FROM THE SECONDARY ROCKS OF BRITAIN. 



i 



1838. Cycadites Bucklandi, Presl in Stern. Flora der Vorw. fasc. vii. & viii. p. 19t. 

 1849. Cycadoidea squamosa, Brongn. Tabl. Veg. Foss. p. 106. 



This species is known only from a single specimen found in the great Oolite of Nones- 

 field, Oxfordshire. It is a fragment of the growing end of an axis, the np]>cr portion 

 of which is covered with triangular scales, like those in species of X(tmi<t or Enctyhal- 

 artos, and the lower portion exhibits the small, regular meshes or reticulation of 

 the woody cylinder, the scales and cortical layer having been broken away. The ma- 

 terials are insufficient to distinguish it from the other Bpeci< or even to refer it with 

 certainty to its proper genus; but the great difference between its age and that of am 

 of the other allied forms warrants the retention of the name and the recognition of it 

 as a species. 



From the Stonesfield Slate. [University Museum, Oxford] 



When Sternberg figured this fossil, he referred it to Con if era, comparing it with th< 

 cone of Finns Abies, Linn. Presl, in recording it in his Teniamen (p. xxxixj amoi 



-< 



coniferous cones, suggests that it is more probably Oycadean; he afterwards placed it 

 among the Cycadece under the name Cycadites Bucklandi, Buckland thought it might 



be the amentum of one of his fossil species. Brongniart placed it ori maty in Lilian* 

 (Prodr. p. 128), but afterwards referred it to its true position (Tabl. p. 106). 



B. Milleriana, sp. nov. (Tab. LV. fig. 1.) 



Scars of the leaves subrhomboidal, agreeing in form with those of B. tmotnala, but much 



smaller. The smaller scars compressed-rhoinboidal, sometim I mark- 1 With a nor 



zontal line across the middle of the scar. The phyllotaxy is reprewited by th, 



fraction 



2 1 



From the Coral 

 [Dunrobin-Castle Museum] . 



Hugh Miller [Edinburgh ftfttteun . II 



There is, in the collection of Mr. C. W. Peach, a fragment of whjj a P1 > , te ■ *• 

 another species, characterized by having the scars deeper than broad ; bal H* art 



are not sufficient to distinguish it satisfactori ly 



II. Y 



- 



j •♦, tW» «l,nrt net nt bases of 1" tiolei i KV 



ylindrical, of uniform thickness, and covered m* the^ , - ^ ^^ ^^ 



scattered among those of the true 



oi ine aoortea leaves suatra cu <***i~" & — 



forming a cone, each carpophyll of which bears two rdLexed Ofuiet. 



i i Vmv-P l)een borne .hi the main axis - 



No bud of specialized fruit-bearing leaves con to v, • ^ ^ . ^ „ 



r 



the stems grouped together in this genus in« - • . ^ y am0nirsT 

 somewhat smaller scars of the aborted leaves °^*V ~ } J,^ & mP( iul1 

 leaves, but in the same series with them. In one sped* y • _ 



ordinan 



i was 



bundles, as in the living member, <h 



penetrated with vascular bundles, as in wio «<> B ^ »,.,., , t vm1 Make* 't imp 



The condition in which the specimens of the other *9™ > , m fruite ^^ | 



sible to discover what was the nature of their pith. > omc. . 



