436 
Ad terram in silvis, sterilis. Specimen unicum in collec- 
tione adest, : 
9. Stereocaulon albicans Th. Fries Monogr. Stereoe, p. 68. 
Ad saxa, sterilis. 
10. Stereocaulon myriocarpum B. Orizabae Th. Fries Mono- 
graph. Stereoc. p, 34. 
Cienega, ad terram in silvis alpinis, 
11. Stereocaulon ramulosum (Sw.) Ach.; Th. Fries Monogr. 
Stereoc. p. 24. . 
Ad saxa in silvis alpinis, frequens, Rio seco prope 
Oran, Cienega, Rio negro inter Oran et 8. Andr&s eie, 
12. Umes barbala Fr. j 
f. florida Fr. 
Ad arbores, frequens. ! 
S. strigosa Ach. 
Cum priore, frequens. 
Ff. glaucescens. 
Apotheeiorum disco glauco. — Cum typo, non raro. 
J. hirta Fr. 
‚Cum typo. 
13, Usnea Hieronymi Krph. sp. n. 
‘ Plante, caespitem densum e multis speciminibus sin- 
gulis compositum efformans. Speeiminis singuli thallus erectus 
(elt. eirc. 6-8 centim.), cinereo-virens vel virescens, ramoso- 
virgetus, stipites (rami primarii) ramulique teretes striato- aut 
papilloso- vel verruculoso-scabrida (papillis et striis albidis), 
subtus versus solum subnudi, nigricantes, crebre fibrillosi, fibril- 
lis plus minus longis, scabridis, adscendentibus (non horizon- 
telibus!); apothecia terminalia, lat, usque ad 1 centimet., pelti- 
aut scutelliformia, horizontalia, disco pallido, margine recepta- 
ceulari fibrilloso-ciliato, fibrillis longis, exeipulo subtus tenuiter 
nervoso vel scrobiculato; sporae 8nae, ellipsoideae, simplices, 
hyalinae, long. 0,009—011, crass. 0,006—007 mm. 
Color albissimus medullae denudatee nec hydr. Kalic., 
nec hypochl. cale., nec jodo mutatur. 
Prope Oran, in Sierra Tucreman (Vallis alte), inter 
7000-8000”, Cienega, Cuesta de Pinos, ad rupes („an Fels- 
‚blöcken“). var. adusta Krph. Fibrilli versus apices plus minus 
nigricantes, quasi adusti, caetera ut in typo, 
Ad rupes cum typo, 
