70 LONDON BOTANICAL EXCHANGE CLUB. 
Spathe with two unequal lanceolate-acuminate valves, the larger one 
exceeding the umbel. Perianth campanulate, rose- or deep violet- 
purple, the outer segments very concave and carinate. Stamens ez- 
serted, one-third or half as long again as the perianth ; anthers yellow. 
Stylelonger than the stamens ; angles of the ovary afa 7"  Syno- 
nymy :— 4A. carinatum, L. Sp. 426; DC. FI. Fr. iii. p. 2 A. vio- 
lores Willd. A. flexum, W. iik. Rar. Hung. t. 278. s aie 
Hochst. The plant is well figured in Waldstein and Kitaibel, l. c., 
and in Redouté, Lil. vii. 368, also in Reichenbach’s Ic. Flor. Ger. vol. 
x. tab. 482—3, nos. 1058-59 (violaceum, W., and asperum, Don); 1057 
(carinatum, L.) must be quoted doubtfully. There are specimens in 
Billot, Exsicc. 1163. 
The species is found throughout Central Europe; also in Belgium, 
Denmark, and Gothland, and in North Italy (Venice), Turkey, and 
Central and Southern Russia. 
A form of the plant, without bulbs and capsuliferous, is often made 
a species under the names 4. montanum, Sibth., A. pulchellum, Don, 
A. paniculatum, Reich. (not Linn. or DC.). It is figured in Reich. 
Ie. Fl. Ger. x. 483-4, nos. 1060—61, and Redouté, Lil. v. 252. Spe- 
cimens from Los are in - Bill, Exsice. 671. 
he “A. carinatum, L.," of Smith, E. B. 1658, is nothing more 
than a broad-leaved, large form of 4. oleraceum, L. It has included 
stamens and greenish or yellow flowers, and is quite distinct from the 
species we are considering. 
Potamogeton decipiens, Nolte. (See last year’s Report.) Mrs. Hop- 
kins has contributed some more specimens of this from Bath. Flowers 
and fruit, however, are still desiderata. 
P. rufescens, Schrad. Specimens from between Woking and Chob- 
ham are sent by Mr. Watson, who suggests that the “ P. prelongus”’ 
of the Surrey Flora may be a misnomer, this species being intended. 
Ruppia maritima, L. With examples of this, collected by Mr. Syme, 
he writes, * It seems to be later in flowering than R. rostedlata, which 
grew with it, as it was in flower while R. rostellata was in seed. 
The peduncles of R. maritima elongate before flowering and rise out of 
the water, the flowers being often an inch or more above the surface. 
I have not seen this in R. rostellata.”’ 
Wolfia arrhiza, Wimm. Dr. Trimen sends plants collected this 
year at Staines, where it is still abundant, though apparently confined 
to a single piece of water. 
