GENUS REINSCHOSPORA 



43 



broadly rounded. Spore body is flattened to 

 eliptical in lateral profile and the corners 

 frequently folded. Holotype measures 64.2 

 X 71.5 microns including flange and the 

 known size variance is 60 X 69 to 70 X 78 

 microns. The spore coat is levigate except 

 when viewed under oil immersion and then 

 it appears finely granulose. The setae which 

 radiate from the proximal side of the spore 

 are separate and distinct and vary in length 

 from 4 microns at the corners to 12 mi- 

 crons midway between the radii. The setae 

 at this point are embedded as much as 12.5 

 microns into the spore coat and are thus 

 almost 25 microns in their entire length. 

 At the corners opposite the radii the entire 

 length of the setae is 10 microns. Individ- 

 ual seta measure slightly over 1 micron in 

 width and are usually blunt or very slight- 

 ly tapering at the apex. There are usually 

 more than 50 setae between the extremities 

 of 2 rays of the tetrad scar. Due to the 

 short setae at the corners and longer setae 

 between the radii, the entire outline of the 

 spore is subspherical. The trilete rays ex- 

 tend well over three-fourths the distance 

 the margin of the spore wall and are dis- 

 tinct. Lips are usually poorly developed 

 and commissure sometimes distinct. 



Holotype. — Maceration 536-A Slide 1, 

 diamond-drill core (Shoal Creek coal), 

 Franklin County, Illinois. 



Discussion. — Without question this 

 species is similar to R. bellitas Bentall, 

 1944. It differs in having shorter setae 

 which are not united and broader corners 

 opposite the radii, which are frequently 

 folded. 



Reinschospora triangularis sp. nov. 

 Plate 9, figures 6-7 



Description. — Spores are radial and 

 triangular in outline exclusive of spinate 

 flange. Margin between radii slightly con- 

 vex, corners opposite radii pointed. Spore 

 body flattened to elliptical in lateral profile 

 and in contrast to R. magnified sp. nov. the 

 corners are rarely folded. Holotype meas- 

 ures 74 X 74 microns and the known size 

 variance is 66 X 66 to 78 X 79 microns. 

 The spore coat is levigate but appears 



slightly granulose under oil immersion lens. 

 The spines opposite the radii extend 5 

 to 6 microns beyond the spore wall. The 

 spines midway between the radii, frequently 

 partate with round knobs at the apex up 

 to 12.6 microns long, 1 to 1.5 wide at the 

 base, extend as much as 7.3 microns into 

 the spore coat just above the equator of the 

 spore on the proximal side. The outline of 

 the spore including the flange is sub- 

 spherical. The trilete rays, lips and com- 

 missure are distinct and extend nearly to 

 the margin of the spore wall. 



Holotype. — Maceration 573 Slide 2, 

 coal bed 20 feet below Carlinville lime- 

 stone, No. 8 coal, Macoupin County, 

 Illinois. It is also present in the Ditney 

 coal bed, the New Haven coal bed, and 

 Brokaw observed this species in a coal of 

 the Bogota cyclothem. 



Reinschospora punctata sp. nov. 



Plate 10, figure 1 



Description. — Spores are radial and 

 triangular in outline, exclusive of fimbriate 

 flange. The margin of the spore wall be- 

 tween radii is very slightly concave. The 

 corners opposite radii are pointed and fre- 

 quently folded to appear round. Holotype 

 measures 67.5 X 67 microns and the known 

 size variance is about plus or minus 7 mi- 

 crons from the holotype. The spore coat 

 is distinctly punctate. The flange origi- 

 nates slightly to the proximal side of the 

 spore equator and is longest between the 

 radii. It is composed of less than 50 fimbri- 

 ate elements between radii, which appear, 

 in some forms, to be used terminal- 

 ly as well as laterally. The longest fim- 

 briate elements measure 12 microns, 

 opposite the radii 3.5 to 5 microns, and 

 they are embedded into the spore coat only 

 a few microns in contrast to R. magnified 

 sp. and R. tridnguldris sp. nov. The trilete 

 rays extend almost to the spore wall and the 

 lips and commissure are present. 



Holotype.— Maceration 572 Slide 4, 

 Upper Scottville coal, Macoupin County, 

 Illinois. 



Discussion. — This species is greatly 

 similar to R. bellitas Bentall, 1944, but is 



