FLORA OF THE SHASTA FOKMA'I'IOX. 24)) 



Order EQUISETALES. 



ramily FXiUISETACE.E. 



G*>nus EQriSl'rrr.M Liniwus. 



Equisetum texensk FontaiiH'. ? 



PI. EXVT, Fin;. 14. 



1893. Equisetum texense Font. : Proc. L" . S. Nat . Mus. , WA. XVI, ]). 263. pi. xxxvi, fig. 1 . 

 1S94. Equisetuntf('.r('nwY<.mi:VmT>i\\ev&'^\i\n\i.n\-. BulKicol.Soc. Am., Vol- V,p.4.5(). 



One of the rock specimens collected by Messrs. Stanton, Diller, and 

 Storrs at locality No. 11 shows a rather obscure iiii|)i'essioii of what was 

 evidently a stem. It contains what appears to be an imperfectly 

 preserved sheath, indicating that it is the stem of some small Eqnisetum. 

 Besides this, there are on the same piece of rock several other imprints 

 still more obscure of what seems to be the same kind of stem. The 

 stems seem to have originally been woody and straight, but are now much 

 macerated and mostly decorticated. The sheath, which is still partly 

 preserved, is swollen and reminds one of the plant from the Trinit\- 

 formation of the Comanche series of Texas," named by th<> writer 

 Equisetum texense. The size of the stem also agrees well with the Texas 

 plant. As, however, the material is scanty and poorly preserved, the 

 identification can not be positive. 



Pliyliiin SPERM^TOPHYT^. 



Class GYMN( )SPE RM.E. 



Order CYCADALES. 



Family CYCADACE.E. 



Genus DIOONITES lUquel. 



DiOOXITES DUNKERIANUS (Gfippcll ) Miqiiel.* 



Pl.LXVI, Fig. 15. 



1S43. Nilssonia pectin Dunk.: Programm d. hohercn Gewerb.schulo in C'a.ssel, 



1843-44, p. 7. 



« Notps on some fossil plants from the Trinity division of flie Comanche series of Texas: Proc. V. S. Nat. 

 Mus., Vol. XVI, p. 263, pi. xxxvi, fig. 1. 



'' Dunkersent specimens of thi.s plant to Goppcrt, who referred it to I'tcrophvllLiniund named il /'. Dunkir- 

 ianum after Dunker had named it yUsonia pecfen. Seward and others now place it in Dioonites, and Duiiker's 



