20 



PENNSYLFANIAN SPORES OF ILLINOIS 



Granulati-sporites commissuralis sp. 

 nov. 



Plate 3, figure 1 



Description. — Spores are radial, trian- 

 gular in outline, margin of spore wall 

 between radii concave, corners opposite 

 radii rounded. Holotype measures 29.5 X 

 26 microns, and the known size variance is 

 from 26 X 34 to 25 X 33 microns. The 

 spore coat is coarsely granulose and the 

 granulations are closely spaced in most 

 specimens. The tetrad mark is distinct and 

 extends at least three-fourths the distance 

 to the spore wall. The commissure is dis- 

 tinct, and the lips are slightly developed but 

 broken in part by granulations. The spore 

 coat is 1.5 to 2 microns thick. 



Holotype. — Maceration 486-B Slide 22, 

 Friendsville coal, Wabash County, Illinois. 



Discussion. — This species is similar to 

 the genotype G. granulatus (Ibrahim) S. 

 W. and B., 1944, and may be conspecific 

 with Raistrick's D 8 (1937, p. 911) which 

 was illustrated but not named. It differs 

 from G. granulatus in that the granulations 

 are larger and the rays are longer. The rays 

 also appear to be somewhat longer than 

 Raistrick's D 8 . 



Granulati-sporites concavus sp. nov. 



Plate 3, figure 4 



Description. — Spores are radial, sub- 

 triangular in outline, margins between 

 radii strongly concave, corners opposite 

 radii rounded. Holotype measures 55 X 

 58.8 microns, and the known size variance 

 is about 6 microns more or less than that 

 of the holotype. The margin of the spore 

 coat between the radii parallels the radii for 

 a considerable distance, and ranges in width 

 from 22 to 24 microns. The spore coat is 

 levigate and the tetrad mark extends at 

 least three-fourths of the distance to the 

 spore wall ; the lips and commissure are 

 distinct. Spore coat is less than 2 microns 

 thick. 



Holotype. — Maceration 318 Slide 10, 

 "Ditney" coal bed from New Haven dia- 

 mond drill core, White County, Illinois. 



Discussion. — This species is similar to 



G. pellucidus sp. nov. and is found in 

 association with Reinschospora which fur- 

 ther suggests a relationship between the two 

 genera. However, there exists little simi- 

 larity of the spore bodies of the two species. 



Granulati-sporites adnatus sp. nov. 



Plate 3, figure 9 



Description. — Spores are radial, roundly 

 triangular in outline, margin of the spore 

 wall between radii concave, corners opposite 

 radii broadly rounded. Spores are laterally 

 compressed and the holotype measures 35 X 

 36 microns while the known size range of 

 this species is 32 to 39 microns. The spore 

 coat is levigate distally and proximally 

 except for an area adjacent to the tetrad 

 scar. This area is somewhat thicker and 

 appears slightly granulose under high 

 magnification. The tetrasporic mark is 

 distinct and extends at least three fourths 

 of the distance to the spore wall. The lips 

 are well developed and there is a definite 

 area contagionis. The spore coat is uni- 

 formly slightly less than 2 microns thick 

 except at the contact area. 



Holotype. — Maceration 573 Slide 8, Coal 

 20 feet below the Carlinville limestone (No. 

 8 coal), Macoupin County, Illinois. 



Discussion. — This species has an area 

 contagionis which has not previously been 

 reported present in this genus. This species 

 is strikingly similar to Raistrick's D 14, and 

 also illustrated by Knox (1938, p. 459). 

 However, they illustrate no area con- 

 tagionis and on this basis it is not possible 

 to consider their form conspecific with G. 

 adnatus sp. nov. 



Granulati-sporites convexus sp. nov. 



Plate 3, figure 6 



Description. — Spores are radial, sub- 

 triangular in outline, margins between radii 

 convex and corners opposite radii rounded. 

 The holotype measures 61 X 60 microns 

 and the known size range is about plus or 

 minus 7 microns of that given for the holo- 

 type. The spore coat is levigate but when 

 examined with an oil immersion objective 

 the spore coat is finely granulose. The tetrad 



