beautifulflowers032840mbp

184 BEAUTIFUL FLOWEKS OF KASHMIE [PI. 81 & 82
into a slender, tapering appendage, much shorter than the
The
spathe, the tip bent forwards and protruding to one side.
sexes on different plants. Anthers purple.
Flowers. June, July.
Locality. Tosh Maidan, in open stony places, 10,000 ft. ;
Mekhowali, in forest clearings, 9,000 ft., abundant.
Distribution. Temperate Himalaya, from Kashmir, 7,000-
8,000 ft., to Bhutan, 10,000-12,000 ft. Plate 62
NAIADACEAE.
(From Naias, a water nymph, alluding to the habitat of most plants
belonging to this family.)
POTAMOGETON, Linn.
(From the Greek potamos, a river, and geiton, a neighbour,
to the aquatic habitat of the plants.)
alluding
A. Upper or ail leaves floating,
I. Stipules 4-5 in. ... ... ... ... P.natans.
II.
Stipules 1-li in.
1. Floating leaves 3-4 in. long, submerged
lance-shaped ... ... P. indicus.
2. Floating leaves 4-1 1 in. long, submerged
linear or filiform ... P. javanicus.
B. Leaves all submerged.
I. Leaves egg-shaped, oblong or broadly
j I.
linear.
1. Leaves entire P. perfoliatus.
2. Leaves finely toothed.
a. Flower-spikes i in. long ... ... P. crispus.
b. Flower-spikes 1J-2 in. long ... P. lucens.
Leaves filiform or narrowly linear.
1. Stipules united with the leaf-sheath P. pectinatus.
2. Stipules small, free P.pusillus.
Potamogeton natans, Linn. Broad-leafed Pondweed.
Stem creeping below, simple, rounded. Leaves leathery,
elliptic the floating ones alternate, egg-shaped, elliptic to
;
lance-shaped, long-stalked, the blade running down on the
leaf-stalk, folded, the leaf-stalk jointed below the limb ; the
lower leaves linear to lance-shaped, or awl-like. Stipules long
and narrow-pointed. Flowers with parts in fours form a
dense spike which rises above the water on a stout stalk.
Sepals clawed, roundly rhomboidal. Fruit large, rounded,