Acacia armillata (Pedley) Pedley, Austrobaileya 3: 215 (1990)
Tree to 8 m high with pendulous branches. Bark rough and grey at base of trunks, smooth and mottled above. Branchlets lenticellate, glabrous. Phyllodes narrowly elliptic to lanceolate, sometimes oblanceolate, straight to shallowly falcate, 7.5–15 cm long, 5–20 (–33) mm wide, acuminate, thinly coriaceous, glabrous, with 5–10 distant main nerves and longitudinally reticulate inbetween; gland 1–2 mm above pulvinus, sometimes an additional gland near middle of phyllode. Inflorescences rudimentary 2-headed racemes, 1 or 2 per axil; raceme axes 1–2 mm long; peduncles 3–7 mm long, to 12 mm in fruit, glabrous; heads globular, 3.5–4 mm diam., 20–30-flowered, pale yellow. Flowers 5-merous; sepals united at base. Pods strongly constricted between seeds, flat, to 10 cm long, 6–11 mm wide, thinly coriaceous, sparingly reticulate, glabrous, breaking into one-seeded indehiscent segments; margins narrowly winged. Seeds longitudinal, oblong-elliptic, c. 5 mm long, dull, dark brown; funicle not or scarcely thickened into a clavate aril.
Known from only three widely separated localities on or near the Great Dividing Ra. in north-eastern Qld, namely, the Iron Range Mining area on Cape York, around Mt Janet and from the Walsh R./Price Ck junction. Grows in Eucalyptus cullenii and E. normantonensis woodland.
Phyllode width is variable, often on a single plant. Young plants may have phyllodes to 18 cm long.
Related to A. excelsa which has normally shorter phyllodes with fewer nerves per face and exarillate seeds. Phyllodes often superficially very similar to those of A. hylonoma which is most readily distinguished by its gland 3–15 mm above the pulvinus and its pods which are not or scarcely constricted between the seeds. Also related to A. johannis .
Type of accepted name
12 km SE of Mt Janet on Survey road along Great Dividing Ra., Qld, J.R.Clarkson 6291 ; holo: BRI; iso: CANB, DNA, K, MEL, MO, NSW, PERTH, QRS, SAN (only PERTH sheet seen).
Synonymy
Racosperma armillatum Pedley, Austrobaileya 2: 325 (1987). Type: as for accepted name.
Illustration
L.Pedley, Austrobaileya 2: 326, fig. 1F- I (1987).
Representative collections
Qld: 12.1 km SE of Mt Janet on survey road along Dividing Ra., J.R.Clarkson 5507 (BRI, K, MEL, PERTH); 12 km SE of Mt Janet on survey road along Dividing Ra., J.R.Clarkson 6288 (BRI, DNA, K, MEL, NSW, PERTH).
(RSC & BRM)
The information presented here originally appeared on the WATTLE CD-ROM which was jointly published by the Australian Biological Resources Study, Canberra, and the Department of Parks and Wildlife, Perth; it was produced by CSIRO Publishing from where it is available for purchase. The WATTLE custodians are thanked for allowing us to post this information here.
