Daviesia divaricata Benth. subsp. lanulosa Crisp & G.Chandler, 2017

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

14b. Daviesia divaricata Benth. subsp. lanulosa Crisp & G.Chandler , subsp. nov.

Differs from D. divaricata subsp. divaricata in having a prominent ring of woolly hairs around the inside of the calyx lobes, the upper two lobes are not united in a truncate lip and the calyx has five prominent ribs.

Type: WESTERN AUSTRALIA: Irwin: Hutt River Plains , 4 km NNW of Yerina Spring, 28°04’S, 114°19’E, M. D. Crisp 6312, J. Taylor & R. Jackson, 1 October 1979. Holotype: CBG; isotypes: CANB, PERTH.

Calyx tapering from the apex of the lobes to the base of the receptacle, prominently 5-ribbed; lobes ca. 0.75 mm long, with thick, woolly hairs inside; upper two lobes united higher than the lower three but not forming a truncate lip. Corolla : standard 8–8.5 × 9.5–10 mm including the ca. 1.5 mm claw. ( Fig. 16B, C ).

Etymology:— The subspecific epithet, from the Latin meaning woolly, refers to the ring of woolly hairs inside the calyx lobes.

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

Distribution: — Western Australia, replacing subsp. divaricata in the north, from near Walkaway to the Murchison River.

Habitat:— White, grey or yellow, sometimes gravelly, sand, in Banksia and Acacia heathland.

Selected specimens (23 examined):— WESTERN AUSTRALIA. Irwin: 46 km NW of Strawberry on Burma Road , 28°58’S, 115°00’E, M . G . Corrick 8275, 28 September 1982 ( CANB, MEL); 17.5 km W of Walkaway , 28°56’S, 114°48’E, J . S . Beard 6922, 25 October 1973 ( PERTH); Moresby Range, Howatharra Hill Reserve , 33.5 km N of Geraldton, 28°12’S, 114°39’E, D. & N . McFarland 1147, 21 August 1974 ( PERTH); 48 km E of Geraldton , 28°43’S, 115°00’E, J . Long 47, 19 September 1960 ( PERTH); 23 km N of Geraldton along highway to Carnarvon , 28°36’S, 114°38’E, M . D. Crisp 9377 & L . G . Cook, 12 October 2001 ( CANB, MEL, NSW, PERTH) .

Affinity:— See diagnosis above.

Figures

FIGURE 16. Daviesia divaricata subsp. divaricata. A. Branchlet in bud, flower and immature fruit. Daviesia divaricata subsp. lanulosa. B. Inflorescence with flowers represented by calyces only (woolly hairs are internal and not visible from this angle). C. Pod. A from M.E. Phillips WA/62-924; B, C from Crisp 6312. Drawn by B-J. Osborne.