|Photo Knut Norstog
|The Cycad Pages
- Zamia amplifolia hort. Bull ex Mast., "Gard. Chron., ser 2, 10(261): 810" (1878).
- "TYPE: Colombia, Dept. Valle del Cauca, N of Rio Calima, 36 km NE of Buenaventura, May 1976, Kiem & Norstog 30 (neo FTG, fide Stevenson & Sabato 1986)."
Originally intended to refer to the very large leaflets, "amplifolia"
actually refers to the leaves but is not really a misnomer.
Zamia amplifolia has been collected only four times in the
past 120 years and then only as vegetative material. As
Norstog and Nicholls (1997)
has pointed out Z. amplifolia is very
similar in leaves to Z. dressleri a species described from
However, other collections
show that Z. amplifolia has trunks up to 2.5 meters tall and
in contrast Z. dressleri always has a subterranean stem. The
paucity of reproductive material of Z. amplifolia leaves
this relationship ambiguous but it is interesting to note that
other species from the Choco such as Z. obliqua and Z. chigua
have disjunct populations in central and southern Panama.
Z. amplifolia is the only Zamia with prominently grooved leaflets
that also has leaflets with an entire margin.
Distribution and habitat:
Endemic to the Choco of Colombia and known from only four
collections over the past 125 years, all near the neotype locality.
This species is so rarely collected that it is hard to assess.
However, this leads one to think that it is very rare. The
existing poulations are threatened by habitat destruction
for coffee plantations.
1997 IUCN Red List of Threatened Plants Category R,II,V.
arborescent, to 2.5 m tall.
triangular basally, lanceolate apically, 2-3 cm long, 1-2 cm wide.
3-6, 1-2 m long; petiole 0.5-1 m long, sparsely to densely
prickled; rachis with 6-10 pairs of leaflets, occasionally with
a few prickles in the lower third.
elliptic, grooved between the veins on the adaxial surface,
cuneate basally, acuminate apically, margins entire, the median
ones 30-50 cm long, 12-15 cm wide.
cream to tan, cylindrical to elongate-cylindrical, 8-12 cm
long, 1-2 cm diam.
brown, short pedunculate, cylindical to ovoid cylindrical,
20-40 (50) cm long, 8-12 cm diam.
red, ovoid, 1.5-2.5 cm diam.
2n = 18.