Plate 6. 
CALTHA SAGITTATA. 
Family, Eanunculace^ : — Petals separate, definite in number. Stamens 
indefinite. Petals and stamens inserted under the ovary. Ovary 
of separate carpels. 
Genus, Caltha {Marsh Mangold) : — Herbaceous plants having annual 
stems springing from a perennial rootstock. Sepals about 5, 
large and usually coloured, petals being absent. Stamens numerous. 
Carpels 5-10, each containing several seeds. 
Caltha sagittata, Cav. (Arrow-leaved Fig Marigold.) 
Plant varies greatly in size according to the moisture of the 
situation in which it grows. It forms thick, flat tufts on sand, 
while in water it is stout and tall. Eoots fibrous and matted. 
Stem a creeping or erect rootstock, covered with sheathing 
bases of leaf stalks. Leaves variable in size, undivided, arrow- 
shaped, with curled margins, shining green and paler on the 
under side. Flowers l-l^ in. in diameter, sometimes larger, 
possess a faint honey-like smell, but have no honey, flower 
stalk 1 in. to 1 ft. long, stout, erect, smooth, succulent. Perianth 
leaves 8-10, greenish- white or pale yellow. Carpels slightly 
hairy when young. 
Swamps, streams, ponds and moist sand near the sea. 
Locally abundant. 
Flowers November and December. 
East and West Falklands. 
Description of plate :— 1, whole plant in flower ; 2, section of flower ; 
3, stamen ; 4, carpels ; 5, section of carpel ; 6, plant in fruit ; 7, ripe 
carpel ; 8, seed ; 9, dwarf plant. All except 1, 6 and 9 enlarged. 
