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| Photo Dennis Stevenson
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| The Cycad Pages
| | Zamia lecointei
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- Zamia lecointei Ducke, Arch. Jard. Bot. Rio de Janeiro 1: 9-10, pls 1-2 (1915).
- TYPE: Brazil, Rio Erepecuru, 2 Oct 1913, Ducke s.n., MG 15027 (holo MG iso G).
Zamia jirijirimensis R.E. Schult., Mutisia 15: 2 (1953).
- TYPE: Colombia, Comisaria del Amazonas, Rio Apaporis, Raudal de Jirijirimo, Mar 1951, R.E. Schultes 12101 (holo GH).
Zamia obidensis Ducke, Arch. Jard. Bot. Rio de Janeiro 3: 19 (1922).
- TYPE: Brazil, Para,Rio Branco de Obidos, Mar 1918, Ducke s.n. (holo MG, fragment F).
Etymology:
The specific epithet honors Paul LeCointe who lived in Obidos, Brazil
and accompanied Adolf Ducke when the species was discovered.
Historical notes:
Ducke (1915)
described Z. lecointei and mentioned another
probable new Zamia which he described as Z. cupatiensis
in 1922. 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. In the same paper, Ducke (1922)
also described Z. obidensis which was intermediate between
his Z. lecointei and his Z. cupatiensis. Because
Ducke mistakenly thought that Z. ulei had linear-lanceolate
leaflets, he (1935) considered Z. lecointei to be a subspecies,
Z. ulei subsp. lecointei. This problem was compounded by
Schuster (1932).
As a result, Schultes (1953)
redescribed Z.
lecointei as Z. jirijirimensis. However, the type specimens
for these two names are identical. Thus, Z. cupatiensis is
a synonym of Z. ulei, and Z. jirijirimensis is a synonym
of Z. lecointei. Moreover, Z. obidensis is a shade- and
juvenile form of Z. lecointei (compare the plant on the left with
the one on the right in the above photograph).
Distinguishing features:
Zamia lecointei is most similar to Z. muricata. The two taxa
share a common distribution pattern but are not sympatric and prefer
different habitats. Zamia lecointei grows in open dry areas of
sandy to pure sand soils whereas Z. muricata grows as an understory
plant in mesic conditions in wet clay soils. Consequently, Z.
lecointei has subcoriaceous to coriaceous, linear-lanceolate,
subfalcate leaflets that are entire or with only 1-3 indistinct apical
teeth. In contrast, Z. muricata has chartaceous to papyraceous,
oblong-lanceolate to lanceolate, inequilateral leaflets that are
clearly denticulate in the upper half of both margins.
Distribution and habitat:
In Amazonas and Bolivar, Venezuela; Para, Brazil north of the Amazon River
to central Colombia and Brazil. Generally growing in very sandy well
drained soils from 100-300m. Often in the open in the direct sun or as
an understory in secondary vegetation. The leaflets become more narrower
and quite coriaceous with nearly entire margins in open habitats as opposed
to more shaded conditions where the leaflets are wider, thinner, and with
well-developed serrations in the upper third.
Conservation status:
Zamia lecointei is most common in Bolivar, Venezuela in both pristine
and disturbed habitats. Seed set appears high and the populations are not,
at this time, threatened by development or destruction. Not listed in the
1997 IUCN Red List of Threatened Plants.
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| Photo Dennis Stevenson
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| Photo Dennis Stevenson
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Description:
Stem subterranean and tuberous, 5-8 cm diam.
Cataphylls triangular basally, linear-lanceolate apically, 3-6
cm long, 1-2 cm wide.
Leaves 2-4, erect or slightly curved, oblong, 1-2 m long;
petiole terete, to 75 cm long, sparsely armed with stout prickles;
rachis terete, usually unarmed, to 1 m long, 30-40 pairs of leaflets.
Leaflets subcoriaceous to coriaceous, linear-lanceolate,
subfalcate, long acuminate at apex, margins entire or rarely with
2-3 indistinct teeth near the apex of lower margin, the median ones
30-37 cm long, 1-2 cm wide.
Pollen cones 2-6, cylindrical, cream to light brown, 6-10 cm
long, 1-2 cm in diameter; peduncle 10-20 cm long.
Seed cones usually solitary, brown, 10-15 cm long, 3-5 cm in
diameter; peduncle 5-8 cm long.
Seeds red, ovoid, 3 cm long, 2 cm in diameter.
2n = 16.