141 
Genus VI. — Celidium, Tul., Mem., 120. Linds., Hist 
Brit. Lichens, 317 ; N. Z. Lich. and Fungi, 448. 
Species 1. C. Stictarum, Tul., 121 ; Hep]), 590 ; Linds., 
Hist. Brit. Lich., 317 ; N. Z. Lich. and Fungi, 
451. 
Syn. Plectocarpon, Fee. 
Sphceria, De Not. 
Lecanora parasitica, Auct. 
Dothidea Lichenum, Smrf. 
Biatora adligata, v. involuta, Fee. 
Sticta pulmonacea, y.pleurocarpa, Ach. ; Seiner., 
Exs., 550. 
Delisea, Fee. 
On apothecia, thallus, or cephalodia of Sticta puhnonaria, 
S. scrubiculata, S. Freycinetii, and Ricasolia corrosa (Korb., 
Par., 456). 
Spores 4 — 8, oblong or ellipsoid, 4-locular, pale yel- 
low or colourless, sometimes becoming brown. Possesses 
spermogonia. Nylander (Prod. 52) refers it to the Fungi ; 
though he points out its affinity to the Arthonice [e. g. A. 
parasemoides and A. abrothallina. 
2. C. fusco-purpureum, Tub, Mem., 121. 
Syn. Spilodium, Mass. 
On Peltidea canina. 
Spores 6 — 8, ovate-oblong, simple, colourless. Possesses 
spermogonia seated in the centre of the cluster of apothecia. 
3. C. varium, Tul., Mem., 125. Korb., Par., 456. 
Syn. Phacopsis, Tul.; Linds., Hist. Brit. Lich., 318. 
On thallus and apothecia of Physcia parieiina. 
Spores 6 — 8, small, oblong, 4-locular, colourless, becoming 
brown. 
4. C. dubium, Linds., N. Z. Lich. and Fungi, 449. 
On sterile thallus of Sticta granulata and S. rubella ; on 
sterile and fertile thallus of S. fossulata. 
Spores unknown ; apparently possesses spermogonia or 
pycnidia. 
5. C. Pelvetii, Hepp, 372 and 589. Linds., N. Z. Lich. 
and Fungi, 450. 
Syn. Sticta aurata, v. abortiva, Scheer., Exs., 558. 
On thallus of Sticta aurata. 
Spores 8, soleaform (2-locular), pale yellow or colour- 
less. It is, perhaps, this species that is referred to (but not 
named) in Hepp, 370, on S. sylvatica , v. Dufourii. 
6. C. furfuraceum , Anzi. 
