Arbkr — The Flora of the Bally castle Ooalfiehl. 17l 



2. Lepidodendron Folkmanniainim, Sternberg. 

 Plate X, fig. 1 ; Plate XII, fig. 14. 



1821. , Ehode, Beitr. Pflanzenk. Vorwelt, 



p. 32, pi. vii, figs. 4, 5. 



1826. Lepidodendron Volkmannianum, Sternberg, Vers. Darstell. Flora Vor- 

 welt, vol. i., pt. iv., p. 44, pi. liii, 

 figs. 3«, U, 3c. 



1877. Lepidodendron Volkmannianum, Stur, Abhandl. K. K. Geol. Eeichs- 



anst., vol. viii. (Culm. Flora, pt. 

 ii), p. 286, pi. XXXV, fig. 4 ; pi. xl, 

 figs. 2, 3«, 35, 3c. 



1903. Lepidodendron Volkmannianum, Kidston,^ Trans. Roy. Soo. Edinb., 



vol. xL, pt. iv., p. 821, pi. ii, fig. 19. 



1905. Lepidodendron Volkmannianum, Fischer, in Potonie, Abbild. Besehreib. 



Foss. Pflanzen, Lief, iii., No. 51, 

 figs. 1-5. 



Locality. — In sandstone at the waste heap at White Mine Colliery, 

 Ballyoastle. 



Diagnosis. — Leaf-bases unsymmetrically rhomboidal or club-shaped, con- 

 tiguous. Lateral angles rounded, the upper margins being convex, and the 

 lower concave to the neighbouring leaf-bases. Leaf-base usually terminating 

 above in an abrupt point, while below the base narrows, though it is still fairly 

 broad where it merges into the leaf-base next below. Leaf-scar placed above 

 centre of tlie leaf-base, tranversely elongate. Upper angle rounded, lateral 

 angles acute, lower angle very wide. The two lower margins of the scar are 

 sometimes slightly concave to the lower part of the leaf-base. Keel 

 prominent, with several transverse, slightly oblique grooves. 



Description of t/ie Specimen. — The specimen which I collected at Ballycastle 

 consists of an impression in sandstone. Part of it is seen on Plate X, fig. 1. 

 A wax cast taken from this impression is also seen on Plate XII, fig. 14. 

 These appear to me to agree very well with the figures previously published 

 of Lepidodendron Volkmannianum, Sternb. This stem, next to L. Veltlieimi, is 

 the best-known Lower Carboniferous Lepidodendron. It is widely distributed, 

 having been previously recorded from England, Scotland, and Ireland (Arigna 

 Mines), as well as from Germany and Austria, though it is not of frequent 

 occurrence in the British Isles. 



' This memoir comaina a full list of retBieutes ami synonyms. 



2o2 



