GENUS PUNCTATI-SPORITES 



17 



PUNCTATI-SPORITES PROVECTUS sp. nOV. 

 Plate 2, figure 11 



Description. — Spores are radial, trilete, 

 laterally compressed, spherical in outline 

 with numerous irregularly distributed folds. 

 The holotype measures 75.6 X 78.7 mi- 

 crons. The known size range is from 72 to 

 83 microns. The spore coat is characterized 

 by fine to medium punctations. Occasional- 

 ly folding of the spore coat occurs at the 

 terminus of rays and results in what appears 

 to be an incomplete arcuate ridge. The 

 trilete rays, lips, and commissure are dis- 

 tinct. The rays are uniform length and on 

 the holotype measure 27.3 microns in 

 length. The spore coat is less than 2 

 microns in thickness. 



Holotype. — Maceration 609 Slide 6, 

 Wayside coal bed, Johnson County, Illinois. 



Discussion. — P. provectus, the earliest 

 known species of the genus from Illinois, is 

 not abundant. The presence of folds 

 (ridges) which may be arcuate in nature 

 may be important from the standpoint of 

 phylogeny. 



PUNCTATI-SPORITES VERRUCIFER sp. nOV. 

 Plate 2, figure 6 



Description. — Spores are radial, trilete, 

 roundly triangular in shape, obliquely or 

 laterally compressed. The holotype meas- 

 ures 65 X 66 microns and the size range is 

 from 60 to 74 microns. The spore coat is 

 provided with numerous wart-like projec- 

 tions which are common to both proximal 

 and distal surfaces. The wart-like projec- 

 tions measure up to 4 to 5 microns in di- 

 ameter. The area between the projections is 

 levigate. The trilete mark is often partially 

 obscured by the ornamentation and the rays 

 extend almost to the margin of the spore 

 coat with a slight development of the lips. 

 The spore coat exclusive of the projections 

 measures from 1.75 to slightly over 2 

 microns. The thickness of the spore coat 

 including projections where present ranges 

 from 3 to 4.5 microns. 



Holotype.— Maceration 520-A Slide 1, 

 Bald Hill coal bed, Williamson County, 

 Illinois. 



Discussion. — P. verrucifer sp. nov. is 

 similar to and possibly conspecific with 

 Raistrick's type D 3 . P. firmus (Loose) S. 

 W. and B., 1944, is somewhat similar to 

 the new species described here. 



PUNCTATI-SPORITES FOVEATUS sp. nOV. 

 Plate 1, figure 6 



Description. — Spores are radial, trilete, 

 spherical in shape and somewhat obliquely 

 compressed. The holotype measures 73.5 

 X 73.5 microns and the known size range 

 is from 67 to 84 microns. The spore coat 

 is sharply punctate both proximally and 

 distally. The pits are round to oval in out- 

 line and uniformly distributed. The trilete 

 mark is frequently indistinct and often the 

 spores of this species appear to be alete. The 

 rays are short, only 12 to 15 microns in 

 length. A ridge, possibly an arcuate ridge, 

 surrounds the rays and some specimens have 

 folds of the spore coat which are usually 

 parallel to the outline of the spore. The 

 spore coat is 2.5 to 4 microns thick. 



Holotype. — Maceration 603-B Slide 6, 

 No. 2 coal bed, Fulton County, Illinois. 



Discussion. — This species is readily iden- 

 tified and has markings that might be 

 classified as arcuate. 



PUNCTATI-SPORITES QUAESITUS Sp. nOV. 

 Plate 2, figure 2 



Description. — Spores are radial, probably 

 trilete, spherical in outline and rarely 

 folded. The holotype measures 35.7 X 37.8 

 microns, and the known size range is from 

 33 to 41 microns. The spore coat is punc- 

 tate and the punctations are closely spaced 

 and measure slightly in excess of 4 microns, 

 in the largest diameter. The punctations 

 are round to oval shaped. No definite trilete 

 marks have been observed although faint 

 lines suggestive of the mark have been ob- 

 served on some specimens. The wall meas- 

 ures 2 microns in thickness. 



Holotype. — Maceration 585-C Slide 4, 

 No. 6 coal bed, Franklin County, Illinois. 



Discussion. — This form is provisionally 

 placed in the genus Punctati-sporites even 

 though the trilete mark has not been def- 



