DESCRIPTION OF SPECIES— CONIFER JS—ABIBTINE^. 77 



sites Hardlii, Goepp., Chamoicyparites, Endl., Sequoia ? Senogalliensis, Mass., 

 Steinliauera minuta, Sternb.; even Taxodmin duhium and T. laxum, Ett. Its 

 affinity to plants of the present flora is witli Sequoia sempervii-ens, Endl., the 

 Redwood of California. 



Habitat. — Black Buttes ; Haley coal mines, with S. longifolia; Floris- 

 sant {Dr. F. V. Hay den). 



Sequoia ang:ustifolia, Iiesqz. 



Plate VII, Figs. 6-10. 



Sequoia angusiifoUa, Lesqx., Annual Report, 1872, p. 372 ; 1873, p. 409. 



Branchlets short, slender ; leaves at unequal distances, sometimes very close, two to tbree together 

 or very distant, often dimorphous, linear-lanceolate, taper-pointed, open or curved hackward, decurrent ; 

 middle nerve indistinct. 



This form, though very variable, preserves its peculiar characters : the 

 narrow, lanceolate, acute leaves, decurrent but not narrowed at base, with a 

 thin, scarcely distinguishable, middle nerve. These leaves are not evidently 

 distichous, but sometimes placed all around the branches. The cone is as yet 

 unknown, but I refer to it the seed in fig. 10, which is oval, obtuse, and nar- 

 rowly margined or winged. From the former species, to which it is evi- 

 dently closely related, it differs by the consistence of the leaves, which are 

 not as thick and not coriaceous ; by their shape, narrower and more acutely 

 pointed, not narrowed at the decurrent base ; by the scarcely visible middle 

 nerve. The similarity of this form to that described and figured by d'Ettirigs- 

 hausen in Bil. Fl., p. 34, pi. xii, figs. 1-13, as Taxodium duhium and T. laxuM, is 

 indeed striking, and as all these fragments have been identified with Sequoia 

 Langsdorffii, our species should be, therefore, and has been, considered as a 

 variety of this. But even here there is a marked difference in the form and 

 position of the leaves, which are represented by the European author as all 

 narrowed at the base and generally distichous, and another still in the seeds, 

 which, though of the same form, are twice as large in the American species. 



Habitat. — Elko Station, Utah Territory {Profs. S. W. Garman, E. D. 



Cope). 



Sequoia Heerii, Lesqz. 



Plate VII, Figs. 11-13. 

 Sequoia Heerii, Lesqx., Annual Report, 1871, p. 290. 



Branchlets slender ; leaves short and narrow, distant, linear, obtuse or obtusely pointed, narrowed 

 at the base and decurrent ; middle nerve thin ; strobile borne upon a naked pedicel, round, flattened at 

 the toji ; scales peltate, rhomboidal, obtuse iu the upper and lower side. 



Except that the leaves are generally obtuse and narrowed to the point 

 of attachment, and more distant, this species is similar to the former. The 



