EEEE NIESE R à St LS la une m 
DR. LINDSAY ON NEW-ZEALAND LICHENS. 515 
those of P. tiliacea; they are abundant, scattered among the apothecia, minutely sub- 
papillæform ; ostiole black or brownish black ; body brownish black, immersed. Sper- 
matia in myriads, very delicate straight rods or needles, 0002" long, 00005” broad, 
on delicate, narrow, jointed sterigmata about :0009" long, from among which project : 
into the cavity of the spermogone elongated delicate filaments (a), with rounded, some- 
what thiekened ends, subramose and resembling those of many other Parmeliæ (Linds. 
Spermog., plates xi. & xii.). These spermogones are in all respects of true parmelioid type. 
6. Var. revoluta, Flk. (Fig. 7 b-h.) 
On twigs, Auckland: Dr. Sinclair: in my herbarium, in fruit. Indistinguishable, 
save as a form (and that not a constant or distinct one) from the type. Spores (f-h) ob- 
long-oval or subspherical, colourless, simple, margined in maturity, variable somewhat 
both as to form and size, 0003" to :00045” long, *00025" broad. Thecæ (d) 8-spored, 
blue with iodine, 0021" long, *0006" broad. Paraphyses delicate, indistinct, agglutinated 
at their tips, which become yellow under iodine(c) . Hymenial gelatine blue with 
iodine (d, e, h) ; the hymenium in section (b, e), especially under iodine, is extremely beau- 
tiful, and furnishes an excellent illustration of the structure of the parmelioid apo- 
thecium, exhibiting :— 
1. The agglutinated tips of paraphyses, yellow (c). 
2. The bodies of the filiform paraphyses, colourless (d). 
3. The thecæ of different ages and sizes, blue (d). 
4. The hypothecial cellular tissue, pale brownish (e). 
Sp. 6. P. CONSPERSA, Ach. (Fig. 8.) [Linds. Sperm. 231.] 
l. Copiously coating the basaltie cliffs in various gullies of the Greenisland hills; 
common on basaltic blocks strewn over the hills about the Forbury, Dunedin ; on Signal- 
Will, North-east Valley, Dunedin ; on Saddle-hill and Kaikorai Hill—on basalt i» situ on 
the two latter hills up to their summits (1565 and 1092 feet); on slaty traps and trap 
conglomerates, Ferry bluff, Clutha Ferry; on slaty basalt, Kapuwaka Creek, Finegand 
Station, Lower Clutha; and generally one of the most common lichens on basaltic or 
trappean rocks and boulders in the eastern districts of Otago; equally — however, 
on tertiary sandstones, grits, and conglomerates, in the Tokomairiro district, and er, 
Saddle-hill, —as well as on the metamorphic slates (gneiss), Tuapeka, (mica-slate) neca 
hills, (tale-slate) Otokia bluff, Saddle-hill. The plant occurs in equal a 
‘permogoniferous, and sterile: frequently isidioid or sorediiferous ; eres 8 
(e. g. in Greenisland specimens) the parasitic Abrothallus BP, Tul. m" 
Spores (fig. 8) oblong-ellipsoid, simple, colourless, margined in pepe dite Hyme. 
00025” broad. Thecæ 8-spored, 0009” to 0012” long, *0003” to "0006 coin 
nium blue with iodine ; its constituents (paraphyses and thecæ) pommes one D da 
ray resembling that of the British plant (e. g. in regard - the veg ya er 
inim, the smoothness of the surface, or its covering with isidia) ; P 2 ‘bd in 
able, becoming, on the one hand, broad-lobed and smooth, n into Ehe ie 
on the other, minutely laciniate, passing into P. Mougeottu. Frequently 
i xix. fig. 6. 
* Linds. Obs. Otago Lich. & Fung}, P. 410, plate xxix. "g 
