R. H. Howe: LINNAEAN NOMENCLATURE OF UsNEA 607 
ences, the second, refers to an Alectoria, does not invalidate the 
name or embarrass the situation. 
No. 72, Lichen barbatus, was found by Wainio to be represented in 
the Linnaean herbarium by a specimen referable to ‘‘Usnea articu- 
lata Hoftm.’’ Hoffmann, however, himself referred* to Dillenius’ 
figure (pl. zz. f. 4), which is of typical articulata as we now 
understand the species, and the one referred to by Linnaeus under 
the latter’s articulatus; whereas Hoffmann under his own barbata 
referred to Dillenius’ figure (pl. 12. f. 6), again following Linnaeus. 
There seems no doubt that Linnaeus’ original description of the 
1753 edition, copied from his Flora Suecica, no. 985,¢ did not refer 
to his no. 79, Lichen articulatus, of the 1753 work, and that we must 
turn to his Dillenian reference (the third) and leave it to the only 
plate cited to settle the question. This plate we have already 
found, was, according to Crombie, of an existing specimen refer- 
able to ‘‘Usnea dasy{o|poga (Ach.)’’ for which the name barbata 
must stand. The ‘type’ locality given is also very significant. 
It has been my opinion that Lichen barbatus (= Usnea barbata 
d. dasypoga Fr.) represents a subspecific rather than a specific dis- 
tinction, and I therefore proposed the combination Usnea plicata 
barbata (L.) R. H. Howe, Jr. No doubt some will prefer to claim 
for it specific rank, and for many nomenclatural reasons this would 
be the best elucidation. 
No. 77, Lichen hirtus, Wainio tells us, has a composite repre- 
sentation in the Linnaean herbarium. He writes ‘77. Lichen hirtus 
(984) = Usnea barbata var. glabrescens Nyl. in Wainio, Lich. Vib. 
p. 46 (versus v..dasypogam Ach. vergens).—L. hirtus = 2 specim. 
Usneae barbatae var. dasypogae Ach.—77. = Usn. barbata var. 
dasypoga (Ach.) lusus.’”’ This would seem to argue that Lichen 
hirtus had better be considered a synonym of Usnea barbata 
rather than of Usnea florida as I heretofore referred it. There is 
little doubt, however, that Linnaeus’ diagnostic word “‘erectus,”’ 
and the Dillenian figures referred to, place Lichen hirtus as a 
synonym of Usnea florida (or vice versa), a name after all given 
only to the varying sterile conditions of the latter plant. 
*Deutschlands Flora 2: 133. 1795. 
+Patentissimis of the Flora Suecica reads patentibus in Species Plantarum, 1753. 
