Acacia blayana Tindale & Court, Telopea 4: 109; 111, fig. 1 & 112, fig. 2 (1990)
Tree to 25 m high; d.b.h. to 36 cm. Bark dark grey. Branchlets terete, angular towards apices, green, brown or purplish, mostly pruinose, glabrous except puberulous towards apices. Young foliage-tips whitish to grey or yellowish, hairy. Leaves coriaceous, glaucous to subglaucous; petiole above pulvinus 1.3–4 (–5.5) cm long, slightly flattened vertically, with an often slightly elongated gland near lowest pair of pinnae; rachis 1–6 cm long, with orbicular jugary glands; pinnae (2–) 3 or 4 pairs, 4–9.5 cm long; pinnules (6–) 12–14 pairs, very narrowly elliptic-oblong, (10–) 15–34 mm long, (1.5–) 2.5–4 mm wide, with a prominent vein closer to upper margin (in upper 1/3) and 2 parallel minor veins not reaching margin, both surfaces with white, appressed, straight or curved hairs, margin often dark red in upper 1/3 of the pinnule, apex broadly rounded or truncate. Inflorescences in axillary or terminal false-panicles. Heads 12–20-flowered, golden. Pods 4–11.5 cm long, 7–11 mm wide, coriaceous, brown, bluish or purplish brown, with paler margin, glabrous.
Occurs on eastern side of Great Dividing Ra. in Wadbilliga Natl Park, South Coast, N.S.W. Grows at 200–600 m alt., in skeletal rocky soils, in steep mountainous country, in almost pure stands or with Acacia mearnsii , and in tall open forest with eucalypts and Tristaniopsis laurina (see D.J.Boland & S.J.Midgley, Acacia ‘blayana’ A.B.Court - a new Australian tree with a future?, Forest Genetic Resources Information No. 12: 21- 23, 1983). Flowers Sept., Oct.; fruits Dec.–Feb.
Acacia blayana belongs to a group of species in sect. Botrycephalae characterised by longer and wider pinnules than the majority of taxa in this section.
Type of accepted name
Brogo R. Catchment, Galoon Ck, 22.5 km WSW of Cobargo, N.S.W., Sept. 1982, J.Blay ; holo: NSW; iso: CANB, K, MEL, PERTH, USDA.
M.D.Tindale & A.B.Court, loc. cit .
N.S.W.: Galoon Ck, Wadbilliga Natl Park, D.J.Boland 1888 (CANB, NSW); 15.5 km along Nelsons Ck fire trail, G.Butler 1368 (CANB); 15.6 km from Yankeys Gap, E.G.Cole 1474 (CANB, NSW); c. 1 km E of junction of Yankeys Ck and Brogo R., P.Cope CBG8203158 (CANB, NSW); N of Bemboka on the Nelsons Ck Trail, B.V.Gunn BG621 (FRI, NSW).
(MDT & PGK)