without microscopic examination in other herbaria. 
Argopsis AJtgus (Hook. f. & Tayl. ) Dodge, comb. nov. 
, V ; -.it ' , V' 
Stereocaulon Ar gus Hook, f. & Tayl., London Jour. Lot. 3:653. 1844; 
Cryptog. Antarct. SSA. 1845; FI. An tare t. : . 184 
■p/'\ . ... , ... „ \ ' : •*-.*>. •**. / ■/’ "■ •.,«• _ a 
A rgopsi s megalos^ora Th. Fr ., Leva Acta H. Soc. 8ci. Upsal. III. 
2:o25. 1858. 
\ 
Type: Campbell Island, on rocks on mountains, J. D. H ooker (Voy. 
Erebus Sc Terror in Taylor Herb, at boston Soc. Hat. Hist. Type of 
A. m eg al ospo ra based on a duplicate of this collection in Upsala. 
The sheet marked 11 Stereo caul on Argu s Tavl," contains four plants glued 
to the sheet. 7/hen thev were studied by Muller Argau in 1887, he letter¬ 
ed the plants "a" and "b" and annotated the sheet; a,. Argop si s me gal o - 
soora Th. Fr.; b. Stereoc a ulon ramulosum v. macrocarpum Lab. Hyl , 
The following description is based on the two individuals marked a 
by Muller Argau. The confusion is not surprising as the specimens 
resemble each other very closely in macroscopic characters, having the 
same type of branching and phvllocladia. The primary branches of Argog - 
s_is are somewhat flattened, the cephalodia are much less conspicuous and 
darker in colour, the exciple is verrucose 4hd the disc tenus to remain 
flatter; all characters which would hasre been*, considered trivial in 
Taylor’s time. Tavlor, however, mentions all 'these characters in his 
\ 
description although all his specimens do not show them. 
Thallus 4-5 cm. tall, branching near the base, closelv dichotomous, 
appearing sympodial, base 2.5 mm in diameter, somewhat flattened and 
obscurely striate sulcate longitudinally; decorticate, smooth, secondary 
branches more terete, verrucose, the verrucae passing into short, terete 
obtuse . , 
phvllocladia, cortex dull and peeling off, leaving a slightly tomentose 
surface; cephalodia not abundant, small, cerebriform, of the Stereocaulon 
ramulosum type. 
