BOTANICAL APPENDICES. 283 
Lichens. 
Lecanora hypocrocina , Nyl. 
L. caesio-rubella, Ach. 
L. pallescens, Fr. 
Lecania punicea , M uell. -Arg. 
Callopisma cinnabarinum , Muell.-Arg., var. opacwn , Muell.-Arg. 
C. zambesicum , Muell.-Arg. 
C.flavum, Muell.-Arg. 
Rmodina conspersa, Muell.-Arg. 
Pertusaria velata, Nyl. 
P. xanthothelia, Muell.-Arg. 
P. mamillana, Muell.-Arg. 
Lecidea russula , Ach. 
L. ?mitabilis, Fee. 
L. wnpressa, Keplh. 
Patellaria leptolytra, Muell.-Arg. 
Blaste?iia poliotera, M u ell. - Arg. 
Buelliaparasema, Korb., var. disciformis , Th. M. Fries, var. vulgala, Th. M. Fries. 
B. africana , Muell.-Arg. 
B. olivacea, Muell.-Arg. 
B. inquilina, Tuck. 
Opegrapha Menyharthii , Muell.-Arg. 
Arthonia dispersa, Nyl. 
Mycoporwn pycnocarpum, Nyl. 
Placothelium staurothelioides, Muell.-Arg. 
Trypethelium Eluteriae, Sprgl. 
Lepra citrina, Schaer. 
Usnea barbata, Ach., var. ceralina, Schaer. (2) Carson. 
Physcia speciosa, Ach., var. hypoleuca , Nyl. (2) Carson. 
Algae. [All from (1 ?) Lake Nyasa (Laws), except the first.] 
Chara sp. (2) Carson. 
Conferva sp. ? 
Bulbochaete parvula, Ktz. 
Spirogyrapallida, Dickie. 
Cosmarium margaritiferum , Turp. 
Cylindrospermwn Nyassae, Dickie. 
Lyjigbya martensiana , Menegh. ? 
Oscillaria sp. ? 
Cyclotella rotula , Ktz. 
C. operculata , Ktz. 
Epithemia ventricosa , Ktz. 
E. Zebra , Ehb. 
E. alpestris , Sm. 
E. Sorex, Ktz. 
E. lurgida, Ktz. 
E. elavala, Dickie. 
Eunotia tridentula , Ehb. 
Himantidiwn pectinate, Ktz. 
Cocconema cymbiforme, Ehb. 
C. Cistula, Flemp. 
