108 FLORA OF LOWER COAL MEASURES OF MISSOCJEL 



Aphlebia hirsuta (Lx.) 



1854. Pachyphyllum hirsutum Lesquereux, Bost. Jour. N. H., voL vi, 4, p. 421. 



1858. Pachyphyllum hirsutum Lesquereux, in Rogers: GeoL Pennsylvania, voL ii, 



p. 863, pi. viii, fig. 3. 

 1869. Rhacophylhim hirsutum. (Lx.) Schimper, Traite, vol. i, p. 687. 

 1879. Rhacophylhim hirsutum (Lx.) ScLimp., Lesquereux, Coal Flora, Atlas, pi. Ivii, 



fig. 2; text, vol. i, (1880), p. 318. 

 1889. Rhacophyllum hirsutum (Lx.) Schimp., Lesley, Diet. Foss. Pennsylvania, vol. ii, 



p. 871, text fig. 



Among the collections from Missouri novr in tlie National Museum or 

 the Geological Survej^, I have seen no example that seems satisfactorily- 

 referable to this species, which has thus far, I believe, been known from 

 this region only by the fragment illusfrated in fig. 2, pi. Ivii, of the Coal 

 Flora. The differences in the proportionate length, flexuosity, mode of 

 division, and width of the ultimate divisions between the figure above 

 referred to and the origmal type figured^ from a high coal in the southern 

 antlii-acite field in Pennsylvania are somewhat striking, and, notwith- 

 standing the known variations within the same frond in this genus, may, it 

 seems to me, reasonably be considered as of at least varietal importance. 

 In my remarks on Aphlebia Germari 1 have referred to occasional smaller, 

 sparse, spicule-like bristles found in portions of some of the specimens of 

 that species. It is not improbable that some form of villosity may have 

 existed in several of our species of Aphlehia. 



Pachyphyllum affine Lx.,^ inscribed by Lesquereux^ in the synonymy of 

 Bhacliophyllimi hirsutum, appears by its more slender falcate, acute lobules, 

 traversed by a distinct central strand, to be more harmoniously referable to 

 the Pachyphyllum fimhriatum. of the same author.* 



Locality. — Henry Coimty, Missouri, U. S. Nat. Mus., 5520. 



Aphlebia cf. filicifoemis (Gutb.) Sterzel. 

 Many paleobotanists, including Greinitz,^ Schimper,® Lesquereux,'' and 

 Kidston,* have agreed in referring the specimens published by Gutbier as 



1 Geol. Pennsylvania, vol. ii, 1858, p. 863, pi. viii, fig. 3. 



^Geol. Pennsylvania, vol. ii, pi. viii, fig. 1. 



3 Coal Flora, vol. i, p. 818. 



•• Geol. Pennsylvania, vol. ii, pi. viii, fig. 2. 



sVerst. Steinkohlenform. Sachsen, 1855, p. 19, pi. xxv, figs. 11-14. 



"Traitd pal. v.%., vol. i, 1869, p. 685. 



'Coal Flora, vol. i, 1880, p. 316. 



«Fo.ss. Flora Radstock Series : Trans. Roy. Soc. Edinb., vol. xxxiii, 1887, p. 388. 



