22 



PENNSYLVANIAN SPORES OF ILLINOIS 



Battery Rock coal, Hardin County, Illi- 

 nois. The geological range is from the 

 Wayside coal to the basal portion of No. 2 

 coal bed. 



Discussion. — G. granulatus (Ibrahim), 

 S. W. and B., 1944, differs from G. palli- 

 dus sp. nov. in being smaller in size, with- 

 out pronounced corners and, judging from 

 Ibrahim's illustration (Plate 6, fig. 51), 

 apparently has larger granulations, which 

 are not as closely spaced as those of G. palli- 

 das sp. nov. 



Granulati-sporites granularis sp. nov. 



Plate 3, figure 2 



Description. — This form is strikingly 

 similar to G. pallidas sp. nov. except for 

 overall size and size of granulations. This 

 species consistantly measures 4 to 7 microns 

 less than G. pallidas sp. nov. and the granu- 

 lations are smaller and are somewhat more 

 closely spaced. 



Holotype. — Maceration 596-A Slide 1, 

 Grape Creek No. 6 coal bed, Vermilion 

 County, Illinois. This species is known 

 to occur throughout Illinois No. 6 coal bed. 



Discussion. — G. granularis sp. nov. is 

 similar to but distinct from G. pallidus sp. 

 nov. A difference is apparent when one 

 closely examines these two forms, and they 

 are separated geologically. This species 

 may be a transition form of G. pallidus. 



Granulati-sporites aculeolatus sp. 

 nov. 



Plate 3, figure 8 



Description. — Spores are radial, triangu- 

 lar in outline, margin of spore wall is 

 slightly convex between radii, corners 

 opposite radii are bluntly pointed. The 

 holotype measures 28.5 X 31 microns ex- 

 clusive of the setae, and the known size 

 range of this species is 25 X 28 to 33 X 34 

 microns. The spore coat is characterized 

 by numerous blunt setae. The setae range 

 in length from 3 to 3.5 microns and average 

 slightly more than 1 micron in width. At 

 the juncture of the setae with the spore 

 coat, the setae are somewhat wider. The 

 setae on the proximal surface are irregularly 



placed but on the distal side they are uni- 

 formly placed and spaced 2 to 2.5 microns 

 apart. The tetrasporic mark frequently 

 extends three-fourths the distance to the 

 spore wall and on occasion is split open. 

 Lips may be seen with careful focusing. 



Holotype. — Maceration 625-A Slide 3, 

 Willis coal, Gallatin County, Illinois. 



Discussion. — This species is similar to 

 Granulati-sporites microsaetosus (Loose), 

 S. W. and B., 1944, excepting for the fol- 

 lowing: the setae are longer and not regular- 

 ly spaced on the proximal side as illustrated 

 by Loose (pi. 18, fig. 40). Also the spore 

 wall margin between the radii in G. 

 microsaetosus apparently is concave and the 

 corners opposite them are broadly rounded. 



Granulati-sporites spinosus sp. nov. 

 Plate 3, figure 7 



Description. — Spores are radial, triangu- 

 lar in outline, margin of spore wall between 

 radii convex, corners opposite radii bluntly 

 pointed. Holotype measures 31 X 30 mi- 

 crons, and the known size range of the 

 mean diameter of this species is from 26 to 

 38 microns. The spore coat is characterized 

 by numerous sharp spines which completely 

 cover the distal and all of the proximal side 

 except an area surrounding the tetrad mark 

 in some specimens. The spines are almost 

 4 microns long and 1.5 microns wide. The 

 tetrad mark extends nearly to the spore 

 wall and lips are slightly developed. 



Holotype.— Maceration 579-A Slide 1, 

 No. 2 coal, Bureau County, Illinois. 



Granulati-sporites pellucidus sp. nov. 



Plate 3, figure 11 



Description. — Spores are radial, triangu- 

 lar in outline, margin of spore wall dis- 

 tinctly concave between radii, corners 

 opposite radii are rounded. The holotype 

 measures 48 X 48 microns and the size 

 variance ranges from 44 to 53 microns. The 

 spore coat is levigate and the tetrasporic 

 mark is well over three-fourths the distance 

 to the margin of the spore wall. The 

 tetrasporic mark is most unusual in that it 

 is 5 to 6 microns wide. The spore coat is 



