178 MESOZOIC FLORAS OF UNITED STATES. 



number of fairly well-preserved leaves. It is clearly a Sequoia, and is 

 most probably S. Reichenbadii, as the leaves have the size, shape, and 

 mode of insertion of those of that species. It indicates that if the for- 

 itiation containing it is Jurassic it is the upper part of it. But it may 

 well be Lower Cretaceous. 



7. PLANTS FROM SLATE SPRLNGS, MONTEREY COAST, CALIFORNIA. 

 Sequoia Fairbanksi Fontaine n. sp. 

 PI. XLV, Figs. 9-11. 



This is the plant referred to in Pt. II of the Twentieth Annual Report 

 of the United States Geological Survey, pp. 338, 339. Four specimens 

 were obtained, one of which shows no character. They were collected by 

 Mr. H. W. Fairbanks from Slate Springs, California, in rocks underlying 

 the Knoxville group of the Lower Cretaceous. The specimens are poorly 

 preserved and have suffered from maceration. 



The form given in PI. XLV, Fig. 9, is a fragment of the largest leafy 

 branch that was found. The leaves are poorly preserved and pressed close 

 to the stem, so that they can not be seen distinct from it. They seem, 

 however, to have the long slender form that is better shown in the speci- 

 men depicted in Fig. 10. The stem given in Fig. 9 seems to have had a 

 diameter of 5 mm. Fig. 10 represents a much smaller twig. This is 65 

 mm. long and 15 mm. thick. It carries scattered along its length a num- 

 ber of developed leaves and at its end a number of undeveloped ones, 

 forming a bunch similar to those shown on the small twig depicted in Fig. 

 11. The developed leaves, as shown in Fig. 11, maj^, for description, be 

 taken as the normal ones. They are a good deal like those of Sequoia 

 Reichenbachi, and the plant is apparently a sequoia of the Reichenhachi 

 type. The leaves are 15-20 mm. long. They narrow very gradually to 

 an acute point and widen toward the base. They are decurrent and 

 strongly incurved, showing a slender midrib. They are more slender 

 and thinner in texture than the leaves of S. Reichenhachi. Fig. 11 

 gives the terminal portion of a small twig on which the leaves appear 

 to be undeveloped. These leaves are very narrow, short, and straight. 

 They are pressed closely to the stem. 



