Daviesia inflata Crisp (1984: 165)

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

110. Daviesia inflata Crisp (1984: 165) , Crisp (1987a: 251), Crisp (1995: 1203), Wheeler et al. (2002: 745). Type: ‘ca. 0.5 km S of Brennan Ford crossing of Scott River, ca. 11 km ENE of Augusta, 34°16’S, 115°16’E, 12 September 1977, W. R. Barker 2329, fl.’ Holotype: CANB; isotypes: AD, K, PERTH

Daviesia incrassata Smith (1808b: 255) var. cylindrica Domin (1923: 34) . Type: Not designated, specimen unknown—despite a search at K and enquiries at both PR and PRC, no type of this name has been located. The description is too brief for positive application of the name, but it could be D. inflata .

[ Daviesia colletioides auct . non A.Cunn. ex Bentham (1837a: 75): Meisner (1844: 48), partly; Bentham (1864: 83), partly. Specimens cited: ‘In solo turfoso planitiei prope oppidum Albany, d. 5. October 1840. Herb. Preiss. No. 1180 et in region. interior. Australiae meridionali-occid. No. 1163.’ Specimens seen: Preiss 1180: G (2 sheets), MO (partly), NY = D. inflata ; G, LD, MO (partly) = D. incrassata ; Preiss 1163: G, LD, S = D. inflata . Note: For a discussion of the specimens seen and cited by Meisner and of the identity of this material, see Crisp (1984).]

Shrubs with many ± ascending, sparsely branched stems to 1 m tall, glabrous, green. Root resembling a carrot in external morphology; root anatomy with anomalous secondary thickening (cord type). Branchlets ascending, terete, lightly ribbed, longitudinally wrinkled when dry, frequently galled. Phyllodes scattered, diverging at ca. 45°, terete with an acicular slightly recurved apex, pungent, articulate at base, 5–80(–110) mm long, 0.5–1.5 mm diam., smooth when fresh, longitudinally wrinkled when dry. Unit inflorescences 1 per axil, racemose, 2–5-flowered; peduncle 1.5–3.5 mm long; rachis 1–5 mm long; subtending bracts spreading, spathulate, 1–1.5 mm long. Pedicels 3–9 mm long. Calyx 4–4.5 mm long including the ca. 1.5 mm receptacle, green with a variable infusion of lead grey at least around bases of lobes or sometimes all over; margins of lobes distinctly paler; upper 2 lobes united in a narrow lip, ca. 1 mm long; lower 3 lobes broadly or very broadly triangular, ca. 1 mm long. Corolla : standard very broadly obovate, emarginate, cordate, 10–11 × 9–11 mm including the 1.5–2 mm claw, with a slight basal channel, orange-red with a slight pink infusion towards margins, dark red towards centre, with a vertical yellow guide mark at centre; wings obliquely obovate, auriculate, 7.5–8.5 × 3–3.5 mm including the 2–2.5 mm claw, dark red; keel ovate, falcate, obtuse, auriculate, 7.5–8.5 × 2–2.5 mm including the 4–4.5 mm claw, dark red. Stamens strongly dimorphic: inner whorl of 5 with longer filaments and shorter, subdorsifixed anthers; outer whorl of 5 with shorter, broader filaments and longer, basifixed anthers; filaments all compressed and overlapping; anthers all 2- celled. Pod obliquely shallowly to very broadly obtriangular, inflated, beaked, bladdery when immature, brittle when mature, 15–18 × 11–15 mm; upper suture slightly invaginated; lower suture acute. Seed ellipsoid, ca. 5 mm long, 2.5 mm broad, 2.25 mm thick; aril thickly lobed, obovate in outline, ca. 2–2.5 mm long. ( Fig. 111 ).

Flowering period:— September and October. Fruiting period: December and January.

Distribution:— Western Australia, near the coast from Harvey south to Augusta and east to the Pallinup River.

Habitat:— Grows frequently on sandy clay or peat on swampy flats which are inundated in winter, in heath dominated by sedges and Melaleuca ; also on higher ground on hard laterite in jarrah ( Eucalyptus marginata ) forest.

Selected specimens (71 examined):— WESTERN AUSTRALIA. Darling: Near Nannup , SE of Busselton, ca. 33°58’S, 115°46’E, A. M . Ashby 2375, 13 October 1967 ( PERTH); 42 km from Augusta on Manjimup road, 34°10’S, 115°21’E, E. M . Bennett 2838, 19 December 1968 ( PERTH); 68 km from Pemberton along road to Nannup , 34°03’S, 115°46’E, M . D. Crisp 5354, 21 January 1979 ( CBG, MEL, PERTH); ca. 40 km W of Albany, Hay River Bridge , 34°58’S, 117°28’E, M . D. Crisp 6092, et al., 24 September 1979 ( CBG, L, MEL, MO, NSW, PERTH); 5 km E of Nannup on Pemberton Road , 34°02’S, 115°46’E, A. R . Fairall 842, 19 October 1962 ( PERTH); Yallingup Nature Reserve , 33°42’S, 115°06’E, R . Pullen 9852, 6 December 1974 ( CANB, CBG); 15.5 km from Denmark along South Coast Highway to Albany , 34°59’S, 117°31’E, A . Strid 20429, 23 September 1982 ( C, CBG, K, PERTH) .

A MONOGRAPH OF DAVIESIA

Phytotaxa 300 (1) © 2017 Magnolia Press • 247 248 • Phytotaxa 300 (1) © 2017 Magnolia Press

CRISP ET AL.

Affinity:— Daviesia inflata is similar to D. incrassata and D. physodes . Daviesia incrassata is easily distinguished by its phyllode bases being continuous with the branchlets. Both species may be distinguished from D. inflata by their uniformly coloured calyces without paler margins, and by the lamina of the standard having no paler central guide mark. Also, in both other species, the phyllodes are frequently vertically compressed, becoming dilated or lobed at the apex.

Figures

FIGURE 111. Daviesia inflata. A. Flowering branchlet. B. Inflorescence. C. Pod, lateral view. D. Pod viewed from distal end. A from Ashby 2375; B from Crisp 6092; C, D from Crisp 5354. Drawn by B-J. Osborne.