286 RICCLZ OF THE EDINBURGH DISTRICT.  [Szss. rxxr. 
rule, where the feeding streams enter—Riccias made their 
appearance in due course, and during the autumn were in 
great profusion. 
Being at the time on the outlook for Hepaticw to submit 
to Mr. S. M. Macvicar in connection with his “census” of 
the Scottish species, I visited practically all our reservoirs 
between the latter part of September and the beginning of 
November for Riccias, which at that season are in good 
condition for determination. Mr James M‘Andrew was also 
in search of them for the same purpose, and on 22nd Sep- 
tember we both gathered Ruccia crystallina, L.—an addition 
to the Scottish list—at Glencorse reservoir, in the miain valley 
of the Pentlands. It was in great abundance on the drier 
portions of the mud-banks from the mouth of the Kirk Burn 
to the top of the reservoir, stretches of a dozen or more yards 
in places being literally covered with it. It occurred also, but 
much more sparingly, at the head of Loganlee reservoir, 
higher up the glen, and at Torduff and Clubbiedean ponds, on 
this side of the hills. I likewise found it at the Burntisland 
reservoir in Fife on 4th October. 
The next best discovery was Hiccia (Rucciella) fiuitans, L., 
which I found on 29th September in profusion at Threipmuir, 
near Balerno, from the bridge above Redford Wood to half 
way down the north side of the reservoir. It was also 
plentiful at the upper end of Harelaw reservoir, which lies 
immediately below the Threipmuir one. Mr. Macvicar has 
only two previous records for Scotland, the later ef them 
from Tentsmuir, dating as far back as 1864. The other was 
from a pond near Alloa. The plant from our reservoirs in 
1905 is the mud form canaliculata. 
Besides the above, three other species, namely, ZR. sorocarpa, 
Bisch.—which is the commorest and most generally distri- 
buted species in this district—Z. glauca, L., and #. Leseuriana, 
Aust. (=. glaucescens, Carr.), were likewise found at the 
reservoirs. In 1868 I gathered a Riccia at one of the 
Pentland reservoirs, and marked it &. glauca, a name which 
had then a wider application than now, and is the only one 
given in our local Floras. I feel sure, however, the specimen 
which I saw not long ago, but have unfortunately mislaid, 
was really sorocarpa. In recent years I have found sorocarpa 
in damp fields and by roadsides, etc., in many localities. 
