46 Later Extinct Floras of North America, 



In Taxus bn mfolia the loaves of the young brandies are 

 nearlv as distichous as these, but in T. haceata, T. Canadensis, 

 and usually in T. bn vifolia, there is manifested a tendency to 

 a many-ranked arrangement. This is especially noticeable in 

 the Lrish Few, in which the leaves surround the stem in much 

 the same way as in the spruces. The branchlets are also more 

 delicate than in the Yews, and the foliage must have been 

 more light and feathery, like that of the deciduous cypress, 

 {Taxodiwn distich/urn). 



The resemblance of our plant to T. dubium of the European 

 Miocene strata is so strong, that, even without the fruit, we are 

 fully justified in placing them in the same genus. 



Formation and Locality. Miocene Tertiary strata. Banks 

 of the Yellowstone River, &c. 



Sequoia Langsdorfii ? Br. 



The leaves figured in the report of Col. Raynoldsare part of 

 a large number of the same species collected by Dr. Hayden 

 on the Banks of the Yellowstone River. They include two 

 forms of foliage; one, in which the leaves are many-rowed, 

 short, appressed and awl-shaped ; in the other, they are two- 

 ranked, much longer, linear, acute or rounded, more or less 

 narrowed, decurrent at the base, and traversed by a strong 

 medial nerve. The first form is confined to the larger (and per- 

 manent \) branches; the other to the terminal (and deciduous?) 

 branchlets. This foliage closely resembles that of the deciduous 



cyprese of the Mississippi Valley, but the leaves of the branch- 

 let.- arc less crowded, arc broader and more noticeably decur- 

 rent. Except in this latter character — and that is often not 

 Btrongly marked — there is also little difference to be distinguish- 

 ed between these fossil leaves and those described l>y Brong- 

 niart, (Prod. pp. L08-208), under the name of Taxites Lange- 

 </"/ji'i. and figured by CJnger (Iconographia T. 15, I 13), and 

 Later more fully illustrated by Prof. Eeer (Flor. Tert Helvet. 

 i'. s. 54, T. \\i. tig. it us Sequoia LangsdorJU. The correspon- 



