Common name: umbrella wattle, miljee
Acacia oswaldii F.Muell. APNI* Synonyms: Racosperma oswaldii (F.Muell.) Pedley APNI*
Acacia amaliae Domin APNI*
Acacia sessiliceps F.Muell. APNI*
Description: Erect or spreading tree or shrub 2–6 m high; bark finely fissured, dark grey; branchlets angled at extremities, soon terete, ± hairy.
Phyllodes linear, narrowly elliptic or narrowly elliptic-oblong, straight to curved, mostly 3–8 cm long (range 2–12 cm long), 2–10 mm wide, 10–15 prominent but fine longitudinal veins, glabrescent with age, apex acute to obtuse with a mucro; 1 gland at base; pulvinus < 2 mm long.
Inflorescences simple, 1 or 2 in axil of phyllodes; peduncles 0–1 mm long, hairy; heads globose, 5–16-flowered, 5–8 mm diam., pale yellow.
Pods strongly curved or twisted or coiled 1–2 times, ± flat except raised over seeds, slightly or variably more deeply constricted between seeds, 4–25 cm long, 5–12 mm wide, leathery to woody, minutely appressed-hairy; seeds longitudinal; funicle expanded towards seed.
Flowering: October–December.
Distribution and occurrence: west of Grenfell, Gunnedah and Yetman districts. widespread in various habitats and communities.
NSW subdivisions: NWS, CWS, SWS, NWP, SWP, NFWP, SFWP
Other Australian states: Qld Vic. W.A. S.A. N.T.
Named after Ferdinand Oswald, who was involved with the collection of the type; he subsequently returned home to Germany.
Text by P.G. Kodela
Taxon concept: P.G. Kodela & G.J. Harden, Flora of NSW Vol. 2 (2002)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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