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Flora of Australia Online

Cyathea cooperi (Hook. ex F.Muell.) Domin, Pteridophyta 262 (1929)

Alsophila cooperi Hook. ex F.Muell., Fragm. 5: 117 (1866); Alsophila cooperi Hook. & Baker, Syn. Fil. 2nd edn, 459 (1874), nom. illeg. ; Alsophila excelsa var. cooperi (Hook. ex F.Muell.) Domin, Biblioth. Bot. 20(85): 31 (1913); Cyathea brownii var. cooperi (Hook. ex F.Muell.) Domin, Acta Bot. Bohem. 9: 101 (1930); Sphaeropteris cooperi (Hook. ex F.Muell.) R.M.Tryon, Contr. Gray Herb. 200: 24 (1970). T: Wollongong, N.S.W., W.W.Woolls ; lecto: MEL, fide M.D.Tindale, Contr. New South Wales Natl Herb. 2: 358 (1956).

Alsophila hilliana F.Muell., Fragm. 8: 179 (1874). T: Dalrymple's Gap, Rockingham Bay, Qld, 21 Nov. 1868, J.Dallachy ; lecto: MEL, fide M.D.Tindale, Contr. New South Wales Natl Herb. 2: 359 (1956).

Alsophila australis var. cervicalis F.M.Bailey, Bot. Bull. Dept. Agric., Queensland 7: 22 (1891); Cyathea australis var. cervicalis (F.M.Bailey) Domin, Acta Bot. Bohem. 9: 96 (1930). T: from Johnstone River, cult. Bowen Park, [Brisbane], Qld, 14 Nov. 1890, F.M.Bailey ; lecto: BRI, fide M.D.Tindale, Contr. New South Wales Natl Herb. 2: 359 (1956).

Alsophila australis var. pallida F.M.Bailey, Bot. Bull. Dept. Agric., Queensland 7: 23 (1891); Cyathea australis var. pallida (F.M.Bailey) Domin, Acta Bot. Bohem. 9: 96 (1930). T: Johnstone River, cult. Bowen Park, [Brisbane], Qld, 14 Nov. 1890, F.M.Bailey ; lecto: BRI, fide M.D.Tindale, Contr. New South Wales Natl Herb. 2: 359 (1956).

Alsophila australis var. excelsa F.M.Bailey, Bot. Bull. Dept. Agric., Queensland 7: 22 (1891). T: between Cairns and Herberton, Qld, 1891, C.J.Wild ; lecto: BRI, fide M.D.Tindale, Contr. New South Wales Natl Herb. 2: 359 (1956).

[Alsophila excelsa auct. non R.Br. ex Endl.: T.Moore, Index Fil. 4: 50 (1857); W.J.Hooker & J.G.Baker, Syn. Fil. 40 (1866); F.Mueller, Census Austral. Pl. 1: 137 (1882); F.M.Bailey, Queensland Fl. 6: 1949 (1902)] 

Illustration: S.B.Andrews, Ferns Queensland 111, fig. 8.1B (1990).

Rhizome to 12 m tall, to 15 cm diam.; lower trunk often much thickened by adventitious roots. Stipe to c. 50 cm long; basal scales to 50 mm long, c. 5 mm wide, thin, whitish or pale brown, with short close-set dark orange-brown setae; smaller scales often with a broad orange-brown margin. Lamina to 3.5 m long; longest pinnae to 65 cm long; pinna rachis sparsely verrucose, with many small scales which mostly have brown marginal setae; pinnules to 12 cm long, to 2.5 cm wide, lobed almost to costa, with a few basal lobes adnate; lobes crenate-serrate, sometimes glaucous on lower surface; scales near base of costae narrow, brown, with marginal setae, grading to shorter whitish scales with rather long, brown or whitish marginal setae; a few thick hairs on both surfaces of costae near apices of pinnules. Sori exindusiate, with narrow scales usually with setiferous margins around receptacle base. Fig. 64E–G, frontispiece and cover illustration.

Occurs in eastern Qld and eastern N.S.W. to 35°S, locally naturalised in south-western W.A. and possibly southern Vic.; recently reported as a serious weed of rainforests on some Hawaiian islands. Grows in forest margins or open places. Map 174.

W.A.: source of Gingin Brook, A.S.George 10121 (PERTH). Qld: Daintree R., L.S.Smith 11506 (BRI, K, NSW). N.S.W.: Dyer Crossing, near Nabiac, L.Gilbert (NSW P557). Vic.: Chinaman Ck, Wilsons Promontory Natl Park, P.G.Abell 294 & C.Herskovich (NSW).

An occasionally cultivated form of C. cooperi from central and northern Qld has narrow, recurved, abaxially glaucous pinnule lobes, with the majority of rhizome and stipe scales lacking any brown colouration. The sori in this form are commonly restricted to the basal part of each pinnule, at least on younger plants. The Victorian collection may be an isolated accidental occurrence rather than a sample from a naturalised population.

(Peter D.Bostock (based on an unfinished manuscript by the late R.E.Holttum))

 

Data derived from Flora of Australia Volume 48 (1998), a product of ABRS, ©Commonwealth of Australia