Daviesia debilior Crisp subsp. debilior

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

87a. Daviesia debilior Crisp subsp. debilior

Reference: Crisp (1982a: 13), Crisp (1995: 1185).

Branchlets gently upcurved, not or slightly sinuous, not glaucous. Phyllodes developed, except towards the branchlet apex where they are abruptly reduced to minute scales, angular or compressed, linear, up to 120 × 2 mm, prominently many-ribbed. ( Fig. 87A–I ).

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

Distribution:— From the Eneabba area south to near Darlington, near Perth.

Conservation status:— National: Not listed. WA: Priority 2, possibly threatened or near-threatened but not yet adequately surveyed.

Selected specimens (17 examined):— Approximate locality data are given because the species is rare. WESTERN AUSTRALIA. Irwin: W of Three Springs on road to Eneabba , 29°50’S, 115°20’E, C . Chapman (16)77, 19 June 1977 ( CBG, PERTH); SW of Eneabba , 30°S, 115°10’E, C . Chapman (66)77, 19 June 1977 ( CBG, US); ibid., C . Chapman s.n., 17 May 1979 ( CBG 8004030 , MEL, PERTH). Darling : N of Bindoon, 31°10’S, 116°E, B. C . Crisp 483, 22 August 1977 ( CBG); near Darlington , 32°S, 116°’ E, A . Morrison s.n., 19 July 1902 ( CANB 578303 ) .

Affinity:— Subsp. sinuans differs in having sinuous branchlets with sometimes curled apices and phyllodes that are all reduced to minute scales.

Figures

FIGURE 87. Daviesia debilior subsp. debilior. A. Flowering branchlet. B. Juvenile phyllode. C. Intermediate phyllode. D. Inflorescence. E. Calyx opened out, upper lobes at left. F. Standard. G. Wing. H. Keel. I. Pod. Daviesia debilior subsp. sinuans. J. Fruiting branchlet. K Seed, lateral view. L. Same, hilar view. A from Chapman (21B)77 (type); B–H from Chapman s.n. (CBG 8004030); I from Chapman (66)77; J from Ising s.n. (AD 97622028); K, L from Demarz 1854. Drawn by A.L. Prowse.