L., Sp. Pl. 1063 (1753).
Synonymy: O. coriaceum Cunn., Compan. Bot. Mag. 2:361 (1837); O. lusitanicum L. subsp. coriaceum (Cunn.)R.T. Clausen, Mem. Torrey Bol. Cl. 19:161 (1938).
Common name: Austral) adders tongue.
Rhizome short, erect; roots few, thick, producing vegetative buds and often forming large colonies; sterile lamina variable in size and form, 0.8-3.5 cm long, narrow-elliptic or broadly elliptic to lanceolate, in small forms the base cuneate to almost truncate; fertile spike emerging from the base of the sterile lamina or some distance down the petiole; spike 5-15 mm long, 1.5-2.5 mm broad, with 6-15 pairs of sporangia borne on a stalk to 7 cm long.
Image source: fig. 22a in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).|
Cochrane et al. (1980) Flowers and plants of Victoria and Tasmania, fig. 628.
It often forms large colonies on open clay loams, especially in the SL, MU and SE. It is frequently encountered in ranges where it occurs in shallow soil pockets subject to flooding or amongst rocks or along stream banks; often overlooked because of its small size.
S.Aust.: NW, LE, NU, GT, FR, EA, EP, NL, MU, YP, SL, KI, SE. All States. New Zealand; New Caledonia; Europe; Asia; North and South America.
Flowering time: No flowering time is available
SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
Included under this species is the Tepper specimen referred to O. nudicaule L.f. by Clausen (1938), Mem. Torrey Bot. Cl. 19, 2:146, which is considered merely as a small form of O. lusitanicum.
Not yet available