NEW LICHENS FROM TUE CAPE or GOOD HOPE. 19 



determined for me, and from whoso notes, previous to the publication 

 of a detailed report, I extract the following short diagnoses. 



1. Parmelia suhcsquaiis, Nyl. Similar to P. JBorreri, of which it 

 may perhaps be only a variety, though differing in the receptacle of 

 the apothecia being firmer and not soredioso-dissolved. The margin of 

 the receptacle in the younger apothecia is radiately sphinctrino- 

 striated. Corticole. 



2. Parmelia molyhdaa, Nyl. Allied to P. atrichoides, Nyl., but 

 having the thallus smaller, leaden-coloured, more adnato, with the 

 apothecia lecanorine. Saxicole. 



3. Parmelia comtrictans, NyL Probably a subspecies of P. con- 

 spersa, from which it is distinguished by being smaller, stenophyllous, 

 and having the lacini^e here and there somewhat constricted. Terricole. 

 Var. eradicaia, Nyl., has the thallus still smaller, thinner, the lacinite 

 ascending, glabrous also beneath. Muscicole. 



4. Parmelia compersula. Nyl. Thallus adnate, areolato- diffract in 

 the centre ; apothecia lecanorine, small, the thalline margin thin, en- 

 tire. Looks somewhat like small P. conspersa. Saxicole. 



5. Parmelia adhaircm, Nyl. Sufficiently similar externally to 

 Squamaria saxicola * diffracta, Ach., but in reality a true Parmelia (as 

 is at once evident from the character of the spermogones), allied to P. 

 Mougeotii, Schaer., to which in habit and colour it bears considerable 

 resemblance. Medulla K+yellow. Apothecia small, lecanorine, 

 with entire thalline margin ; spores ellipsoid ; spermatia thinly fusi- 

 form. Saxicole. 



6. Parmelia squamariata, Nyl. Thallus olive or chestnut-olive, 

 appressed, adnate, indistinctly radioso-divided, crenato-incised at the 

 circumference, where the lacinire are rather more distinct (medulla 

 K-|-, from yellow becoming cinnabarine) ; apothecia spadiceous, 

 minute, lecanorine ; spores ellipsoid ; spermatia acutely fusiform. 

 Saxicole. 



7. Parmelia prolixula, Nyl. This species approaches in general 

 appearance to P. Dregeana, Hmp., from which, however, as well as 

 from P. stygiodes, Nyl., it is at once seen to be different from the 

 oblong form of the spores. The apothecia are sublecanorine with sub- 

 entire margin, and the spermatia are aciculari-fusiform. Saxicole. 



8. Parmelia lichinoidea, Nyl. Thallus subsimilar to that of P. 

 lanata, but deplanate, the lacinise depressed (medulla K — ). Seen only 

 in an infertile state. Muscicole, 



9. Physcia affi,xa, Nyl. Somewhat similar to Ph. obsctcra, f. lithotea, 

 but thinner, more appressed, and adglutinated to the substratum. 

 The thallus is chestnut-brown, subgranulato-unequal, and areolato- 

 diifract in the centre, laciniato- radiating at the circumference. Saxi- 

 cole. 



10. Physcia suhpicta, Nyl. Distinguished from Ph. picta and Ph. 

 cegialita, Ach., by being smaller, and having the thallus glaucous- 

 white, opaque, smoother, the lobules being plane and shorter at the 

 circumference. Infertile. Saxicole. 



11. Lecanora suhunicolor, Nyl. Allied to L.fulgescens, but having 

 the thallus thinner, vitelline orange -coloured, smooth, rimulose ; 

 apothecia orange, biatoroid. Saxicole. 



12. Lecanora cinnahariza, Nyl. This differs from L. cinnabarina, 



c 2 



