ZUR NOMENKLATUR DER PALÄOZOISCHEN GATTUNG TRISTACHYA LILPOP 1937 (SPHENOPSIDA)

Abstract

Summary The name Tristachya Lilpop 1937 for an Upper Paleozoic plant similar to Sphenophyllum is a younger homonym to Tristachya Nees von Esenbeck 1829, a living genus belonging to the Gramineae. The new name Lilpopia is proposed instead of the illegitimate name.

Some aspects of Palaeozoic pteridophytes of India: A critical reappraisal

“…Finding of anisophyllous, isophyllous and intermediate (pseudotrizygoid) type of whorls of leaves in branches of different order of shoots of one and the same species of Sphenophyllum miravallis by Hetterschieid & Batenbrug (1984) has formed strong ground for rejecting symmetry of whorls as basis for separation of genera. However generic separation based on differences between fertile parts like those of Lilpopia Conert & Schaarschmidt (1970) from S. emarginatum made by Lilpop (1937) could form the only sound basis.…”

Aspects of permian palaeobotany and palynology. III. A new reconstruction of Lilpopia raciborskii (Lilpop) conert et schaarschmidt (Sphenopsida)

“…Lilpopia Conert et Schaarschmidt 1970 Type species: Lilpopia raciborskii (Lilpop) Conert et Schaarschmidt 1970. Original diagnosis: The following combined diagnosis for the genus Lilpopia and the species L. raciborskii was given by Lilpop (1937, p. 9): "Stems articulated, sixangular. Leaves to 6 in one verticil, superposed, wedgeshaped, bilobed, with rounded lobes and denticulated frontal edge.…”

“…I, 1--2 and pl. I, 3--4 (gelatine casts) was chosen as the lectotype (Conert and Schaarschmidt, 1970).…”

“…In general their reconstruction of T. crockensis corresponds with Lilpop's reconstruction of T. raciborskii. Conert and Schaarschmidt (1970) replaced the generic name Tristachya by Lilpopia: Tristachya appeared to be a later homonym of the name Tristachya Nees von Esenbeck 1829, which was used for the description of an extant grass from southern Africa.…”

“…He demonstrated that in the fertile verticils the strobili alternated with the leaves, instead of being inserted in the axils of the leaves. Lipiarski's conclusions were mainly based on the examination of the lectotype, chosen by Conert and Schaarschmidt (1970).…”