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Flora of Australia Online

*Diplazium esculentum (Retz.) Sw., J. Bot. (Schrader) 1801(2): 312 (1803)

Hemionitis esculenta Retz., Observ. Bot. 6: 38 (1791); Asplenium esculentum (Retz.) C.Presl, Reliq. Haenk. 1: 45 (1825); Anisogonium esculentum (Retz.) C.Presl, Tent. Pterid. 116 (1836); Microstegia esculenta (Retz.) C.Presl, Abh. Königl. Böhm. Ges. Wiss. 5: 451 (1851); Callipteris esculenta (Retz.) J.Sm., in J.Houlston & T.Moore, Gard. Mag. Bot. 3: 265 (1851); Diagrammaria esculenta (Retz.) Fée, Mém. Foug. 5: 217 (1852); Athyrium esculentum (Retz.) Copel., Philipp. J. Sci., C 3: 295 (1908). T: eastern India, J.G.König ; holo: ?BM n.v.

Illustration: D.L.Jones, Encycl. Ferns 316 (1987).

Rhizome erect, often forming a slender leaning black trunk to 1 m tall, scaly at the apex. Scales c. 1 cm long, dark brown; margins finely toothed; apex long-acuminate. Fronds 1–2 m long, 0.5–1 m wide, erect to arcuate. Stipe black and scaly at the base, paler above. Lamina 2–3-pinnate, 0.5–1.5 m long, 0.5–1 m wide, dark green. Secondary pinnae variable in size, commonly 5–8 cm long, 1.5–2.5 cm wide; margins very shallowly lobed; lobes toothed; basal lobes longer than the rest, glabrous beneath; veins simple or forked; lowest 3–5 pairs of adjacent vein groups anastomosing. Sori spreading along most veins; indusium thin, dark brown; margins becoming uneven with age. 

Naturalised in a couple of swampy areas of south-eastern Qld. Also in India, Malaysia, Indonesia, Philippines, Papua New Guinea and Polynesia. Map 393.

Qld.: edge of TAFE College, Windsor Rd, Nambour, A.L.Moran AQ631585 (BRI); Beerwah Field Research Centre, P.D.Bostock AQ594464 (BRI).

Widely cultivated as an ornamental and for culinary purposes. Similar to Diplazium dietrichianum which differs chiefly in having narrower, more deeply lobed secondary pinnae and a single pair of veins anastomosing in each vein group.

Forms clonal colonies by vegetative increase from root buds.

(D.L.Jones)

 

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