Filicites sect. Glossopteris BRONGNIART

Cleal, Christopher J. & Thomas, Barry A., 2018, Nomenclatural Status Of The Palaeobotanical “ Artificial Taxa ” Established In Brongniart’S 1822 “ Classification ” Paper, Fossil Imprint 74 (1 - 2), pp. 9-28 : 17

Filicites sect. Glossopteris BRONGNIART

Text-fig. 3b

1822a Filicites (Glossopteris) BRONGNIART , p. 232.

1825 Glossopteris (BRONGNIART) STERNBERG, Tentamen p. xv (nom. rej.).

Ty p e. Filicites (sect. Glossopteris) dubius BRONGNIART, 1822a, p. 232 , pl. 2, fig. 4; Loc.: Pennsylvanian Subsystem; ≡ Glossopteris dubius (BRONGNIART) STERNBERG, 1825 , Tentamen p. xv).

D i a g n o s i s. “fronde simple, entire, transversée par une seul nervure médiane sans nervures secondaires distinctes.”

D i s c u s s i o n. The type of Filicites (Glossopteris) was later re-interpreted by Brongniart (1828a: 87) as a leaf (now regarded as a cone sporophyll) of an arborescent lycopsid, and as a result used the name Glossopteris for a completely different type of leaf with often anastomosing lateral veins. Brongniart’s (1828a) use of the name is widely accepted today (e.g. Chandra and Surange 1979) and to avoid it being supressed in favour of the earlier (1822a) homonym (also of the even earlier homonym Glossopteris RAFINESQUE, 1815 ) the former has been listed as a conserved name with a conserved type since the Paris ICBN ( Stafleu 1957).

Figures

Text-fig. 3. Illustrations of specimens in Brongniart (1822a, b) that were originally generic or section types but which have been subsequently supressed; see text for further details. All reproduced half original size, except d which is original size. a) Lycopodites taxiformis SCHL. ex BRONGNIART. b) Filicites (Glossopteris) dubius BRONGNIART (≡ Glossopteris dubius (BRONGNIART) STERNBERG), Pennsylvanian Subsystem. c) Asterophyllites radiatus BRONGNIART (≡ Annularia radiata (BRONGNIART) STERNBERG). d) Filicites (Neuropteris) heterophylla BRONGNIART (≡ Neuropteris heterophylla (BRONGNIART) STERNBERG), Pennsylvanian Subsystem, Saar-Lorraine.