426 Hill .— The Genus Caltha in the Southern Hemisphere . 
material for such delicate structures. Some trace of a nectary like that 
figured by Mueller is noticeable on the carpels of C. andicola , but as the 
nectaries cannot be clearly recognized in dried specimens of C.palustris , the 
point must be left uncertain. 
Key to Species. 
Leaves sagittate, or cordate with lobes infolded from the base, the axis of the 
fold being at right angles to the petiole. 
Margins of leaves and folds (appendages) entire or 
Perianth-segments 8 - 9 , ovate, obtuse . 4. 
Perianth-segments 5 - 7 , linear-subulate . 10. 
Margins of leaves and appendages crenate. 
Perianth-segments 6 - 8 , oblong, obtuse; 
leaves about 2 cm. long, 2*5 cm. broad . 
Perianth-segments 5 , oblong, obtuse, or 
subacute; leaves o- 8 -i cm. long and 
broad ....... 
Leaves lanceolate-sagittate ; appendages narrowly 
oblong-erect, infolded obliquely ; axis of fold at 
an angle of 45 0 to petiole; leaves 2 * 5-4 cm. long. 
Perianth-segments 5 - 8 , linear-lanceolate 
Leaves ovate- or cordate-sagittate ; lobes infolded 
laterally with axis of fold more or less parallel to 
the petiole; leaves i~i* 2 cm. long and broad. 
Perianth-segments 5 , ovate, obtuse 
Leaves either cordate-sagittate, elliptic-ovate, or 
sub-rotund and deeply bilobed with marginal 
teeth; appendages erect, wing-like, attached to 
•the lamina on either side of the midrib. 
Appendages simple. Perianth-segments ovate 2. 
Appendages bilobed at the base. Perianth- 
segments linear-lanceolate .... 8 . 
Appendages elliptic,furnished like the laminae 
with marginal teeth. Perianth-segments ovate 
with thickened tips 
Leaves obovate-spathulate; appendages spathulate, 
narrowed almost to a petiole, and arising from the 
lamina on either side of the midrib. 
Leaves with lateral lobes. Perianth-segments 
linear-lanceolate, twice as long as stamens . 5. 
Leaves without lateral lobes. Perianth-seg¬ 
ments ligulate, about as long as stamens . 6 . 
slightly sinuate. 
C. sagittata 
C ’. novae-zelandiae 
3. C. andicola 
11. C, obtusa 
9. C. introloba 
1. C. involuta 
C. alata 
C. phylloptera 
7. C . dioneaefolia 
C. appendicidata 
C. limbata 
