NOTES ON POTAMOGETON. 75 
racemes 8-10 in. long, with very tumid nodes, each raceme 
containing 60-80 flowers ; pedicels 2-5 nate, about an inch long. 
Calyx campanulate, green, 4 in. long; teeth very small. Corolla 
pale yellow, tipped with bright red; standard seu lanceolate, 
24 in. long, reflexing in the expanded flower ; wings oblique oblong, 
about half as long as the pa ah keel as lo ong as the standard, 
much incurved, narrowed to the acute apex. Pistil and stamens 
as long as the keel, hidden paid it; ovary linear, wuiticcpsieies 
Po 
must be a very fine plant when growing, and would be well 
worth introducing into cultivation. 
NOTES ON POTAMOGETON: 
AS TREATED By Dr. Ricurer in ‘Pianta Evropex,’ pp. 11—16. 
By Arruur Bennett, F.L.S. 
. P. erplanatus M. et K., and P. petiolatus Wolfg.! belong 
ye to P. fluitans than to P. natans; certainly the latter does. 
8. Meyer. Ch. Hann. refers P. fluitans to P. oblongus as a 
as 
OMe ge vehi Boiss.! is at most only a subspecies or variety 
of B polyyon 
ae of Polonia Pourr. is not endemic to Europe; it occurs 
in Asia!, Africa !, N. Zealand!, &c. 
7. P. mic ait Wolfg. ! has no right to appear as a synonym 
of rufescens where Europe is concerned ; it was founded on speci- 
mens from the Aleutian Isles. It is more entitled to be separated 
from rufescens sat aay than P. nerviger _— Dr. Richter has 
‘‘ Duer.”’; the r himself wrote Du Cro 
9. P. color Poi tom: is not endemic “y Europe; it occurs in 
. D. variifolius Thore! is to be referred to fluitans (not 
heterophyllus); as long ago as 1810 it was referred to natans by 
Pohl. (Yen. Hl. “Boh. p- ae 
P. paucifolius Opiz. in Boh. Gen. 1823, is a name only; he 
described it in Vi cera Tausch, p. 223 (1825), but Kosteletzky 
characterised it as a variety of heteroph nike in Cl. Anal. Fl. Boh. 
on p- 24 (1824.) 
P. angustifolius Op:z. Boh. Gen. 1823, name only ; the reference 
(and description) is to be found in Presl and Berchtold’s Rustlin, 
vet. 
P. macrophyllus Wolfg. ate is adopted, instead of P. 
lonieln ee (1816),.....0¢ Be “Lonchi ee in Sow.” is mis- 
This plant is not referable to se 3 but perhians to hetero- 
phyllus. P. spe lius Wolfg., belongs rather to decipiens than to 
macrophyllus. 
