51 



.4* Calamltea coneentrlcft COTTA Dendrol. p. 79. t. 16. 

 f. a— 5. 



C. caale borizontaliter transcisso strias radiatas aequales tenaes 

 creberrimas et lineas concentricas annuliformes ostendente. 

 Calamites concentricus Sternb. Vers. II. p. 51. 

 Cum prioribus. 



Calamiteae dubiae. 



35. Boriila STERNB. et GOPP. 



Caulis arborescens cylindricus, articulatus, longitudinaliter 

 striatus , striis in articulis incrassatis non interruptis. 

 Sternb. Vers. I. 4. p. 28. GSpp. Uebers. p. 198. 



1. Bornla scrobiculata STERNB. l. c. p. 28. 



Calamiies scrobiculatus Schloth. Nachtr. p. 808. t. 80. f. 4. 



In schisto lilhanthr. recentioris formationis (?) in Helvetia ad ^ 

 Turicum,) in formatione transitionis ad Landshut Sliesiae. ■ 



36, Bocfesclila GOPP. 



Caulis arborescens cylindricus, articulatus f ?3 longitudinaliter 

 sulcatus. 



Gdpp. Syst. fil. foss. p. 176. t. 1. 8. 1 



Obs. Genus admodum dabium, a cl. Goppert pro fronde aestima- 

 tam et cum illo Schizeae digitatae comparatum , serius autem 

 pro caale Calamiteae declaratam. 



«. BockHclila flabellata GOPP. Syst.fil. foss.p. 176. 1. 1. 2. 

 In schisto lithantbracum Silesiae ad Waldenburg. 



39. Anartlirocaniia GOPP. 



Caulis cylindraceus exarticulatus, verticillatim ramosus, cor- 

 tice Iongitudinal'ter costato. 

 GOpp. Descr. des vigit. foss. p. 1. 



1. Anarthrocanna deliqaescens GOPP. l. c. t. 26. f. 1. 2. 



In argilla jaspoide formationis transitionis Sibiriae. 



