DESCRirTION OF SPECIES— CIIYPTOGAMIA—LIOIIENES. 35 



Splieria rhytisinoides, Lesqx. 



Plate I, Figs. 5, 5 a. 



Spheria rltytismmdes, Lesqx., Annual Keport, 1874, p. 308. 



Peritheoia punctiform, placed in a simple circular row, larger than in the former species, with 

 borders irregular. 



This species composes, like tiie former, circular spots, by the disposition 

 of its receptacles in a circle. These, however, are larger, five to six only in 

 a simple row, either separated or more generally connected. Tlie spots vary 

 from one to two millimeters in diameter. 



Habitat. — Upon the stem of Caulinites sparganioides at Black Butte.* 



Sclerotiiiiii rubelluin, Lesqx. 



Plate I, Figs. 2-2/. 



Sclerotium ruhellum, Lesqx., Annual Report, 1872, p. 375. 



Perithecia oval or oblong, obtuse, convex when young, then concave or channelled ; spores of a 

 red color. 



The different phases of development of this fungus are seen in figs. 2 

 a to 2 /. Before its maturity, the surface is convex, by an inflation of the 

 receptacle, as in fig. 2 a. I consider this as the first stage of its growth. 

 Later, the central part is depressed, and the borders appear somewhat elevated 

 around it. It then becomes either concave (fig. 2 b), or channeled (fig. 2 c), 

 or flat (fig. 2 d). When the perithecia are ripe, they appear opened, and the 

 inside is covered with a punctate red surface resembling a pulverulent matter 

 like spores. I was, however, unable to detach any of it, or to trace any form 

 of organism in this colored central part. The form of these perithecia is 

 very variable, sometimes small and nearly round, more generally linear- 

 oblong, obtuse, two to four millimeters long, rarely broader than one milli- 

 meter, generally intermediate to the veins of Ftabellaria, and like them 

 buried under the epidermis. 



Habitat. — Upon fragments of leaves of Flabellaria Zinkenil, Golden, 

 Colorado. 



Sclerotium pustuliferum?, Heer, mentioned (Annual Report, 1871, p. 

 300) as growing upon the leaves of Cypei'us, is too indistinct for description, 

 and cannot be figured. 



LICHENES. 



The great scarcity of fossil remains of Lichens is perhaps more remark- 

 able than that of the Fungi. Professor Goppert, in his study of the vegeta- 

 ble fragments preserved in succin, or amber, has demonstrated the existence 



* All the species without name of the discoverer are described from specimens found by the author. 



