324 G. Claridge Druce. 
abundant at the Trossachs 87 and at Killarney. A carpet-like 
sheet consisting almost entirely of H. peltatum 3 feet long by 18 
inches was cut from a rock (where there was great abundance of it) 
for a museum specimen by Professor Schroeter. 
2922. Pilularia globulifera L. Killarney. “ Sparingly at the 
south end of Upper lake” Cybele Hibernica. This year with the 
lower water level the shore of the lake and of some stretches of the 
Upper Range were covered with a turf of this species; the different 
more yellow-green colour contrasting with similar expanses of 
Littorella, which were also exposed this year from the same cause. 
2923. *Azolla cciroliniana Willd. In great abundance and 
fruiting freely near a garden at Woodbastwick, E. Norfolk 27, and 
also plentiful in brackish water near Queenstown Junction, Co. 
Cork 5, having spread from Mr. Beamish’s adjoining garden. 
Incomplete as the foregoing account of the floristic results 
of the International Phyto-Geographical Excursion of 1911 
avowedly is, yet it contains much that is exceedingly interesting to 
the student of the British flora, while it emphasises the importance 
and desirability of more combined and critical work at the constituents 
of our flora than British botanists have hitherto given, and at the 
same time shows that even the more frequented areas have not yet 
yielded all their floristic secrets. 
It may be desirable to give in fuller detail the actual additions 
to the British flora which were made on the expedition, bearing in 
mind, however, that in some instances the plants had already been 
distinguished, but not by the more correct name. Other cases are 
awaiting the results of a more complete examination. 
Additions to the British Flora. 
77 (2). Castalia alba Wood var. Candida (Presl). Syn. C. 
Candida Schinz & Thellung, FI. der Schweiz, 1909. Nymphcea 
Candida Presl, J. & C., Delic. Prag. 224, 1822. N. alba var. oocarpa. 
Caspary in Ind. Sem. Hort. Berol. App. 27, 1855. N. alba var. 
Candida Borbas Buda Korn. Nova 191, 1879. 
The description (abbreviated) from that given by Conard 
Waterlilies 172-3, t. 20-22, 1905, is as follows :— 
Flower 6-13 cm. Sepals 4-5 oblong or ovate-oblong (3-8 X 1-3 
cm.) narrowed at apex, acute or obtuse, about 7-veined, green 
outside, white within. Petals 12-20 white, nerved, outer ones 
nearly as long as sepals. Stamens 32-70, shorter than in alba , 
orange yellow, filaments lanceolate (outer) to linear-lanceolate 
(inner), long acuminate, never narrower than anthers, usually 
inserted only on the sides, not on the summit of the ovary. Pollen 
granulate with smooth operculum, larger than in alba. Ovary 
ovate or roundish, usually contracted and destitute of stamen insertions 
below the stigma. Carpels 5-14. Fruit ovoid or spherical. Seed 
larger than in alba, ellipsoid, brownish, 0.3 cm. long. Leaf cleft at 
base to petiole, sub-orbicular to oval, 10-30 cm. long, 25cm. wide, 
entire, lobes nearly equal, inner margins curved overlapping a little 
above, and spreading out towards periphery of leaf (or straight and 
parallel or touching), angles more or less acute. Veins on underside 
