324 Proceedings of Societies. 
systematic affinities. I have yet, however, another case to state, in which 
we are afforded an illustration of this reciprocal action of species. It 
occurred with the Mawillaria atro-rubens and M. squalens. On the 
former of these I had made numerous attempts to fertilise flowers with 
their own pollen, yet in every case they proved abortive. I was thus 
induced to try pollen from another species. I accordingly took a few 
pollen-masses from flowers of M. squalens—certainly a very dissimilar 
species, but the only one in flower at the time—with which I fertilised 
eight flowers of M. atro-rubens. These have afforded me very successful 
results, as six out of the eight have produced well-formed capsules. I 
next tried pollen from M. atro-rubens upon a flower of M. squalens, and 
have now succeeded in fertilising a capsule on the latter also. J may 
remark, however, that I have found this species perfectly productive when 
fertilised with its own pollen. 
III. On some New British Lichens. By the Rev. T. Satwey, B.D., 
Vicar of Oswestry, and formerly Fellow of the Linnean Society. 
The following is a list of the Lichens described :-— 
1. Aspicilia aquatica, Koerber. 2. Lecidia fusco-rubens, Nyl. 3. Le- 
cidea lecanorina, Nyl. (Mischoblastia lecanorina, Massalongo.) 4. 
Lecidea lithophila, Ach.; Nyl. Lich. Scand., p. 226. 5. Lecidea tes- 
sellata, Florke. 6. Lecidea Pheeops, Nyl. 7. Squamaria galactina, 
Pers. 8. Verrucaria ruderum, DC.; FI. Fr., p. 318. 9. Verrucaria 
ethiobola, Wahl. (V. margacea, var. 1, ethiobola, Nyl.) 10. Verru- 
caria virens, Nyl. in Bot. Notes, 1853, p. 180. 11. Calicium trajectum, 
Nyl., nov. sp. 
IV. Synopsis of the Canadian Species of Equisetum. By Guroree 
Lawson, LL.D., Professor of Chemistry and Natural History in the 
Queen’s University of Canada. 
The author gave descriptions of the species and their localities under 
the following sections :— 
Section I. Stems annual, the sterile ones bearing verticils of soft 
green herbaceous branches; the fertile stems either evanescent and 
naked, or permanent and ultimately clothed with similar verticil- 
late branches. 
1. #. sylvaticum. 2. E.umbrosum. 3. H. arvense, and B. granulatum. 
4. HE. Telmateja. 5. EH. limosum. 
Section II. Stems perennial, silicious, not ,verticillately branched. 
6. E. hyemale. 7. EL. variegatum. 8. E. scirpoides, and 6. minor. 
V. Register of Plants in Flower in the Open Air at the Royal Botanic 
Garden (4th List). By Mr James M‘Nas, Curator. 
The following shrubs and trees were in flower on the 20th day of April 
1863, and they have not been enumerated in any of the previous lists laid 
before the Society at the above date :— 
Pyrus Malus Syringa persica Forsythia viridissima 
Prunus Padus Crategus praecox Medicago arborea 
Syringa vulgaris Sambucus racemosa Kalmia glauca 
