DR. LINDSAY ON NEW-ZEALAND LICHENS. 
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Genus XII. THAMNOLIA. 
Sp. 1. T. vERMICULARIS, Ách. 
Tarndale, Nelson (Dr. Sinclair): in my herbarium: sterile, but bearing traces of the 
parasitic Microthelia vermicularia, Linds. (Spermog. 143, plate v. figs. 19, 24, 25, and 
Obs. Otago Lich. and Fungi, p. 441). The plant differs in no respect from Scotch alpine 
specimens in my herbarium (from Lochnagar and Ben Lawers). 
In Dr. Sinclair’s herbarium, at Auckland, I found specimens both of the type and its 
form or var. taurica, Ach., from the Dun Mountain, Nelson—as usual, not in fruit. The 
apothecia are extremely rare, if they have ever been really found. Massalongo, how- 
ever, describes them (in * Flora,’ 1856, p. 234); and Mudd (June 1865) informed me of his 
having also discovered them*. 
Genus XIII. STEREOCAULON. (Plate LXII.) 
Sp 1. S. RAMULOSUM, Ach. pr. p, Nyl. (Fig. 1.) [Linds. Spermog. 153, plate vi. 
figs. 277-32. | | 
In erevices of the basalt, Greenisland Bluff: spermogoniferous. 
Specimens in my herbarium from Tasmania (fig. 1) and New Zealand, collected by 
Dr. Hooker during the Antarctic Expedition, are identical, apparently, with the Otago 
plant. Spores (d,e) sublinear or narrowly fusiform, 3-septate. Thecæ (5) shortish, 
8-spored, blue with iodine. Paraphyses (a) discrete, with pale-brown, distinctly knobbed 
heads. Podetia studded over with cephalodia, which resemble large, pale, shrivelled 
abortive apothecia, sometimes terminal on the lateral branchlets; their structure, which 
is that of the thallus, at once demonstrates their true character. 
In my herbarium is a suite of specimens, labelled S. argus, Tayl, from Campbell's 
Island (Dr. Hooker, Antarct. Exped.), sent me by Dr. Hooker in 1856. Microscopic ex- 
amination enabled me at once to divide them into two groups :—the one possessing very 
large muriform spores, like those of Umbilicaria pustulata or Lecanora chrysosticta, and 
l-spored thecæ, referable to what Th. M. Fries has subsequently described as à separate 
genus and species, Argopsis megalospora t; the other having the spores and thecæ of 
Stereocaulon, though the former are larger than usual. The latter group is referable either 
to var. microcarpum, Bab. (Nyl. Syn. 236), of S. ramulosim, or to the more common 
forms of that species. Spores (fig. 2) much mixed with oil-globules (d), linear-oblong, 
sometimes broader at one end, colourless, variable as to size, 6-septate, sometimes 9-sep- 
tate (e); in the latter case they are much smaller than when 6-septate, and, indeed, I 
some cases are evidently half-spores, the result of subdivision after emission from the 
thecæ. Thecæ 8-spored, largish (b). Paraphyses (a) discrete, with tuberculated brow? 
tips. 
Sp. 2. S. MIxTUM, Nyl. 
On trap boulders, south shoulder of Kaikorai Hill, Otago: W. L. L. : spermogonifer 
* Compare his * Monograph of British Cladonize' (1865), p. 35. 
: x Mo.ographia Stereocaulorum et Pilophororum," Nova Acta Regiæ Societatis Scientiarum Ups 
vol. ii. 1856, pp. 307, with four 4to plates. 
aliensis, 3d ser 
