264 JIKSOZOIC FLOUAS OF rXTTED STATES. 



A considerable iuinil)er of specimens of a conifer that is ))r()l)al)ly 

 Sequoia Reiclienbaclii were found at localities Nos. 1, 16, and 17. They are 

 most numerous at locality Xo. 1. They are all imperfectly preser^'ed and 

 consist of small fragments of branches. Some of them show a diameter 

 of 5 mm. The leaves have the character of those of S. Reirhenhachi. 

 They are comparatively long and are widest at base and decurrent. They 

 have a midrib and narrow gradually to their tips. They are also curved 

 inward toward the stem. 



PI. LXIX, Figs. 4 and 5, represent portions of such leafy l)ranches. 

 Fig. 5 delineates a very slender twig. 



Sequoi.\ ambigua ITpor. 

 PI. LXIX, Fig. 6. 



1874. Sequoia ainhigua Heer: Fl. Foss. Arct., Vol. Ill, Pt. II (Kreide-Flora der 

 Arctisclien Zone), p. 7S, pi. xxi, figs. 1, 2a, 3-8, 9a, 10a, I), c. 



Sequoia ambigua Heer was found in a consideraljle number of speci- 

 mens. It occurs at localities Xos. 1, 16, and 17. It is most abundant at 

 locality No. 1. All the specimens consist of fragments of ultimate twigs, 

 containing some leaves. One of the imprints shows at the summit of the 

 twig traces of a cone. The specimens are not very well preserved, Ijut 

 show the characteristic features of S. ambigua with sufficient clearness to 

 render it certain that this conifer exists in the Horsetown beds. 



PI. LXIX, Fig. 6, represents a fragment of a stout twig, with some of 

 the leaves well preserved. 



GeniLs SPHENOLEPIDILIM Heer. 

 Sphknolepidium Sternbergianum (Dunker) Heer. 

 PI. LXIX, Fig. 7. 



1846. Muscites Stefnhergianus Dunk.: Monogr. d. Norddeutsch. Wealdpiil)ildung, 



p. 20, pi. vii, fig. 10. 

 1849. Juniperites Sternbergianus (Dunk.) Brongn.: Tableau, p. 108. 

 1852. Araucarites Dunkeri Ett. in pt. : Abh. d. k. k. Geol. Reichsanst., Vol. I, Alitli. 



Ill, No. 2, p. 27, pi. ii, figs. 2, 3, 7, S. 



1870. Widdringtonites Dunkeri (Ett.) Schimp.: Pal. Veg., Vol. II, p. 329. 



1871. Sphenolepis Stemhergiana (Dunk.) Schenk: Palaeontographica, Vol. XIX, p. 



243 [41], pi. xxxvii [xvi], figs. 3, 4; pi. xxxviii [xvii], figs. 3-13. 

 1881. SpTienoIepidium Sternbergianum (Dunk.) Heer: Fl. Foss. du Portugal, p. 19, 

 pi. xiii, figs, la, 2-7, 8b, pi. xiv. 



