514 DR. LINDSAY ON NEW-ZEALAND LICHENS. 
Gully, Tuapeka, Otago : W.L.L. Saxicolous forms are generally sterile, with sometimes 
marginal black cilia (as in P. perforata) and lateral globose soredia. 
2. Var. sinuosa, Sm. Occurs occasionally intermixed with the type in saxicolous forms 
in Otago; common at Tuapeka ; on basaltic blocks, flanks of Kaikorai-hill, near Dunedin: 
sometimes in fruit, more frequently sterile, seldom distinctly isidioid or sorediiferous, 
3. Var. sinuosa, Sm., (sub nom. Parmelia sinuosa, Xm., var. relicina, Fr.) in herba. 
rium Kew, from Wallanchoon, Sikkim, reg. temp., 10,000 feet: Dr. Hooker: sterile. 
Thallus and its soredia (which are terminal or peripheral, and prominent) lemon-yellow. 
One specimen, devoid of soredia, has bullose dilatation of one of its lobes, bearing, and 
probably produced by the growth of, a parasite, whose general habit is that of Abro- 
thallus oxysporus, Tul., but whose spores are rather those of A. Curreyi, Linds. The 
thalline bullosity is similar to what occurs sometimes in Parmelia conspersa, P. olivacea, 
and Platysma glaucum, L.*, when they are affected by the parasitie Abrothallus oxy- 
sporus. The apothecia of this interesting form of Abrothallus Curreyi (interesting as an 
important connecting link between the species of Abrothallus which have simple and 
those which have bilocular spores) are flat, dark brown when dry, beautiful light chest- 
nut when moistened. Thecæ broadly obovate superiorly; 00133" long, 00066" broad. 
Spores (fig. 37) crescent-shaped, generally more curved than in Ramalina; typically 
bilocular ; in the mature spore the loculi, as in Ramalina, occupy nearly the whole cavity 
of the epispore, being separated only by a narrow linear septum; in the young state 
polari-bilocular, or subphyscioid, as in various of the Sticte t; 0005” to 00066" long, 
“00020” to 00025” broad. In their bilocularity they resemble the spores of New-Zealand 
forms of A. Curreyi; but they differ in their curvescence, and somewhat also in their 
form. In the absence of colour, and in their form (save their curvese e), they also 
approach the characters of those of the British and New-Zealand forms of A. oxysporusį. 
4. Var. reticulata, Tayl., (sub nom. Parmelia reticulata, Tayl., or P. sinuosa, Sm., var. 
reticulata, Tayl.) in my herbarium, and in herbarium Kew. New Zealand: Dr. Hooker, 
Antarct. Exped. : sterile, but bearing a few spermogones about the ends of the laeinit, 
similar in external appearance to those of P. saxatilis$. Laciniæ broadish, sometimes 
minutely digitate, tipped with well-marked soredia, margins and under surface generally 
black-fibrillose, though sparingly. "Taylor's P. reticulata is neither good as a species 
nor as a variety; it is a mere cracked condition of a subcoriaceous thallus, which may 
occur in saxicolous exposed forms of P. perforata, P. perlata, or P. levigata. Accord- 
ing to my examination of the suite of specimens in the Kew herbarium, it is mostly re 
ferable either to P. perlata or P. levigata. P. reticulata, Nees, is a different plant, ? 
Cape species, referable to P. Hottentotta, Ach. 
5. Var. revoluta, Flik. (Fig. 7«.) [Linds. Spermog. 218.] 
On branches of trees, Saddle-hill bush, Otago: W. L. L.: associated with Usnea gi 
bata, Fr., var. ceratina, Ach. : spermogoniferous. Spermogones externally resembling 
"I: [1 . : jence, 
| Linds. “ Monograph of Abrothallus (with two coloured plates), Quart. Journ. of Microscopical ma 
January 1857, fig. 9, pp. 13-16. 
T Section on the New Zealand Stiete in the present paper, Plate LX. figs. 1, 2, 3, 6, 19. 
t Obs. Otago Lich. & Fungi, p. 410, plate xxix. fig. 6. è $ Lindsay, Spermog: 210, 217: 
