GENUS GRANULATI-SPORITES 



21 



mark is present and the lips are poorly 

 developed. The rays of the tetrad extend 

 three fourths of the distance to the spore 

 wall. The spore coat is 1 to 1.5 microns 

 thick. 



Holotype. — Maceration 543-C Slide 8, 

 No. 5 coal, Fulton County, Illinois. This 

 species appears to be slightly more abundant 

 in western Illinois than in southern Illinois 

 No. 5 coal. 



Discussiofi. — This species is somewhat 

 similar to G. deltoides (Ibrahim), S. W. 

 B., 1944; however it is smaller and the 

 tetrad rays do not extend to the margin 

 of the spore wall. 



Granulati-sporites grandis sp. nov. 



Plate 3, figure 10 



Description. — Spores are radial, sub- 

 triangular in outline, margin of the spore 

 wall between radii strongly concave, cor- 

 ners opposite radii rounded although the 

 spore is laterally compressed. The holo- 

 type measures 74 X 84 microns and speci- 

 mens are known to range from 66 to 75 mi- 

 crons and 75 to 86 microns. The spore coat 

 is essentially levigate although when viewed 

 with oil immersion lens a fine granulation 

 may be observed. The tetrasporic mark is 

 distinct, rays extend almost to the margin 

 of the spore wall, and the lips are definite. 

 There appears to be a thickening which may 

 be a super development of lips or equivalent 

 to an area contagionis. The spore coat is 

 4 microns thick between the radii ; opposite 

 the radii it frequently measures more than 

 4.5 microns in thickness. This slight 

 thickening of the spore coat opposite the 

 radii suggests a resemblance to the genus 

 Triquitrites. However, the thickening is 

 so slight that it seems unwise to consider 

 this point further. 



Holotype.— Maceration 490-A Slide 8, 

 McCleary's Bluff coal (3y 2 inches), Wa- 

 bash County, Illinois. This species has 

 been observed only in the above mentioned 

 coal. 



Discussion. — Morphologically this species 

 must be classified as a member of the genus 

 Granulati-sporites. It is much larger than 

 any previously described species of this 



genus, but this fact merely extends the size 

 range of the genus. It is similar in con- 

 struction to G. levis sp. nov. but is larger 

 and the spore wall is much thicker. 



Granulati-sporites levis sp. nov. 



Plate 3, figure 5 



Description. — Spores are radial, sub- 

 triangular to triangular in outline, margin 

 of the spore wall between radii slightly 

 concave or convex, corners opposite radii 

 bluntly pointed, generally laterally com- 

 pressed. Diameter is generally 48 X 50 

 microns and the spore coat is levigate. The 

 tetrasporic mark is distinct, frequently torn 

 open, and extends two-thirds to three- 

 fourths the distance to the spore wall. The 

 lips are distinct and thick, thinning toward 

 the apex of the radii. The spore wall is 

 uniformly 2 microns thick. 



Holotype.— Maceration 500-B Slide 2, 

 Central Pipe Line-Liddle Nq. 1 (Friends- 

 ville Coal), Wabash County, Illinois. 



Discussion. — This species is known at 

 present only from the upper McLeansboro 

 group from Illinois. 



Granulati-sporites pallidus sp. nov. 



Plate 3, figure 3 



Description. — Spores are radial, sub- 

 triangular in outline, margin of the spore 

 wall between radii slightly concave, corners 

 opposite radii broadly rounded, in some 

 instances flattened, and spore body is 

 laterally compressed but not to the degree 

 of most species of this genus. Average di- 

 ameter measures 38 X 38 microns the size 

 ranging from 35 to 42 microns. The cor- 

 ners opposite the radii measure 14 to 20 

 microns in width in the lateral plane. The 

 spore coat is distinctly granulose on both 

 proximal and distal sides of the spore. The 

 granulations are numerous and closely 

 spaced, which gives the spore a rough 

 appearance. The tetrasporic mark is dis- 

 tinct, the rays usually extend two thirds the 

 distance to the spore wall, and lips are 

 somewhat developed. The spore coat is 

 uniformly 1.5 to 2.1 microns thick. 



Holotype.— Maceration 587 Slide 1, 



