i ai i 
SPECIES OF ZANNICHELLIA. 269: 
tam fugacibus ; carpellis subpedunculatis.—Z. palustris, Flor. Dan. 
67; Z. palustris, «, major, Koch. Syn. t. ii, p. 679. 
Planta fluitans, magnitudine Potamogetonis pusilli. 
zw Dorsi crista subcontinua.—Z. major, Reich. Icon. Crit. 758 ; 
Z. palustris, Bennh. Flor. Monast. p. 272. 
6. Dorsi crista dentata. 
Its size, and the appearance of its larger stipules on those branches 
which are not too old, are the characters which distinguish this sub- 
species ; it is very easily recognized, and appears to be found in the 
deeper water. According to M. G. Drees, Z. repens is only a vari- 
ety of Z. palustris, Linn. growing in caleareous water (see Linnea, 
1827, p. 237. The repens from the environs of Paris which we 
have seen, came from St. Cloud; and all the specimens from St. 
Gratien and from Montmorency which we have seen, belong to our 
major. 
IIl.—Z. pauustris, Willd. 
Z. antheris quadrilocularibus biapiculatis, stigmatibus paulum an- 
gustioribus integerrimis non papillosis, stylis in fructu maturato ova- 
ria subeequantibus.— Micheli Nov. Gen. t. xxxiv, f. 2; Z. palustris, 
Poiret, Encycl.; Smith, Flor. Brit. t. iii. p. 955; Z. palustris, r- 
stipitata, Koch. Syn. t. ii, p. 679. 
a Carpellis geminis longi pedunculatis ; filamentis 2-3-pollicari- 
bus. Fructus desideratur? circa Bonam Numidie vere 1833 
legebam, sed exemplaribus amissis, ex icone et schedula haud 
sufficientibus plantam adhuic dubiam hic refero.— ob. fig. 
16, 21. 
&, Carpellis geminis subsessilibus.—Z. digyna, Gay in Brébis- 
son Flore Norm.; Z. disperma, Saltzm. Pl. exs. in herb. 
Gay. 
Carpellis 3-5 plus minusve pedunculatis nonnuquam sessili- 
bus.—Z. digyna, var. tetragyna, Gay in herb. ; Z. mariti- 
ma, Nolte, Nov. Fl. Holsat.; Z. pedunculata, p maritima, 
Reich. Fl. Germ. Exc. t. i, p. 7, in Icon. Nost. f. 8, 11. 
. Carpellis 3-5 pedunculatis in utraque margine membranaceo- 
dentatis.—Z. gibberosa, Reich. Icon. Crit. t. 759,and Flor. 
Germ. Exc. t. i, p. 7. 
> 
or 
