462 BENNETTITALES [CH. 



WUliamsonia (?) phoenicopsoides Ward. 



This fossil from tke Cretaceous of the Black Hills, Dakota i, 

 is much too imperfect to be accepted as a record of Williamsoma. 



WUliamsonia elongata Lesquereux. 



This species, foimded on part of a conical receptacle with some 

 appendages superficially resembling those of WUliamsonia^, is 

 too incomplete to be determined with any confidence. The 

 type-specimen is from Cenomanian beds in Kansas. 



WUliamsonia virginiensis Fontaine. 



This is undoubtedly a true member of the genus; it is 

 characterised by narrow ovate bracts bearing conspicuous hairs 

 surrounding the base of a receptacle which shows a portion of an 

 annular zone of interseminal scales*. 



WUliamsonia (?) gallinacea Ward. 



This species from the Potomac beds* is of no value as a record 

 of WUliamsonia. 



WUliamsonia (?) Bibbinsi Ward. 



The imperfectly preserved specimen from the Potomac series 

 so named by Ward^ is probably part of an Abietineous cone as 

 stated by Berry® who includes Ward's type with other specimens 

 referred to Abietites macrocarpus Font. 



WUliamsonia cretacea Heer. 



Two specimens, figured by Heer' from the Lower Cretaceous 

 of Greenland, on which this species is founded, consist of an axis 

 covered with small scale-leaves and at the broad apex bearing 

 numerous narrow Hnear bracts forming a more or less spherical 

 cluster 3-8 cm. in breadth. The species resembles W. problematica 

 (Newb.). 



' Ward (99) B. p. 668, PI. OLxn. fig. 20. 



= Les(iuereux (91) p. 87, PL a. fig. 9. 



* Fontaine (89) B. p. 273, Pis. 133, 165. 



« Fontaine in Ward (05) B. p. 485, PI. cvn. fig. 4. 



5 Ward (05) B. p. 554, PI. cxv. fig. 11. 



6 Berry (11) p. 405, PI. lxvu. figs. 1 — 4. 

 ' Heer (82) B, p. 59, Pis. xn., xm. 



