Daviesia debilior Crisp subsp. sinuans Crisp (1982a: 14)

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

87b. Daviesia debilior Crisp subsp. sinuans Crisp (1982a: 14) , Crisp (1995: 1185). Type [approximate locality data given because the species is rare]: Wongan Hills area, 30°50’S, 116°40’E, 17 July 1980, M. D. Crisp 6518, fl., fr., spirit material, photos. Holotype: CBG; isotypes: AD, K, L, MEL, NSW, PERTH

Branchlets very weakly ascending, becoming sinuous, occasionally glaucescent, the tips usually very slender (ca. 0.5 mm diam.) and occasionally curled. Phyllodes all reduced to scales. ( Fig. 87J–L ).

Flowering period:— May to July. Fruiting period: October and November.

Distribution:— From near Coorow south to the Moore River and east to the Wongan Hills, Western Australia, occurring farther inland than subsp. debilior .

Conservation status:— National: Not listed. WA: Priority 3, possibly threatened or near-threatened but not yet adequately surveyed.

Selected specimens (19 examined):— Approximate locality data are given because the species is rare. WESTERN AUSTRALIA. Irwin: Near Coorow , 29°50’S, 116°00’E, B. C . Crisp 490, 23 August 1977 ( CBG, PERTH). Avon: Wongan Hills area , 30°50’S, 116°40’E, M . D. Crisp 5490, 26 January 1979 ( BISH, CBG, PERTH) ;

198 • Phytotaxa 300 (1) © 2017 Magnolia Press

CRISP ET AL.

ibid., C. E . Woolcock D 11, 15 July 1981 ( CBG); E of Moora , 30°40’S, 116°10’E, C. A . Gardner s.n. ( PERTH 05195209 ) .

Affinity:— Subsp. debilior differs in the branchlets not being sinuous, and never glaucescent. The phyllodes are developed except towards the branchlet apex, where they are abruptly reduced to minute scales.

The specimen B.C. Crisp 483 has been included under D. debilior subsp. debilior but shows some tendency towards subsp. sinuans . The branchlets have longer leafless terminal portions than is usual for subsp. debilior . In fact, one branchlet has the phyllodes reduced to scales along its entire 30 cm length. In addition, this branchlet is strongly curved upwards and almost sinuous. The specimen is from Wannamal, close to localities of subsp. sinuans and farther inland than the other localities of subsp. debilior .

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.