Daviesia podophylla Crisp (1984: 164)

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

112. Daviesia podophylla Crisp (1984: 164) , Crisp (1987a: 252), Crisp (1995: 1221). Type: 47 miles [75 km] W of Coorow on Coorow–Green Head Road, R.J. Cranfield 273, 21 July 1978, fl. Holotype: CBG; isotypes: A, CANB, MEL, MO, NFLD, NSW, PERTH, UWA

[ Daviesia quadrilatera Benth. in Lindley (1839: xiv), partly, non sens. str.— Crisp (1984: 164) found that the type material of D. quadrilatera comprised two species, one of which he segregated as D. podophylla .]

Divaricately branched shrubs, to 1 m tall and 2 m broad, glabrous, glaucous to pruinose. Root anatomy anomalous (cord roots). Branchlets numerous, diverging at 30–45°, short (5–20 cm long), terete, often spinescent, smooth when fresh, striate when dry, pruinose. Phyllodes fairly crowded, erect, vertically flattened, obliquely quadrilateral or triangular, pungent at apex, with a reflexed spine terminating a broadly triangular lobe on the abaxial margin near the base (rarely with 1 or 2 extra small spines on the adaxial margin), contracted at the base to a short (1–2 mm) pseudo-petiole, articulate, to 25 × 8 mm, smooth when fresh, with raised anastomosing veins

250 • Phytotaxa 300 (1) © 2017 Magnolia Press

CRISP ET AL.

when dry, glaucescent. Seedling phyllodes very broadly obtriangular, pungent at both apices, ca. 15 × 12 mm. Unit inflorescences 1 per axil, racemose, 1- or 2- (3)-flowered; peduncle 1–2.5 mm long; rachis 0–0.5 mm long;

A MONOGRAPH OF DAVIESIA

Phytotaxa 300 (1) © 2017 Magnolia Press • 251 subtending bracts spreading, spathulate, somewhat hooded, ca. 0.5 mm long. Pedicels 2–4 mm long. Calyx broadly campanulate, 2.5–3 mm long including the 1–1.25 mm receptacle; teeth minute (<0.25 mm long); upper 2 lobes ± united; lower 3 lobes flaring from the base. Corolla : standard broadly obovate, emarginate, cordate, 7.5–8 × 6–7 mm including the 1–1.5 mm claw, orange-yellow with a dark red centre; wings obliquely obovate with a rounded, incurved apex that is overlapping and enclosing the keel, auriculate, 6–8.5 × 2.75–3 mm including the 1– 1.75 mm claw, black except the dark red margins; keel half obliquely narrowly ovate, inflexed at centre, upper half contracted to an obtuse beak, auriculate, slightly saccate, 7–7.5 × 1.75–2 mm including the 2.5–3.5 mm claw, dark red infused with black. Stamens moderately dimorphic: inner whorl of 5 with longer, slightly narrower filaments and shorter, versatile anthers; outer whorl of 5 with shorter, slightly broader filaments and longer, basifixed anthers; filaments all compressed; anthers all 2-celled, subdorsifixed. Pod obliquely very broadly to shallowly obtriangular, acuminate, swollen, 11–16 × 7–10 mm; upper suture weakly sigmoid; lower suture acute to 90°. Seed globular, 3 mm diam., red-brown; aril absent because the funicle separates cleanly from the hilum when seed is shed. ( Fig. 113 ).

Chromosome number:— n = 9; voucher G.J. Keighery 2432 ( Crisp 1984).

Common name:— Buggery bush.

Flowering period:— Mainly June to August. Fruiting period: September to November.

Distribution:— Western Australia, from Kalbarri south to Perth, where it is rare, though it is common from Jurien Bay to Three Springs.

Habitat:— On sand with lateritic subsoil in kwongan heath dominated by shrubby taxa such as Banksia and Hakea , with scattered emergent Eucalyptus spp.

Selected specimens (47 examined):— WESTERN AUSTRALIA. Irwin: Three Springs , 29°32’S, 115°46’E, B. C . Crisp 489, 23 August 1977 ( CBG, PERTH); Burma Road , SE of Walkaway, ca. 28°58’S, 114°49’E, A. M . Ashby 2894a, 20 July 1969 ( AD, PERTH); 29 km W of Three Springs , 29°34’S, 115°28’E, C . Chapman (25)76, 31 July 1976 ( CBG, L); just W of Brand Hwy, on Green Head Road , 30°04’S, 115°20’E, C . Chapman s.n., 8 July 1979 ( CBG 8302561 ); Irwin River , ca. 29°17’S, 115°10’E, F. W . Went 225, 6 September 1962 ( PERTH); between Location 9849 and NE corner of Winchester Grazing Co., ca. 29°45’S, 115°55’E, C . Chapman (118)77, 24 October 1977 ( CBG, PERTH); Old Jurien Bay Road ‘A’, ca. 30°18’S, 115°00’E, S . Chambers s.n., 16 July 1969 ( PERTH 5195489 ); 24 km N of Green Head Road along Eneabba South Road, 5 km ENE of Lake Indoon , 29°52’S, 115°12’E, M . D. Crisp 5442, 24 January 1979, seedling ( CBG). Darling: Maida Vale , near Perth, 31°57’S, 116°01’E, M. E . Phillips 2651, 24 October 1962 ( CBG); Perry Road, east of Yanchep , 31°33’S, 115°42’E, J . Havel 61, 11 August 1965 ( PERTH); Gooseberry Hill, Darling Range , 31°57’S, 116°03’E, A . Morrison s.n., 16 August 1906 ( AD 96344252 ) .

Affinity:— Given the vertical orientation and quadrilateral shape of its phyllodes, the only other species with which D. podophylla could be confused is D. quadrilatera . (The original type material of D. quadrilatera was a mixture of both species.) Daviesia quadrilatera differs in having angular branchlets that are never apically spinescent, sessile phyllodes that are adnate to the branchlet by a 1.5–4 mm broad base and especially by its unit inflorescence, which is umbelliform with a robust, 5–12 mm long rachis and 3–6 flowers on pedicels much shorter than the peduncle (pedicels 1–4 mm long, peduncle 5–14 mm). The flowers of D. quadrilatera are rather larger than those of D. podophylla , e.g. the calyx is ca. 5 mm long and the standard is ca. 9 mm broad.

Figures

FIGURE 113. Daviesia podophylla. A. Fruiting branchlet. B. Lower phyllode, showing detail. C. Inflorescence. D. Flower, adaxial view. A from Chapman (118)77; B from Morrison s.n. (AD 96344252); C, D from Chapman s.n. (CBG 8302561). Drawn by B-J. Osborne.