518 DR. LINDSAY ON NEW-ZEALAND LICHENS. 
In herbarium Kew: North Island (Colenso). Resembling var. omphalodes of P. saxa 
tilis, for which it has been mistaken. 
Both Otago and Auckland specimens are sterile and saxicolous forms, exactly resem- 
bling parallel British conditions. 
Genus II. Payscra, Nyl. (Plate LXI.) 
Sp. 1. P. cugysoPHTHALMA, L. (Fig. 10.) [Linds. Spermog. 252.] 
1. On “scrub” (the twigs of shrubs), East Taeri bush, and about the head of Otago 
Harbour, Otago: W. L. L.: sterile, and in fruit; associated with Verrucaria epidermidis 
and other common corticolous lichens. Spores ellipsoid, polari-bilocular ; loculi pale 
yellow, connected by a median, longitudinal, linear septum ; central portion colourless; 
00045” long, 00020” broad. Thecæ 8-spored, 00024” long, 00045” broad. Hymenial 
gelatine beautiful blue with iodine. Thallus occasionally showing patches of white, as in 
British specimens, attributable to decolorization or blanching, not to decortication or 
erosion. Hitherto found only in North Island (Bab. L. N. Z.). 
2. Tarndale, Nelson, apparently terricolous or saxicolous, sterile; Auckland, on twigs 
of bushes or branches of trees, in fruit: both in herbarium of Dr. Sinclair. The Auck- 
land plant has large, prominent apothecia, with few thalline laciniæ, whitish towards 
their bases; a beautiful form. The Tarndale plant has narrow and much divided laciniæ 
of the beautiful vermilion tint of Placodium elegans, DC. 
Sp. 2. P. PARIETINA, De. N. (Fig. 11.) [Linds. Spermog. 250.] 
1. Saxicolous forms. On trap rocks and boulders, top of Kaikorai Hill (1092 ft.), and 
on Saddle-hill; on tertiary grits and conglomerates, base of Saddle-hill; on mica- and 
tale-slate, Otokia Bluff; on slaty traps and trap conglomerates, Ferry-bluff, Clutha 
Ferry; on slaty trap, Shaw's Bay, the Nuggets. 
2. Corticolous forms. On dead trunks of “Gogg” and on living “Totara,” Greens 
land bush: frequent in fruit; majority of forms indistinguishable from the ordinary 
British plant. Minutely laciniose forms (var. lychnea, Nyl) are also common; and 
Lepraria flava, Ach., on “Totara”-bark, Greenisland bush, is probably a rudimentary 
condition of P. parietina. Betweent his leprarioid condition and var. lychnea, and be- 
tween the latter and the ordinary forms of the plant, all gradations occur. Though me 
or less common, especially the saxicolous forms, the plant seems less so than in Britaun. 
As in Britain, it is frequently associated with forms of P. stellaris. In some forms, ap- 
proaching /ychnea, the thallus has a deep vermilion colour, and the apothecia are mostly 
terminal, seated on the tips of the laciniæ. The thallus frequently displays Mr 
shades of green, depending apparently, as in the yellow Sticte, on the degree of moisture 
and light to which the plant has been exposed in its place of growth. Sometimes e 
cortical layer is eroded in patches, exposing the white medullary tissue. The apotheci® 
are sometimes crowded, and of a dull, dark hue. 
"o (a) oblong-ellipsoid, colourless, polari-bilocular, 0008" to 00045” long; 
to 0003" broad. Thecæ (a) 8-spored, -0024” long, -00045” broad. Hymenium beau 
0002" 
