312 WILSON’S OBSERVATIONS. 
nearly round, dotted or roughish. I can perceive no bitter 
taste in the plant. 
22. Equisetum variegatum. Cultivated. Stem with 6 or 
8 furrows, the ridges or angles also furrowed. In each of 
the principal furrows are two rows of prominent dots. 
23. Isoetes lacustris. Ftynnon frech, Snowden, June, 
1828. In the anther the oval grains were some of them 
Opaque, some pellucid, the latter probably abortive. I 
counted ten columnar receptacles in one cell extending from 
back to front. In the capsule I could not find that the seeds 
were combined, nor had they any trace of a stalk, they split 
into 4 portions, and are winged at the sutures. Each 
capsule contains from 20 to 40 rough seeds. Immediately 
above the anther and capsule, on the inner side of the fronds 
is found a rounded membranous scale with a depression at 
its base, and there is a communication between this part and 
the back of the capsule or anther. In one instance the scale 
was double. The male and female fronds are placed without 
any order, the former are as often found outside as in the 
centre of the bunch of fronds. Fronds, in this situation, 
erect, with 4 longitudinal cavities, Root of many simple or 
forked simply tubular fibres. 
Specimens growing in Llyn y Cwn had the fronds spread- 
ing, flattened and dilated below, and much shorter, (2 inches 
long,) the plants appeared to be dicecious. 
SUPPLEMENT TO THE REMARKS ON THE 
ENGLISH FLORA. 
By W. Wirsow, Esq. 
15th May, 1830. 
Vol. I. of Engl. Fl. 
. 1. Pinguicula Lusitanica. Near Killarney, &c., August 
1829. RHootfibrous. Leaves notched at the extremity. Cor- 
