DR. LINDSAY ON NEW-ZEALAND LICHENS. 503 
multifida. But I regard such divisions and designations as not only useless, but mis- 
chievous, adding to the existing complexity and confusion of classification by a multi- 
plication of names already excessive. Indeed this so-called variety, flavicans, presents 
in specimens even from the same locality, and much more so from different countries, the 
following variations :— 
Thallus smooth, or fossulate and rugose, or covered more or less with squamules or 
granules; sterile or fertile, the former more generally smooth and paler in colour, the 
latter more usually fossulate and darker in tint; edges of lobes entire or more or less 
divided, becoming squamulose or granulose. Apothecia isolated and few, or crowded, 
peripheral or central on the thallus, or both. Spermogones more or less crowded. 
4. Sub nom. S. flavicornis, 'Tayl. (probably an error for flavicans). Falkland Islands, 
and Hermite Island, Cape Horn: Dr. Hooker, Antarct. Exped. : in my herbarium. Her- 
mite-Island specimens (fig. 13) have the characters partly of $. Urvillei, of its var. 
Colensoi, and of S. orygmæa. Thallus very rugose and fossulate, edges of lobes much 
curled and subsquamulose or granulose. Spermogones abundant, scattered about peri- 
phery of thallus as blackish-brown dots, generally depressed; in the old state irregular 
in form, radiate or stellate (ostioles) ; the internal walls consist of closely aggregated irre- 
gular arthrosterigmata, resembling those of S. orygmæa. In Falkland-Island specimens 
spermogones are less plentiful but also peripheral, more distinct, from the paler colour 
ofthallus, more generally seated in the centre of slight thalline papille with flattened 
apex, the ostiole being subdepressed and brown-punctate. 
B. Var. Colensoi, Bab. [Sticta Colensoi, Bab. L. N. Z. p. 10, pl. 123. | 
5. Associated with var. flavicans, East Taeri bush, Otago: W.L.L. Differs chiefly in 
its thallus being much roughened and obscured by yellow isidia. 
6. Sub nom. Nephroma cellulosa, Ach. Hermite Island: Dr. Hooker, Antarct. Ex- 
ped.: in my herbarium: seems referable here; sterile. It has probably been so labelled 
and associated by mistake, and is really a New-Zealand plant. 
Specimens of S. Urvillei, from the Straits of Magellan, are infeste 
a mea, Nyl. : vio 
Tam Eus imt there is sufficient ground for distinguishing S. pures = e : 
"Jj! as separate species, nor flavicans and Colensoi as ‘separately ype 
are generally abundantly spermogoniferous and nap wit 
much divided at their edges into squamules of varying size and 
d by the parasitic 
character. 
8.5. 8, DISSIMULATA, Nyl., var. multifida, Laur. (Fig. 14) [Nyl. L. P = E 4 * 
E On the trunks of dead trees, East Taeri and Saddle-hill bush, Otago: 
5 . vary in form from broadly 
Spores ( f) *0009^ to 0015” long, 00025” to 00045 broad ; d e in old state 
Psoid or oval-oblong to fusiform; in young state simple oF (e D 0024” to “0036” 
b es 3-septate; olive or brown, according to pn pe Ma or beautiful blue 
> 0006" to ‘0009 broad ; 8-spored ; with DE vat gem yellowish-brown 
' lodine (4). Paraphyses(5) discrete, filiform, - r 322 
