CALAMARIEAE. 333 



cylindrical and somewhat narrow spikes. Another fragment from the 

 Myslowitzer Wald in Upper Silesia referred by Weiss l to this genus is in 

 a less perfect state of preservation. The leaf-whorls are formed of many, 

 perhaps twelve, narrow-lanceolate free members which do not touch one 

 another laterally. They seem at the first glance to have obcordate sessile 

 sporangia in their axils; but in many of them may be seen a vertical 

 median strip of tissue running to their apex, which is explained by 

 Weiss to be the sporangiophore and which comes out most plainly in the 

 Myslowitz specimen. If this is the true explanation, as it probably is, 

 then there is in this case no umbrella-like apical expansion. There are 

 some doubts respecting the number of the spores ; from the drawings it 

 might be concluded that there were two median spores ; but Weiss con- 

 siders it possible that they were as usual developed in fours. 



Of Palaeostachya Schimperiana 2 we can only conjecture that it belongs 

 to the genus. It is a large long cylindrical spike of considerable thickness 

 and with the habit of the plant usually known in the literature as 

 Macrostachya, Schpr. It appears in Weiss' 3 earlier publication as Macro- 

 stachya Schimperiana. This spike which comes from Saarbriicken and is 

 inclosed in gray argillaceous sandstone is broken through longitudinally, 

 and shows the axis and the sporangiophores in the axils of the leaves 

 in the form of strips of coal, the latter as very fine strokes. 



The spikes also which are supposed to belong to the genus Huttonia 

 have only been found up to the present time in the form of impressions. 

 In habit they are extremely like the large impressions of Microstachya, 

 so that it is not easy to distinguish the two without a knowledge of the in- 

 ternal structure. The only species certainly determined as belonging to the 

 genus, Huttonia spicata, a well-known fossil first described by Sternberg 4 , 

 appears unfortunately to be rare, having been found hitherto according to 

 Weiss only in Bohemia and near Eckersdorf in Lower Silesia. Good 

 figures are given in Schenk 5 and Weiss 6 , the older ones being reproduced 

 in these authors and also in Schimper 7 . I have never myself had oppor- 

 tunity for minute examination of this form, and I therefore keep to Weiss' 

 statements, which however notwithstanding the careful studies on which 

 they are based are still of rather fragmentary character. The sporangio- 

 phores for instance are known only from vestiges of remains, which are 

 found on the longitudinal fracture of the spike and which spring from the 

 axils of the leaf-whorls. These whorls are composed of numerous, that 

 is of from sixteen to twenty, free lanceolate members which narrow up- 

 wards into subulate extremities, and which from the partial overlapping of 



1 Weiss (5), t. 22, f. 15. 2 Weiss (6), p. 105 ; t. 5, and (5), p. 271 ; t. 21, f. 8. 3 Weiss 



(1), p. 122 ; t. 18. * Sternberg, Graf von (2). 5 Schenk (2), t. 41, ff. i, 2. 6 Weiss 



(6), t. 13, f. 4, and t. 14, and (5), t. 21, f. 9. 7 Schimper (1), t. 17. 



