Daviesia quoquoversus Crisp (1990: 249)

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

58. Daviesia quoquoversus Crisp (1990: 249) , Crisp (1995: 1226). Type [approximate locality data given because the species is rare]: Queensland, Leichhardt , Blackdown Tableland , 23°50’S, 149°00’E, R.J. Henderson 1060, L. Durrington & P. Sharpe , 7 September 1971. Holotype: BRI; isotypes: CANB, MEL, NSW

136 • Phytotaxa 300 (1) © 2017 Magnolia Press

CRISP ET AL.

Diffuse shrubs to 2 m high; hispid on branchlets, scarcely so on midribs and margins of phyllodes, the hairs bent or twisted in every direction. Root anatomy unknown. Branchlets arching, terete, ribbed. Phyllodes crowded, divaricate or reclinate, ovate, broadly ovate or cordiform, acuminate with a long tapering pungent apex, undulate, basally cordate or truncate, articulate, 6–9 × 2.5–6 mm, green; midrib prominent above; venation usually conspicuous, reticulate. Unit inflorescences 1(2) per axil, flowers solitary or (rarely) 2 in umbels; peduncle 0.5–1.1 mm long; bracts ascending, broadly to very broadly obovate; subtending bracts 0.3–0.5 mm long, 0.3–0.6 mm broad. Pedicels 3.1–6.2 mm long. Calyx 2.8–3.1 mm long including ca. 0.5 mm receptacle; lobes 1–1.25 mm long; upper 2 united in a truncate emarginate lip; lower 3 very broadly triangular. Corolla yellow with red markings; standard reflexed, transversely elliptic, scarcely emarginate, auriculate, 5.5–6 × 6–6.25 mm including the 1.5–2 mm claw; wings obovate-oblong, rounded and incurved at apex, prominently auriculate at the base, 5.5–6 × 2–2.5 mm including the 1.5–2 mm claw; keel falcately ovate, almost narrow, beaked, scarcely saccate and auriculate at the base, ca. 5.75–6 × 1.5 mm including ca. 2.25 mm claw. Stamens strongly dimorphic: inner whorl of 5 with longer, terete filaments and versatile, discoid anthers with confluent thecae; outer whorl of 5 with shorter, compressed filaments and basifixed, ovoid, 2-celled anthers; filaments free. Pod obliquely very shallowly

A MONOGRAPH OF DAVIESIA

Phytotaxa 300 (1) © 2017 Magnolia Press • 137 obtriangular, acuminate, compressed, 9–10(–12) × 6–7 mm; upper suture sigmoid; lower suture acute. Seed not seen. ( Fig. 58 ).

Flowering period:— July to September. Fruiting period: From September.

Distribution:— Known only from the Blackdown Tableland in the Expedition Range, Queensland.

Habitat:— Occurs on the plateau summit, at elevations of 600–900 m, on sandy soil derived from sandstone. Associated vegetation is open forest dominated e.g. by Eucalyptus baileyana Mueller (1878: 37) and Corymbia bunites ( Brooker & Bean 1991: 423) K.D. Hill & Johnson (1995: 373), together with sclerophyll shrubs such as Banksia and Ricinocarpos Desfontaines (1817: 459) .

Conservation status:— National: Not listed. Qld: Vulnerable.

Additional specimens examined:— Approximate locality data are given because the species is rare. QUEENSLAND. Leichhardt: Blackdown Tableland , 23°50’S, 149°E, M . D. Crisp 2968, 12 June 1977 ( CBG); ibid., R. J . Henderson 874, S. B . Andrews & P . Sharpe, 27 April 1971 ( BRI); ibid., S. G . Pearson 300, 1 August 1981 ( BRI) .

Affinity:— Daviesia quoquoversus appears to be closely related to D. villifera , with which it shares a distinctively beaked, falcate keel-petal. However, D. villifera differs in bearing straight, hispid hairs abundantly all over the vegetative parts, including the lamina of the phyllode. Daviesia squarrosa and D. nova-anglica , although possessing a differently shaped keel, have a glabrous phyllode lamina, like that of D. quoquoversus . In those species, however, the hairs are straight, quite unlike the bent and twisted hairs of D. quoquoversus . Daviesia pubigera and D. filipes are similar to D. quoquoversus in being more or less hispid but differ in having narrowly ovate or oblong phyllodes with more or less recurved margins and the keel is neither falcate nor beaked.

Figures

FIGURE 58. Daviesia quoquoversus. A. Branchlet in flower and fruit. B. Phyllode, adaxial surface. C. Inflorescence (1-flowered). D. Calyx opened out, upper lip at left. E Standard. F. Wing. G. Keel. H. Pod. A, E–H from Henderson 1060 (type); B from Crisp 2968; C, D from Pearson 300. Drawn by M.D. Crisp. Adapted from Crisp (1990) with permission from CSIRO Publishing.