LINDSAY, ON POLYMORPHISM IN LICHENS. 7 



V. atomaria. Sperinatia and Sporidia in same 

 Perithecium. 

 I made apparently tlie same observation in Spharia Lind- 

 sayana, a New Zealand species ;* and Gibelli, in Italy, re- 

 cords the occurrence of Spermatia in the asciferous Perithecia 

 of several Veri'ucaria.'f 



II. Genus Arthonia. 



A. cinereo-pruinosa. Two or more forms of Sper- 



mogonia. 

 A. pruinosa. Pycnidia. 



,, var, Spilomatica. Two forms of Stylo- 



spores and Basidia. 

 A. asti'oidea. Spermogonia and Pycnidia. 



„ var. Sivartziana. Two forms of Stylo- 



spores and Basidia. 



III. Genus Opegrapha. 



O. herpetica, O. vulgata. Two or more forms of 



Spermogonia. 

 O. atra, O. varia. Pycnidia. 



IV. Genus Lecidea : 



L. parasema,L. drijlna. Two forms of Spermogonia. 



Li. luteola, L. petrcea, L. anomala, L. disciformis, 

 L. albo-atra, L. Cladoniaria. Spermogonia and 

 Pycnidia. 



L. entcroleuca. Pycnidia in lieu of Sj)ermogonia. 



L. abietina. Pycnidia, and two forms of Spermo- 

 gonia. 



L. flexuosa. Pycnidia. 



* " Observations on New Lichens and Fungi of Otago, N. Z.," ' Trans, of 

 Royal Society of Edinburgh,' vol. xxiv, p. 423, pi. xxx, figs. 1 — 7. 



f Dr. Giuseppe Gibelli, of Pavia, " Sugli Org. reprod. del. Gen. Verru- 

 caria" ('Mem. Soc. Sci. Nat. Ital.'), quoted in "Notulse Lichenologicse " 

 of the Rev. W. A. Leighton ('Annals of Nat. History,' April, 1866, p. 270.) 

 He asserts — though his statement is contradicted by other lichenologists 

 {e.ff.y by Nylander, 'Plora,' 1865, p. 579) — that in a number of Ferriicariee, 

 especially those with simple spores and no distinct paraphyses, — i.e., all saxi- 

 colous species — there are no separate spermogonia, but the upper portion of 

 the asciferous perithecium is lined with sterigmata bearing spermatia. He calls 

 this spermatigerous apparatus, when enclosed in an asciferous perithecium, 

 a '\Spermatokalium: "and he describes V emicarm as hermaphrodite y^h^re the 

 spermatokalia constitute a fringe in the upper part of the peritliocium impend- 

 ing over the asci, and their sporidia. On the other hand, he designates Ver- 

 rnccma, which have separate spermogonia and distinct paraphyses, 

 dicinons. All the saxicolous species belong to the former category, and the 



crticolous to the latter. A very convenient generalisation, if it he founded 



nfact ! 



