed, cohering towards base; anthers all 2- celled. Pod obliquely shallowly obtriangular with an acute to acuminate, beaked apex, turgid, 11–14 × 8–11 mm; upper suture undulate; lower suture acute. Seed not seen. ( Figs 109 View FIGURE 109 , 110 View FIGURE 110 ).

Flowering period:— June to November. Fruiting period: August to January.

Distribution:— Western Australia, widespread through the south-west from near Dongara to Mt Ragged, between the coast and the wetter (western and southern) fringes of the wheatbelt.

Affinity:— Daviesia incrassata is similar to D. brachyphylla , D. inflata , D. physodes and D. retrorsa . All four species are easily distinguished from D. incrassata by their articulate phyllode bases. Daviesia inflata also differs in having a bicoloured calyx, in which the margins of the lobes are distinctly paler than the rest. Daviesia retrorsa has phyllodes developed only towards the apex of the branchlets, smaller (9–11 mm long), less turgid pods, and the keel is neither incurved or beaked. Daviesia brevifolia has short, non-articulate phyllodes and is very similar to D. incrassata subsp. teres —see under the latter for distinguishing characters.

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Fabales

Family

Fabaceae

Genus

Daviesia

Loc

Daviesia incrassata Smith (1808b: 255)

Crisp, Michael D., Cayzer, Lindy, Chandler, Gregory T. & Cook, Lyn G. 2017
2017
Loc

Daviesia reversifolia

Bentham, G. 1864: 83
Mueller, F. J. H. von 1859: )
1859
Loc

Acacia dolabriformis H.L. Wendland (1820: 6)

Wendland, H. L. 1820: )
1820
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