502 DR. LINDSAY ON NEW-ZEALAND LICHENS. 
spermogones as plentiful as in the Otago plant, with most of whose characters these 
specimens agree. (Fig. 9.) Spores (5,c) ellipsoid, 1-septate, pale yellow. Thecæ (a) 
largish, blue with iodine. Paraphyses delicate, scarcely coloured at their heads. 
4. Auckland Islands and Chiloé: in herb. Kew. Spermogones abundant and distinct, 
scattered among the apothecia, especially on the thalline rugæ; brown, punctiform, 
seated in or forming palish, papillar, thalline elevations—having thus a subpapillæform 
character. Arthrosterigmata indistinct, granular, irregularly branching. Spermatia in 
myriads, short, straight, rod-shaped. Patches of the cortical layer of the thallus have 
been destroyed by erosion, exposing the bright-yellow medullary tissue. 
In a specimen from New Zealand sent me by Dr. Hooker [sub nom. Sticta flava], in 
fruit (fig. 10), the spores are colourless, fusiform, 1- to 3-septate, tapering and some- 
times subtubular (preparing for germination) at ends. 
Sp. 4. S. UnvinLEr Del. (Fig.11.) [Linds. Spermog. 200.] 
1. On the trunks of dead trees, East Taeri and Saddle-hill bush, Otago: W. L. L.: 
apothecia and spermogones plentiful. 
Spores ellipsoid, 3-septate, pale olive or brown, :0009" to ‘0012’ long., -0003” broad, 
external wall (epispore) sometimes showing slight bulgings (5) opposite the loculi; ends 
of old spores sometimes tapering off into a tube prior to germination (c). Hymenium 
blue with iodine; its constituents closely aggregated and obscured by abundance of 
dark-brown colouring-matter. 
A. Var. flavicans, Hook. & Tayl. [Linds. Spermog. 199.] 
2. On the trunks of dead trees, East Taeri bush, Otago: W. L. L.: in fruit, and sper- 
mogoniferous. | 
Thecæ 8-spored, :0036" long, ‘0006 broad ; with hymenium generally blue with iodine. 
Paraphyses discrete, filiform, united at their tips, which are brown and tuberculiform. 
Thallus smoothish, especially when compared with the following variety; pale buff- 
coloured ; medullary tissue gamboge-yellow, showing itself conspicuously wherever there 
are cephalodia or isidia on, or erosions or fissures of, the cortical layer; lobes sometimes 
multifid. 
3. Chatham Islands : Travers, Jun., from Dr. Müller, Melbourne: in my herbarium, in 
fruit. (Fig. 12.) 
Spores narrowly ellipsoid or fusiform, somewhat variable, especially as to size, 0009” 
long, ‘0001” broad, colourless, 1- to 3-septate (3-septate in old state). Thecæ :0024" to 
*0030^ long, 0006" to -0008" broad, very pale blue with iodine. Paraphyses discrete, 
delicate, filiform, loosely united by pale brownish-yellow tuberculated tips. Hym 
constituents distinct and easily examined in section; hymenium one of the most beau- 
tiful among all the Sticte. The margins of the thalline lobes are copiously and minutely 
multifid. These lobes being also subimbricate, the whole thallus sometimes appear 
covered with squamulose isidioid growths, or it has a furfuraceous or granulose à 
If mere conditions of the lichen-thallus, however marked, when not constant, are to be 
separately designated, this form is entitled to be called and considered variety or For 
