2732
CALLITRICHE autumnalis^
Autumnal Water Starwort.
JVLONOE CI A Monandria.
Gen. Char. Perianth none (or, if present, single,
and two-leaved). Anther 1-celled. Germen 4-
lobed. Caps, with 4, laterally compressed, indéhiscent,
1-seeded cells.
Spec. Char. Leaves sessile, single-ribbed, linear,
tapering upwards, abrupt and notched. Bracteas
none. Fruit nearly sessile, its lobes broadly
winged at the back.
Syn. Linn. Sp. PL 6. Willd. v. 1. 29. Sm. Engl. FI.
v. 1. 10. Hook. Brit. FI. 384. DeCand. Prodr.
v. 3. 71. Spreng. Styst. Veget. v. 1. 20.
F r o m Llyn Maelog, Anglesey. The plant figured at
t. 2606 of this work is C. pedunculata (Pedunculated
Water Starwort). See Arnott, in Journ. of Nat. and
Geogr. Sc. v. l .p. 427, and Hooker’s British Flora.
Herb entirely submersed, destitute of floatino- leaves
growing in patches. Stem annual, branched, creeping at
the base, with solitary fibrous roots at the joints. Leaves
dark green, with cartilaginous pale margins, widest at the
base, and becoming gradually narrower towards the abrupt
and acutely notched extremity; widely spreading, and rather
densely crowded in alternate pairs, twice as large as those
of C. pedunculata. Styles 2, capillary, deflexed. Stigmas
linear, acute. Germen sessile, or very indistinctly stalked -
the lobes at length much dilated. Fruit four times larger
than that of C. pedunculata, dark brown, the lobes much