STICTA. 101 



tifid divisions with retuse-bifid ends ; [apothecia, in exotic speci- 

 mens, now scattered and now marginal, smallish to middling- 

 sized ; the disk reddish-brown and blackening ; the paler margin 

 mostly entire. Spores cymbiforra, 2-locular, brown, ^'^ mic.] 



Ach. L. U. p. 447. Tuck. Lich. exs. n. 65. S. crocata, & S. 



gilva, Nyl. Syn. I, p. 338. 



Rocks among mosses, and rarely also on trunks, New Eng- 

 land, Tuckerman Syn. 1848. Canada, Macoun. Mountains of 

 North Carolina, S. B. Buckley. Oregon, Hall. It is unknown 

 here in a fertile state. The narrowed form (f. laciniosa) ap- 

 pears to connect the more familiar wide one with the at length 

 palmately many-cleft plant of the Sandwich Islands, which does 

 not differ from the var. gilva, Ach., from the Cape of Good Hope. 

 The fruit of S. crocata varies in a manner perhaps not wholly 

 without bearing on Dilleuius's account of the fruit of S. sylvatica. 

 It occurs now scattered, on the wider-lobed fronds, with the look 

 of that of Parmelia ; and, then again, on the narrowed condi- 

 tions, it is marginal. And the shores of the Straits of Magellan 

 furnish us, finally, with an otherwise marked state (v. mallota (*) ) 

 in which the conspicuous apothecia are not only exactly marginal 

 and oblique (as in S. aurata in Mart. Ic. PL Crypt. Bras. t. 14, 

 f. 1, 1) but occur moreover on somewhat extended lobules, and 

 deserve the character of sub-peltate (Fr. L. E. p. 50) and a com- 

 parison with the peltate ones of the cited figure of Dillenius quite 

 as much as those of S. aurata. 



15. S. anthraspis, Ach.; 'thallus cartilagineous-coriaceous, 

 wide-lobed, lacunose-reticulate, now conspicuously beset, like 

 the following species, with grey soredia; olivaceous-brown be- 

 coming tawny, and russet-brown ; rounded at the circumference 

 which is sub-crenate, or now more deeply cut and retuse-bifid ; 

 beneath covered with a pale nap, darkening and denser toward 

 the centre, and besprinkled with white, sorediiform cyphels; 

 apothecia scattered; middling-sized; disk from red-brown be- 

 coming black and convex; excluding the thin, entire (or also 

 now denticulate) margin. Spores fusiform, 2-4-locular, very soon 

 colourless, y~ mic. Ach. L. U. p. 449 ; Syn. p. 233. 



(*) Sticta crocata, var. mallota, Milii; tliallo utrinque plus minus 

 liirsuto ; apotlieciis marginalibus ol)liquis. Sporce speciei nisi 4-locu- 

 lares, longit. 0,025-32 mm -? crassit, 0,008-ll mm -. Ad Fretum Magellani- 

 cum, jRei\ T. Hill. Does not differ at all from the wider lobed condi- 

 tion of S. crocata, a, except in the points named. 



