THE CARBONIFEROUS ROCKS OF CANONBIE, DUMFRIESSHIRE, ETC. 769 



1865. Gymnogramme obtusiloba, Ett., Foss. Flora d. Mahr.-schles. Dachschiefers, p. 22, excl. fig. 6. 



1884. Pseudopecopteris obtusiloba, Lesqx., Coal Flora, vol. iii. p. 753. 



1899. Pseudopecopteris obtusiloba, White, Foss. Flora of the Loicer Coal Measures of Missouri, p. 24, pi. 



vii. figs. 1-3, pi. viii. 

 1833. Sphenopteris irregularis, Sternb., Essai Flore monde prim., vol. ii. fasc. 5-6, p. 63, pi. xvii. fig. 4. 

 1862. Sphenopteris irregularis, Roemer, Palxont., vol. ix. p. 24. pi. v. fig. 5. 



1866. Sphenopteris irregularis, Andrse, Vorivelt. Pflanzen., p. 24, pi. viii., pi. ix. fig. 1. 



1869. Sphenopteris irregularis, Roehl, Flora cl. Steink.-Form. Westph., p. 56, pi. xvi. fig. 2, pi. xxxi. figs. 



5-6. 

 1869. Sphen. (Gymnogrammides) irregularis, Schimper, Traife d. paleont. v/'get., vol. i. p. 373. 

 1836. Cheilanthites irregularis, Gopp., Syst. fil foss., p. 247. 

 1877. Diplothmema irregtdare, Star, Culm Flora, Heft ii. p. 230. 



1885. Diplothmema irregulare, Stur, Die fame d. Carb. Flora, vol. i. p. 296. 



1880. Pseudopecopteris irregularis, Lesqx., Coal Flora, vol. i. p. 211 (?pl. Iii. figs. 1-3, 8). 



1830. Sphenopteris trifoliolata, Brongt. (uon Artis), Hist. d. vigit.foss., p. 202, pi. liii. fig. 3. 



1848. Sphenopteris trifoliolata, Sauveur (non Artis), VSget.foss. d ten-, /to/til. Belgique, pi. xix. fig. 2, pi. 



xxi. 

 1866. Sphenopteris trifoliolata, Andrse (non Artis), Vonoelt Pflanzen., p. 28, pi. ix. figs 2-4. 

 1869. Sphenopteris trifoliolata, Roehl (non Artis), Foss. Flora d. Steink.-Form, Westph., p. 65, pi. xvi. 



, fig - 3 - 

 1883. Sphenopteris trifoliolata, Renault (non Artis), Cours d. botan.foss., vol. iii. p. 192, pi. xxxiii. figs. 



7-8. 



1886. Sphenopteris trifoliolata, Zeiller (non Artis), Flore foss. bassin houil. d. Valen., p. 75, pi. i. figs. 



1-4. 

 1899. Sphenopteris trifoliolata, Potonir (non Artis), forma laxa, PotoniS, Lehrb. d. Pflanzenpal.,'p. 137, fig. 



130. 

 1848. Sphenopteris grand if rous, Sauveur, Vegk.fo&s, d. terr. houil. Belgique, pi. xiv. 

 1883. Sphenopteris Weissiana major, Achepohl, Nieden-hein.-Westfdl. Steink. Gebirge, p. 121, pi. 



xxxvii. figs 14-18. 

 1883. Sphenopteris Schillingsiil Achepohl, ibid., p. 89, Erganzungs Blatt, iv. figs. 21-22. 

 1883. Sphenopteris Andrcii, Achepohl, ibid., p. 94, pi. xxxii. fig. 2, Erganzungs Blatt, iv. fig. 37. 

 1883. Sphenopteris Andrcii major, Achepohl, ibid., p. 122, pi. xxxviii. fig. 4, Erganzungs Blatt, iv. fig. 64. 

 1883. Sphenopteris Weissiana, Achepohl, ibid., p. 114, pi. xxxiv. figs. 16-18, Erganzungs Blatt, iv. fig 55. 

 1886. Sphe?iopteris pol 'yphyl'l 'a, Zeiller (non L. and H.), Flore foss. bassin houil. d. Valen.,]). 73, pi. i. 



fig. 4. 



Locality. — Engine Pit, Rowanburn. 



Horizon. — Shale associated with " Five-foot Coal." 



Remarks. — Considerable confusion seems to exist ainonsfst continental botanists 

 as to the distinctive characters of Sphenopteris trifoliolata, Artis, sp., for, as far as known 

 to me, none of the specimens which have been identified as that species by continental 

 writers are referable to Artis' plant. Sphenopteris trifoliolata, Artis, sp., does not 

 appear to have been met with out of Britain. 



The pinnules of Sphenopteris trifoliolata are smaller and more distant than those 

 of Sphenopteris obtusiloba. and the plant has a much laxer growth. A trifoliata arrange- 

 ment of the pinnules is frequent on some specimens of Sphenopteris obtusiloba, — a form 

 probably only depending on its position on the frond, — and this is the plant which has 

 invariably been mistaken for Sphenopteris trifoliolata, Artis, sp. 



Sphenopteris trifoliolata, though not common, is not unfrequent in the Middle Coal 



