|Photo Dennis Stevenson
|The Cycad Pages
- Zamia ulei U. Dammer, Verh. Bot. Vereins Prov. Brandenburg 47: 117-118 (1907).
- "TYPE: Brazil, Chachoeira oberer Rio Jura, May 1901, E. Ule 5523 (lecto HBG, iso L, G, MG, F, K)."
The specific epithet honors E. Ule, an Amazonian plant
collector of the latter half of the nineteenth century who first collected
the species in Brazil.
Ducke (1915) described Z. lecointei and
mentioned another probable new Zamia which he described as
Z. cupatiensis in
The type, illustration (Ducke, 1915: t.1),
and description of Z. lecointei all show linear-lanceolate leaflets.
Ducke's (1915) concept of Z. ulei is presented in t.2 of the same
paper; this bears little resemblance to the type or description
(Dammer, 1907) of Z. ulei
which has ovate-lanceolate to elliptic leaflets. As a result of his
misconception, Ducke described Z. cupatiensis in 1922. The
description and photograph of Z. cupatiensis (Ducke, 1922, t.2)
match the photograph and isotypes of Z. ulei. Thus,
Z. cupatiensis is considered a synonym of Z. ulei.
Zamia ulei is similar to
Z. obliqua but the latter always has oblique leaflets and
Z. ulei always has symmetrical leaflets. Moreover, adult
plants of Z. obliqua are arborescent in contrast to the
acaulescent stems of Z. ulei. Zamia ulei is also similar
to Z. urep. Zamia urep differs from Z. ulei in
having a short slender trunk and lanceolate to elliptic, asymmetrical
leaflets with very coarsely serrate margins in contrast to the
symmetrical, elliptic leaflets with fine serrations on Z. ulei.
Zamia urep is isolated in Central Peru.
Distribution and habitat: North of the Amazon River in Para
and Rio Branco, Brazil and disjunct to the bordering regions of western
Brazil and eastern Peru and Colombia
Zamia ulei is fairly common in sporadic
populations throughout its range. Seed set and seedling establishment
appear to be high. Not listed in the
1997 IUCN Red List of Threatened Plants.
|Photo Douglas Daly
Stem subterranean and tuberous, tapering distally, 4-6 cm in diam.
Leaves 2-4, 1-1.5 m long, broadly ovate; petiole to 1 m long,
terete, generally armed with numerous prickles; rachis to 50 cm long,
with 3-6 pairs of subopposite leaflets, often armed with prickles in
the lower third.
Leaflets sessile, papyraceous to subcoriaceous, oblong-elliptic
to elliptic-ovate, sometimes slightly falcate, obtuse and constricted
at base, acute to short-acuminate at apex, 12-15 teeth on each margin
in the upper one-half, the median ones 12-20 cm long, 6-10 cm wide.
Pollen cones usually 2-5, tan, cylindrical, 6-10 cm long, 1-2
cm in diameter; peduncle 6-8 cm long.
Seed cones 4-6 cm in diameter; peduncle 8-10 cm long.
Seeds red, ovoid to oblong, 15 mm long, 8 mm in diameter.
2n = 26.