190 FOSSIL PLANTS. 



!Five species in the coal formation;. 



We insert a figure of L. ornatus (fig. 127). 



These cones are supposed to have belonged to lepidoden- 

 dron : but Mr. Hawkshaw found beneath each of the mag- 

 nificent, erect fossil trees discovered by him on the Bolton 

 and Manchester Kailway, a number of cones lying in such 

 a position as indicated their having fallen from the tree. 

 Corda declares them to be the male flowers of coniferce. The 

 trees were pronounced by the late Mr. Bowman to be sigil- 

 laricB. 



Professor Corda, in a Supplement to his Sketches of the 

 Anatomy of Stems, has some further observations on the 

 lepidostrobi. He considers them as divisible into three 

 forms ; the first comprising L. pinaster, Foss. Flo. fig. 198 : 

 and L. ornatus vm-didymus, Foss. Flo. fig. 163. These 

 he regards as fragments of stems, referring L. pinaster to 

 Presl's genus of lycopodites, Bergera pinaster, and L. ornatus 

 to Cycadites ornatus. The second form includes L. orna- 

 tus, Foss. Flo. fig. 26, which he considers as a fruit of yet 

 unknown and problematical kind ; while the third comprises 

 true lepidostrobi, viz. L. variabilis, Foss. Flo. fig. 10, L. como- 

 sus, Foss. Flo. fig. 162, and the specimens figured by Brong- 

 niart, vol. ii. fig. 22 and 23. He adds, that these last will 

 require more investigation than the two preceding forms, and 

 that to ascertain their structure and assign their due cha- 

 racter and position, it will be advisable, at the same time, 

 to take up the investigation of the fruit of lycopodiacece, 

 with which they are compared by Brongniart; then to 

 determine their peculiar structure, and to compare it with 

 those groups and families to which they are referred above. 



Cardiocarpon, from Kapfttov, the heart, and Kap-rros, fruit. 



These are heart-shaped fruits, five species of which occur 

 in the coal formation. 



Stigmaria. Yariolaria, Sternb. ; mammillaria, Brongn. ; 

 ficoidites, Artis. 



Stem originally succulent ; marked externally by roundish 

 tubercles, surrounded by a groove, and arranged in a direc- 

 tion more or less spiral, having internally a distinct woody 

 axis, which communicates with the tubercles by woody pro- 

 cesses. Leaves arising from the tubercles, succulent, entire, 



* Pict. Atlas, pi. ix., fig. 1. 



