244 FLORA OF LOWEK COAL MEASURES OF MISSOURL 



STIGMARIA Brougniait, 1822. 



Mum. Mus. liist. nat., vol. viii, p. 228. 

 Sti&maria verrucosa (Martin) S. A. Miller. 



1S04. Parkiuson, Org. Rem., vol. i, pi. iii, iig. 1. 



1809. FhytoUthus verrucosus Martin, Outlines, p. 203. 



1809. PhytoUthus verrucosus Martin, Petrificata Derb., pis. xi, xii, xiii* : Syst. arrange- 

 ment, p. 23. 



1818. PhytoUtlms verrucosus (Martin) Steinhauer, Trans. Amer. Phil. Soc, vol. i, p. 208, 

 pi. iv, figs. 1-4(5, C>% 



1820. Yariolaria ficoides Sternberg, Fl. d. Vorw., vol. i, fasc. 1, p. 24, pi. xl, figs. 1-3 



1822. SUgm aria ficoides (Stb.) Brongniart, M^m. Mus. hist, nat., vol. viii, pp. 228, 239, 

 pi. 1, fig. 7. 



This ubiquitous species, ranging through the greater part of the Car- 

 boniferous epoch, is too well known to all geologists to require further 

 description in order to secure its recognition. Besides the figm-es to be 

 found in nearly all text-books and general paleontologic works, it has been 

 specially illustrated in many papers. Of particular importance among the 

 latter is "A Monograph on the Morphology and Histology of Stigmaria 

 Ficoides," by the late Prof. W. C. Williamson, published by the Palgeonto- 

 graphical Society.-^ No attempt is here made to cite the numerous descrip- 

 tions, the multitudes of figures by Groeppert and others, or the somewhat 

 varied synonymy, beyond reference to the earlier binomial appellations. 



The specific identity of the specimens figured by Parkinson, Stein- 

 hauer, and Martin with those illustrated by Sternberg and Brongniart, 

 on which most paleobotanists agree, involves a nomenclatural situation 

 of no little embarrassment. Steinhauer, whose specific terms are as far 

 as possible respected by most authors, cites Parkinson's excellent fig- 

 ure,^ while adopting the binomial designation proposed for this type and 

 both defined and illustrated by Martin.^ There is no doubt as to the spe- 

 cific identity of Parkiiison's illustration, and it is generally inscribed in the 



> London, 1887, pp. iv, 1-62, pis. i-xv. 



■^Orn-anic Remains of a Former World, etc., 1804, pi. iii, fig. 1. 



'The construction and scope of the name PliyioUthiis verrucosus are clearly and explicitly defined 

 in Martin's " Outlines of an attempt to establish a knowledge of extraneous fossils on scientific prin- 

 ciples." Macclesfield, 1809. See Sect, v, " Principles of nomenclature," pp. 198-205. See " Petrificata 

 Derbiensia," 1809, Systematic Arrangement, p. 23, pis. xi, xii, xiii*. 



