98 STICTA. 



ample; disk reddish-brown and blackening; the very entire 

 (now also denticulate) margin becoming pilose or shaggy. 

 Spores fusiform, 2-4-locular, soon without colour, ^ mic. 

 Ach. L. U. p. 450. Nyl. Syn. 1, p. 343. 



Trees, Mexico ; and elsewhere in tropical America, Nylander ; 

 I. c. A difficult species, closely related, on the one hand to S. 

 cometia, Ach., and on the other to S. quercizans. It is under- 

 stood here as represented by Stictina tomentosa, Nyl. in Lindig 

 Herb. N. Gran. n. 120, and n. 119 (from which last however I 

 cannot at all separate in species the S. Lenormandi,V. d. Bosch, 

 Nyl., of Lindig n. 2522, which should seem to carry with it the 

 other lichens of this collection so-named) and S. tomentosa, v. 

 dilatata, Nyl. in Mandou Lich. Boliv. n. 1745. The S. tomentosa 

 of Lindig n. 2521, differs only in smoothness, but is interesting 

 as enabling us to connect with the species before us a Sandwich 

 Island lichen with always rather longer and now 5-6-locular 

 spores, which has sometimes passed with lichenographers for the 

 equivocal S. Ambavillaria, Del. (Nyl. in Herb. Mus. Par.). And 

 this latter plant associates itself readily with the Venezuelan 

 S. leucoblepharis, Mont. & Tuck., already referred here by Ny- 

 lander. The lichen in Lindig coll. 2, u. 82, scarcely well asso- 



ciable with the other conditions of S. tomentosa, cited above, is 

 at least comparable with some of the specimens of Wright Lich. 

 Cub. n. 56 (S. guercizans, v. damcecornifolia). 



12. S. quercizans (Michx.) Ach. ; thallus cartilagineous- coria- 

 ceous, orbiculate and sub-imbricate, or loosely extended, lacini- 

 ate-lobate, smooth ; from greenish-glaucescent becoming reddish- 

 brown, or passing into yellowish ; clothed beneath with a mostly 

 spongy, pale-brownish or blackening (now obsolescent) nap, 

 which is besprinkled with urceolate, whitish cyphels; lobes 

 deeply sinuate and now pinnatifid, with rounded and repaud or 

 crenulate ends, often at length crisped, and fringed densely with 

 minute coralloid branchlets, passing also, in the tropics, into a 

 narrowed, dichotomously-multifid, entangled form, like an anal- 

 ogous state of S. damcecornis ; [apothecia, in tropical specimens, 

 sub-marginal, smallish to middling; the disk reddish-brown; 

 the thin, entire margin now denticulate and pilose, and finally 

 concolorous. Spores fusiform, 4-locular, soon colourless, ^ 



mic.] Tucker m. Syn. N. E. p. 22, & Lick. exs. n. 66. Nyl. 



Syn. 1 ; p. 344-6. 



