152 CONTRIBUTIONS ON PALAEOZOIC FLORAS. 1. On the Identification of Glossopteris cobdata Dana. By J. F. RiGBY, Geology Department, Newcastle University College, Tighe's Hill, N.S.W. (Plate i.) [Read 25th March, 1964.] Synopsis. A neotype for Glossopteris cordata Dana has been selected. Glossopteris feistmanteliir nom. nov., is proposed to describe specimens of G. cordata Feistmantel non Dana described from India and South Africa. Glossopteris cordata Dana. 1849. Glossopteris ? cordata Dana in Wilkes' U.S. Exploring Expedition, vol. 10, p. 718,^ PI. 13, fig. 5. 1880. Glossopteris cordata in Feistmantel, /. roy. 8oc. N.S.W. , 14: 115, 107. 1883. Glossopteris cordata in Tenison-Woods, Pkoc. Linn. Soc. N.S.W., 8 (1): 124 and footnote. 1890. Glossopteris cordata in Feistmantel, Mem. geol. Surv. N.8.W., Pal. 3: 124. 1904. Glossopteris nephroeidicus Etheridge, Rec. geol. Surv. N.S.W. , 7 (4): 315-316, PI. Iviii, lix, fig. 1, 2. Not Recognized as belonging to this Species. 1882. Glossopteris cordata Feistmantel, Flora, gondw. Syst., 4 (1) : 35, PI. XXA, fig. 1. 1932. Glossopteris cordata in du Toit, Ann. Sth. Afr. Mus., 28 (4): 378-381, text-fig. lA-D. The type specimen of Dana, originally housed in the U.S. National Museum, Washington, has been lost (du Toit, 1932, and confirmed by Mamay, pers. comm.). The locality was given as "District of Ulawarra". The type specimens of Glossopteris nephroeidicus Etheridge are housed in the Mines Department Museum, Sydney, N.S.W., and bear the numbers 2878 and 2883 (with its counterpart 2884). These specimens came from the foot of Mount Kembla. They have been relabelled Glossopteris cordata Dana, possibly by Dun. It is impossible to determine the exact position of either locality, but specimens attributable to this species are common in and below the Unanderra Seam near Mount Kembla and Mount Keira. It is suggested that Dana's specimen was an imperfect specimen of the same species as Etheridge described as Glossopteris nephroeidicus. It is proposed that one of these specimens should now become the neotype for the species, viz., No. 2883. This specimen was illustrated by Etheridge (1904) as Plate Iviii. Plate i shows the counterpart, No. 2884, of the leaf selected. The venation is clear on this photograph, but was not clear in Btheridge's photographs. This venation differs from that of his Plate lix, fig. 2. The specimen he illustrated as Plate lix, fig. 1, bears the number 2878. Amended diagnosis. Broadly elliptical leaf, obtuse to broadly rounded apex, margin entire, possibly slightly thickened and recurved, base cordate, auriculate lobes overlap petiole wheu Proceedings of the Linnean Society of New South Wales, 1964, Vol. Ixxxix, Part 1.
BioStor
