DR. LINDSAY ON NEW-ZEALAND LICHENS. 505 
On trees, Signal Hill, Dunedin: Dr. Sinclair. Otago, N. Z. All in fruit. One of the most 
abundant and handsome Otago Sticte. 
Spores fusiform, straight or slightly curved, colourless, usually 3-septate, sometimes 
|.septate or simple, exceptionally 4- to 5-septate(b), 0015” long, 00025" broad, but varying 
somewhat both in size and form, sometimes elongated at extremities prior to germina- 
tion (c). Thecæ 0045” long, 0009" broad, 8-spored, beautiful pale blue with iodine. 
Paraphyses very delicate, filiform, indistinet, united closely at their yellow tuberculi- 
form heads. Hymenial gelatine and paraphyses not affected by iodine. Apothecia very 
variable, in old state especially ; disk becomes sometimes deep brownish red, or brownish 
black, or pitch-black, variously concave and urceolate, or convex and biatorine, or 
inegular; frequently, also, they are degenerate, the disk being wholly or partly eroded 
or destroyed, or the whole apothecium falls entirely out, leaving only an irregular scar 
or aperture in the thallus, where the apothecium was formerly seated ; margin or exciple 
may be entire and symmetrical, or it may rise above or fall below the depressed or tur- 
gescent disk, or it may become rugose and irregular, or it may disappear, leaving a 
biatorine disk. "Thallus 4 to 1 foot broad, generally more or less smooth, surface ocea- 
sionally roughened by minute granules; colour variable, lemon-yellow to lurid (dark 
blackish brown), herbarium specimens sometimes olive-green or brown; surface some- 
times slightly fossulate, especially towards base; segments sometimes retuse, like those 
of 8. pulmonacea, though generally broadly rounded; edges entire or little divided, 
sometimes erose and laciniate, ragged and irregular. 
Some forms of the Otago plant closely agree with Babington's plate 122 [L. N. Z.], of 
his var. Menziesii. 
Sp.9. S. Dam zcorxıs, Ach. [Linds. Spermog. 194]. 
l In herbarium Kew, sub nom. $. macrophylla, Hook: Now Done 1893: vory 
different from the Irish form. Thallus of a saffron-yellow tinge; apothecia abundant 
but degenerate; disk eroded and whitish, shrivelled ; hypothecium left; no spermogones: 
Java, Lobb (fig. 17), on the other hand, seems exactly the Irish plans gem T 
us about the size of those of S. pulmonacea, smoothish, not fossulate. gave 
iem Spores ellipsoid or fusiform, 1- to 3 (or Fo ids agent 
ng, 0002” broad. Thecæ :0033” long, 0006” broad. | 
The Hookerian i EU contains gu forms, from Rio (Dr. Lyell) br vi 
St Domingo (Schomburgk), Madras, &c. ; which I fail to distinguish from forms oi 9. 
“mulata and S. Freycinetii. i i I 
i the majority of the Sticte, this species is & most variable pe ig Umm 
believe, may be properly made to include several Ne RE A though 
Present regarded as separate species. The colour of the under surface oft s Iri sh spe- 
usually blackish brown or buff, is sometimes, as I have seen it in fruch tin the 
“mens of var. macrophylla Bab. [Killarney, Taylor), ga Et d over it, may 
“uoother, simpler forms of S. Urvillei. The cyphelle, wiih. are A er and 
e or small, distinct or the reverse, and of all shades of — aqua ulose, 
Pen. The under surface of the thallus may also bealmoskcsmooth, or PPS T s 
