552 DR. LINDSAY ON NEW-ZEALAND LICHENS. 
a general resemblance to certain forms of L. petræa, on the one hand, and Z. lapieida 
(var. declinans) on the other. 
Var. meiospora, Nyl. (Fig. 26.) 
On hardened mud or clays, Great North Road, about two miles from the town of 
Auckland: W.L.L. Abundant; athalline, or nearly so. Spores oblong-ellipsoid, simple, 
colourless, 0006" long, ‘0003" broad; in the young state, and within the thecæ, sub- 
angulous from mutual pressure, as is general in lichen-spores. Thecæ 8-spored (spores 
arranged in one or two rows), ‘0024" long, 0006" broad. Paraphyses-tips indistinct, 
very dark brown. Hymenium beautiful deep blue with iodine. 
Sp. 16. L. LAPICIDA, Fr., var. declinans, Nyl (Fig. 27.) 
On tertiary grits and conglomerates, base of Saddle-hill, Otago: W.L.L. Hasa 
general resemblance to forms of L. contigua (var. crustulata), and L. parasema. Apo- 
thecia generally thin, flat, frequently erowded or confluent, and subangulous or difform, 
with a sinuate or crenulate border; conspicuous on the thin, white, smoothish areolate 
thallus. As compared with var. erustulata of L. contigua, the thalline areolz are much 
smaller, while the apothecia are larger and more erowded, more than one being fre- 
quently seated on the same areola. 
Spores oblong-ellipsoid, simple, colourless, -00025” long, ‘00015” broad. Hymenium . 
blue with iodine, but constituents indistinct; hence one of the worst species in which 
to study the anatomy of the apothecium in the genus Lecidea. 
In herbarium Kew is a specimen from the North Island (Colenso), which may be 
referable to the type rather than to var. declinans. 
Sp. 17. L. rusco-arra, Ach. 
On basalt, south peak of Saddle-hill ; on rocks subjacent to the trap tuff, Government 
coal-pit, Serogg's Hill; on basaltic boulders, top of Kaikorai Hill; on trappean rocks, 
Shaw's Bay, Otago: W. L, L. Quite the British plant. Hymenium deep blue vith 
lodine, but constituents very indistinct, so that neither spores nor thecæ (both of which 
are small) nor paraphyses (which are closely aggregated) were satisfactorily Seen. 
The spores, indeed, of this species, like those of several of the Cladonie, notwithstand- 
ing the abundance and prominence of the apothecia, are seldom distinctly seen in T 
cimens from any part of the world. In herbarium Kew there are Scotch specimen 
from Don, 1805 (sub nom. L. Jumosa, Ach.), with broadly ellipsoid, simple, colourless 
spores, 0004" long, and 0002” broad, and very delicate filiform paraphyses. 
Sp. 18. L. coARCTATA, Ach. | : 
On basaltie boulders, Stoney Hill, Otago: W.L.L. Contains no spores, but agrees I7 
external characters with specimens in Scherer’s Exs. 312, and in my herbarium (on ye 
rocks, Kinnoul Hill, Perth). In herbarium Kew there is also a specimen referred 
the type, from the North Island (Colenso). 
Var. exposita, Nyl. (L. N. Z. 254; Linds. Obs. Otago Lich. and Fungi P- 413, pla? 
xxix. fig. 12), occurs on tertiary grits and conglomerates, base of Saddle-hill, Otago. 
