154 CORRESPONDENCE, 
86. Usnea barbata, var. plicata, Mudd. U: ceratina, Nyl. U. ceratina and 
U. plicata pass into each other, and are not at all times distinguishable, and I 
may have confused them. 
. 55. Cetraria glauca, var. fallar, Mudd. | Platysma ulophyllum, Nyl. e 
mistake here. I presume No. 56, Cetraria sepincola, will be the plant intended. 
C. ulophylla, Ach., is a luxuriant: state of C. sepincola, having the margins of 
lobes more or less crisped Has white-sorediiferous, It is not sufficiently 
distinct to deserve a separate na: 
58. Peltigera aphthosa, Mudd. Jp. aphthosa, var. leucophlebia, Nyl. Yam 
unable to find any permánent characters whereby to distinguish this from the 
ordinary form. 
61. seid polydactyla, Mudd. P. polydactyla, var. hymenina, Nyl. 
arances which polydactyla assumes arise c E Bes loeal 
sibi and are far too fugitive to be worthy of separate na 
66. Parmelia — var. leucochroa, Mudd. P. sulcata, Nyl. T Yes See 
Manual, page 
© TL Parmelia shakin, Mudd. Parmelia plaeorođia, Nyl- This is not an 
error! The species sent out by me is the Lichen aleurites, Sm. E. Bot. 898, 
~~ ihe len ere of authors, Acharius pase 
Mudd: P. erasperata, a This is only an isidii- 
Tass state of ESSR and unworthy of a separate name even as a variety. 
such: trivial characters are to be regarded as distinctive, then species and va- 
rieties ay ores grub ag without en 
1. yar. ciloantha, Mudd... Physcia stellaris, var.rosulata. 
Nyl. ee specimens in n my copy of Schr. L. H. 353, are identical with those 
smt out in the H. L. B.; fee ER I believe Dr, Nylander is correct. 
Tts chief character is the absence of pruina on its thallus. 
86. Physcia parietina, var. laciniosa, Mudd. P. aliii var. polycarpa, 
Nyl According to Scherer, L. H. 381! I am right. 
91. vein erassa, Mudd. 8. crassa; s var. aaron ai om The charac- 
ters of thi 0 feeb] to distinction. 
103. Prim iesus Mudd. LL. Dan var. saxicola, Nyl. I 
have not the means at og of testing this 
108. Rinodina exigua, var. metaboliga, Mudd. p ‘sophodes, var. teicophila, 
Nyl. R. sophodes is a diim amason having sixteen spores in each ascus, t 
plant sent out by me as “metabolica” has only eight. It is not, w— 
metabolica. What it is at present I cannot ascertain. 
111. Lecanora atra, Mudd. subfusea, var. eoilocarpa, Nyl. From the 
close resemblance of this variety E jeu I fear I have mixed them 
' 218. anora varia, var. denigrata, Mudd. L. varia, var. éepincolés Nyl. 
The specimens in Scheer. L. H. 327 ! are identical with mine; but Dr. Nylander 
- be correct. 
142. Psora Potes. Olraüsbétads, Madd. Lecidea Friesii, ae Another name for 
the same abe: 
CUUCERSET EU E Dye e EDI NS 
