Daviesia divaricata Benth. subsp. divaricata

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

14a. Daviesia divaricata Benth. subsp. divaricata

Calyx campanulate, with or without a thin ring of hairs around the calyx lobes, with 5 faint ribs on the lobes; upper 2 lobes united into a broad, truncate lip, ca. 0.25–0.5 mm long; lower 3 lobes triangular, 0.25–0.5 mm long. Corolla : standard 6.5–8 × 8–10 mm including the 1–1.5 mm claw. ( Fig. 16A ).

Flowering period:— June to early November. Fruiting period: August to November.

Distribution:— Western Australia, near the coast from Geraldton south to Busselton area; extending inland (e.g. Three Springs) in the north.

Habitat:— Grows on sandy soils over clay, gravel or laterite or limestone, on flat sandplains or hills in heathland, mallee shrubland or eucalypt woodland.

Selected specimens (116 examined):— WESTERN AUSTRALIA. Irwin: 25 km W of Three Springs , 29°32’S, 115°33’E, C . Chapman (21)76, 31 July 1976 ( CBG, K, PERTH); 13 km W of Arrino , 29°26’S, 115°30’E, C . Chapman (31)76, 31 July 1976 ( CBG, MEL, PERTH); 6 km N of Three Springs , 29°30’S, 115°44’E, C . Chapman (21)78, 30 October 1978 ( CBG, MEL, PERTH). Avon : 8 km W of Moora, 30°38’S, 116°05’E, D. J. E . Whibley 3141, 8 October 1969 ( AD, PERTH). Darling : 12 km SE of Cliff Head, 35°11’S, 117°54’E, S . Chambers 143, 22 September 1966 ( PERTH); Waroona , 32°51’S, 115°55’E, G. F . Berthoud s.n., July 1907 ( NSW 34806 ); 14.5 km N of Yanchep , 31°25’S, 115°37’E, M. E . Phillips WA/62-924 , 22 September 1962 ( CBG 9714 ) .

Affinity:— Subsp. divaricata differs from subsp. lanulosa mainly in the calyx, which lacks a ring of prominent, woolly hairs inside the lobes. Also, the upper 2 lobes are united into a truncate lip and the calyx ribs are not as prominent.

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.