Aponogeton. | CLXX. NAIADACEH. (J. D. Hooker.) 565 
saying, “There isa var. if not a distinct species with hedgehog 2-seeded capsules, 
bat in all other respects the same.’’—It follows that he, by inadvertence, describes 
the follicles of A. echinatum as 6-seeded. 
4 A. microphyllum, Roxb. Fl. Ind. ii. 211; leaves very small 
oblong long-petioled sides incurved, spike solitary, sepals much larger 
the 3 smooth 1-2-seeded follicles, seeds globose. Spathium microphyl- 
lum, Voigt Hort. Suburb, Caleutt. 694. 
Buoran Mrs, ; in damp places, Roxburgh. 
I have seen no specimens, aud Roxburgh’s description differs much from a 
"ing in his collection, The latter represents a plant seven inches high, with a 
smooth naked tuber, four leaves with sheathing petioles 14 in. long, blade 4 by 4 in. 
concave recurved, apparently oblong acute, and quite opaque; spike 14 in., clothed 
mth spreading white sepals 4 in. long, and red-brown anthers. Roxburgh, on the 
and, describes the leaves as many times shorter than the spike, spreading 
to the surface of the earth, 1 in. long by à broad, and the spike as everywhere 
Covered with beautiful blue flowers. The globose seeds are remarkable. 
3. POTAMOGETON, Linn. 
e gbmerged water-plants with creeping rootstock. Leaves submerged 
Dating, Opposite or alternate, entire or toothed ; stipules intrafoliaceous. 
ers small spicate on a scape rising from a membranous spathe, 
„teate. Perianth-segments 4, concave, green, valvate. Anthers Ki 
1 lle on the segments, didymous, slits extrorse. Carpe/s 4, sessile, 
wed, l-ovuled ; stigma subsessile or decurrent, persistent ; ovule in- 
TT In the inner angle of the cell, campylotropous. Drupe/ets small, 
abon us or spongy. Seed subreniform; embryo macropodal.—Species 
t 50, cosmopolitan. 
d of determining the Indian species of Potamogeton I have had the invaluable 
Bw T. Arthar Bennett, F.L.S., whose knowledge of the genus is as full as it is 
+ 
Upper or all the leaves floating. 
‘ar indi i. A8 floating oblon 
iptie 4 cus, Roxb. Fl. Ind. i. 452; upper leaves floating g 
x Pi or elliptic-lanceolate coriaceous, lower submerged longer narrower 
mranous, stipules 1-1} in. free, spike dense-fid., drupelets small 
act ete. Floating leaves 3-4} by 1-2} in., alternate or uppermost opposite, 
JF rounded ; Stipul long as the petioles or shorter. 
Sont ed, opaque; stipules as long as t! t 
m d ender.—Differs from P. natans especially in the shorter stipules and 
2 P j floating oblong 
ipu," Batans, Linn. Sp. Pl. 126; upper leaves floating 
nie i elliptic-lnnceolate biplicate at the Desertion of the petiole, sub- 
"Sieg few or 0, stipules 4-5 in. free spikes dense-fld, pedunc E SC 
A Se dorsally keeled shortly beaked. Kunth Enum. ii. 127. l eichb. 
l4, Germ, vii. t. 50; Boiss. Fl. Orient. v. 15; Aitch. Ca!. Panja . 
‘Tufescens, Aitch. Le 145. 
