Daviesia nudiflora Meisner (1844: 53) subsp. nudiflora

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

40a. Daviesia nudiflora Meisner (1844: 53) subsp. nudiflora

Reference: Crisp (1995: 1216).

Glabrous, bushy shrubs to 1.5 m high and 2.5 m broad. Branchlets terete, ribbed. Phyllodes produced only at and shortly below branchlet apex, spreading at 30–90°, reduced to scales on lower portion of branchlets, ovate to elliptic or obovate, narrow to broad, flat or folded upwards along the midrib, apically acuminate and pungent, tapered or abruptly contracted to the inarticulate, decurrent base, 10–50 × 5–18 mm; venation usually visible, yellow-green to glaucous. Seedling phyllodes produced over whole of branchlet, folded upwards longitudinally, with the higher secondary branchlets producing the phyllodes only towards the apex and the phyllodes unfolding, slightly recurved, up to 35 mm long and up to 10 mm wide. Unit inflorescences mostly in axils of scale-leaves (not of phyllodes). Corolla : standard transversely broadly elliptic, 8–12 × 9–11.5 mm including the claw. Pod narrow, acute, 13–14 × 5–6 mm, red. ( Figs 38A–C , 39F, G ).

A MONOGRAPH OF DAVIESIA

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Distribution:— Western Australia, extending across most of the range of the species.

Selected specimens (85 examined):— WESTERN AUSTRALIA. Avon: 21.5 km NNE of Quairading along road to Cunderdin, 31°50’S, 117°19’E, M . D. Crisp 6614, 20 July 1980 ( CBG, MEL, PERTH); 17 km NW of Quairading, 5.5 km W of Tongerung Well , 31°55’S, 117°17’E, M . D. Crisp 6191 et al., 27 September 1979 ( CBG, PERTH); 4 km N of Wongan Hills town , 30°51’S, 116°43’E, M . D. Crisp 6531, 17 July 1980 ( CBG, PERTH) .

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CRISP ET AL.

Coolgardie: Ca. 64 km E of Southern Cross towards Coolgardie, M. E . Phillips WA/68-723 , 9 September 1968 ( AD, CBG). Darling : 1 km N of Mogumber, near bridge, 31°03’S, 116°03’E, C . Chapman (7)78, 6 July 1978 ( CBG, PERTH); Perth , ca. 32°00’S, 115°50’E, J. H . Maiden s.n., October 1910 ( NSW 34924 ); lower Helena Valley , 32°00’S, 116°20’E, J . Seabrook 22, 25 July 1977 ( PERTH); 6.8 km E of Carrabah by road, 31°23’S, 118°45’E, R . Coveny 8357a & B . Habersley, 12 September 1976 ( CANB, K, NSW, PERTH). Irwin : 65 km SW of Coorow on road to Green Head, 30°05’S, 115°33’E, C . Chapman (11)78, 29 July 1978 ( CBG, PERTH); 11 km S of Coolimba – Eneabba Road from 7 km SW of Eneabba, 29°57’S, 115°12’E, M . D. Crisp 6471, 15 July 1980 ( CBG, MEL, PERTH) .

Affinity:— This, the typical subspecies, is also the most widespread and variable. Variation occurs mostly in the shape and size of the phyllodes; however, regional patterns are not sufficiently clear to justify further subdivision of this taxon. It is most similar to subsp. hirtella , which differs in having node-like thickenings on the nerves at the base of the phyllode and is usually hispid on the branchlets (rarely also on the phyllode margins). The other two subspecies (amplectens and drummondii ) differ in having phyllodes developed all the way along the branchlets.

Figures

FIGURE 38. Daviesia nudiflora, Part 1, comparing two of four subspecies. Daviesia nudiflora subsp. nudiflora. A. Flowering branchlet. B. Inflorescence (1-flowered). C. Pod. Daviesia nudiflora subsp. amplectens. D. Flowering branchlet. E. Single-flowered inflorescence in bud. F. Pod. A, B from Crisp 6471; C from Maiden s.n. (NSW 34924); D, E from Crisp 6536 (type); F from Crisp 6432. Drawn by B-J. Osborne (A–C) and A.L. Prowse (D–F)

FIGURE 39. Daviesia nudiflora, Part 2, comparing branchlets of all four subspecies. A. Daviesia nudiflora subsp. amplectens (from Crisp 6690). B–D. Daviesia nudiflora subsp. drummondii. (B from Drummond 133, type of synonym D. nudiflora var. lanceolata; C from Drummond coll. II no. 227, type of basionym D. drummondii; D from Crisp 6203). E. Daviesia nudiflora subsp. hirtella (E from George 2599). F, G. Daviesia nudiflora subsp. nudiflora (F from Phillips WA/68-723; G from Crisp 6531). Drawn by B-J. Osborne. Adapted from Crisp (1995) with permission from CSIRO Publishing.