454 FLORA OP THE CARBONIFEROUS PERIOD. 



Brown; Joggins, Onslow, J. W. D. ; Bay de Chaleur, Logan. 

 Very abundant in the Middle coal formation. 



2. C. simplex, s. n. 



M. C. Grand R., C. F. Hartt ; U. C. Pictou : J. W. D. 



Leaves similar to the last in size and form, but with simple 

 equal parallel nerves. It may be a variety ; but is characteristic 

 of the Upper coal formation. 



Cardiocarpum, Brongt. 



1. Cardiocarpum fluitans, s. n. 

 M. C. Joggins, J. W. D. 



Oval, apex entire or notched. Surface slightly rugose. Nu- 

 cleus round ovate, acuminate, pitted on the surface, with a raised 

 mesial line. 



2. C. bisectatum, s. n. 



M C. Grand Lake, C. F. Hartt. 



Nucleus as in the last species, but striate. Margin widehr 

 notched at apex, and more narrowly notched below. 



3. C. like marginatum. 

 M. C. Joggins, J. W. D. 



4. C. Allied to C. latum, Newberry. 

 M. C. Pictou, H. Poole. 



These Cardiocarpa are excessively abundant in the roofs of some 

 coal seams ; and the typical ones must have been samaras or 

 winged nutlets. They must have belonged to phaenogamous 

 plants, and certainly are not the fruits of Lepidodendron, though 

 some of the spore-cases of this genus have been described as 

 Cardiocarpa. These I propose to place under the provisional 

 genus Sporangites. 



Sporangites, Dawson. 



1. Sporangites papillata, s. n. 

 M. C. Joggins, J. W. L>. 



I propose the provisional generic name of Sporangites for spores 

 or spore cases of Lepidodendron, Calamites and similar plants, not 

 referred to the species to which they belong. The present species 

 is round, about one inch in diameter, and covered with minute 

 raised papillae or spines. It abounds in the roof of several of the 

 shaly coals in the Joggins section, and especially in one in 

 group XIX of that section. 



2. S. Glabra, s. n. 



About the size of a mustard seed, round and smooth. Exceed- 

 ingly abundant in the lower carboniferous coal measures of Hor- 



