314 GEOLOGICAL SUEVEY OF THE TERRITORIES. 



resembliog a Cinnamomum by the nervation of its leaves and a Zizyphns 

 by tlie form. 

 Habitat. — E van ston, Dr. J?'. V. Hayden. ;; 



25. Fious Wyomingiana, sp. nov. • ■ 



May be a variety of the former, resembling it closely by the form of 

 the entire, loug-petioled leaf. The difference is marked, however, by 

 the total absence of secondary veins; the middle nerve beiug joined 

 to the lateral ones by strong nervilles in right angle. 



Habitat. — West of Green Eiver station, Br. F. V. Hayden. 



26. DiOSPYROS ? FICOIDEA, sp. noV. 



Leaf ovate, narrowed to a point (broken), rounded to the petiole, 

 thickish, entire, pinnatelyuerved; midrib thick, deeply marked, as also 

 the secondary veins, parallel, at an acate angle of divergence, all doubly 

 camptodrome; fibrillse thick, nearly in right angle to the veins, divided 

 in the middle ; areolation square or polygonal ; surface rough. The 

 generic relation of these leaves is not satisfactorily fixed. 



Habitat. — Black Butte. 



27. Viburnum platanoides, sp. nov. 



This species essentially differs from Viburnum marginatum by the less 

 numerous, more open, lateral veins, whose branches are more curved in 

 passing up to the borders, and especially by the enlarged truncate or 

 subtruucate base of the leaves. The direction of the veins along the 

 lower branches of the lateral veins is the same, and the borders are den- 

 tate in the same manner, though not black-margined as in V. margin- 

 atum. 



Habitat. — Black Butte, mixed with Saurian bones, and as abun- 

 dant in that bed as is its congener, in the shale above the main coal 

 of the same locality. 



28. CiSSUS PAROTTI^FOLIA, Sp. noV. 



Leaves ovatesnbcordate or narrowed to tne base, gradually and ob- 

 tusely pointed, undnlato-crenate, three- nerved from the top of the peti- 

 ole or from a little above the border-base ; lower secondary veins at a 

 distance from the primary ones, which are much divided ; all the branches, 

 like the secondary veins, craspedodrome ; nervilles strong, in right angle 

 to the veins; areolation small, square, by subdivision of veinlets. 



The species is represented by a few leaves, one of them, fragmentary, 

 has a cordate, unequal base, and may belong to a different species. 



Habitat. — Green Eiver, west of the station, Br. F. V. Hayden. 



29. Rhamnus Eossmassleri ?, Heer. 



Leav^es obloug-obovate, obtusely pointed, entire, narrowed to the base, 

 penninerve ; secondary veins close, parallel, passing to the borders nearly 

 straight and curving along them in festoons. These leaves are small ; 

 one only is preserved entire; their specific relation is not fixed. 



Habitat.— Black Butte. 



30. Phaseolites juglandinus ?, Heer. 



Leaflets of an apparently compound leaf, oval-oblong, obtusely pointed, 

 rounded to a short petiole, entire, subcoriaceous, penninerve; lateral 

 veins parallel, distinctly camptodrome, and following the borders in fes- 

 toons 5 ultimate areolation small, irregularly quadrate. 



