Colensoane. N. O, Ranunculacee. 
TAB. DCXXXIV. 
RANUNCULUS MACROPUS. Hook. fil. 
Caule elongato erecto gracili glaberrimo parce ramoso, foliis 
longissime petiolatis flabelliformibus ternatis, foliolis cuneatis 
profunde 2-3 partitis, segmentis apice crenato-dentatis, pedun- 
culis oppositifoliis elongatis erectis 1-floris, sepalis 5 obovatis 
petala conformia suberecta duplo superantibus, staminibus 
paucis, acheniis glaberrimis ovatis in stylo elongato subrecurvo 
sensim attenuatis. 
Has. Near the Mission Station of Kaupapa, Poverty Bay, 
Northern Island, New Zealand; found growing almost en- 
tirely submersed in marshy pools. W. Colenso, Esq. 
Whole plant about 1 foot long, and but little branched. The 
radical petioles are rather thick, succulent, 8-10 inches long, 
dilated at the very base. Leaves # inch long by 23-3 broad, 
between flabellate and reniform in their circumscription. Stem 
about as long as the root-leaves, with 3 or 4 remote, solitary 
peduncles, each opposite to a cauline leaf, and longer than its 
petiole. Flowers small, the sepals spreading, slightly concave, 3- 
nerved. Petals much smaller than the sepals, suberect. Achenia 
smooth and glabrous, with rather a long, slightly-curved style. 
A very remarkable plant, from the great length of its petioles, 
(especially those from the root) and peduncles, and the small- 
ness of its petals as compared with the sepals. J. D. H. 
Fig. 1. Flower. f. 2. Underside of ditto. f. 3, Head of 
carpels, /f. 4. Single carpel :—magnified. 
