168 SIGILLAB.IA.. 



regions, that one might be almost tempted to refer them to that 

 species, but nevertheless he believes them to be distinct. 



The fragments from India, figured by Feistmantel 1 as Coniferous 

 stems of ? Rhipidopsis, have a superficial resemblance to the South 

 African specimens. Mr. Seward has, however, decided that the 

 Indian fossils are too imperfect to afford any evidence as to their 

 real nature. 



B-othrodendron Leslii is known only from Yereeniging in the 

 Transvaal, South Africa. 



Not represented in the British Museum collection. 



Family SIGILLARLE. 



Arborescent Lycopods, stems unbranched or very rarely 

 dichotomously branched. Stem longitudinally ribbed or without 

 ribs, bark smooth, often ornamented. Leaf-scars hexagonal, lateral 

 angles prominent, median angles usually rounded, often emarginate 

 above. Prints of the leaf-scar three, the central vascular print 

 punctate, the lateral prints of the parichnos crescentie or straight. 



Leaves linear-lanceolate or elongate linear, uninerved. Cones 

 (Siyillariostrobus) either stalked and borne in irregular whorls on 

 the stem, or sessile in two opposite vertical rows on a fructiferous 

 branch ( Ulodendron in part). Sporangia heterosporous, large, 

 elongate, borne on the upper surface of the sporophylls or bracts, 

 which are spirally arranged or whorled. 



Rhizome (Stigmaria in part) similar to that of Lepidodendron. 



Internal structure similar to Lepidodendron, differing only in 

 details. 



The family Sigillariae is represented by a single type of stem, 

 Sigdlaria, a genus appearing first in the Lower Carboniferous and 

 probably extending to the Bunter (Trias). 



Genus SIGILLARIA, Brongniart, 1822. 



[Class. Veget. foss., pp. 209, 222.] 



External surface of the stem longitudinally ribbed ( F.udgillarian 

 type) or without ribs (Subsigittarian type). Leaf scars contiguous 



1 Feistmantel (80), p. 124, pi. xlviiA, figs. 5-7. 



