A revision of Geonoma (Arecaceae)
Author
Henderson, Andrew
text
Phytotaxa
2011
2011-02-18
17
1
271
journal article
24911
10.11646/phytotaxa.17.1
65962ba7-eec1-40e7-aed6-cef94e99ca39
1179-3163
3538362
49h.
Geonoma pinnatifrons
subsp.
ramosissima
(Burret) Henderson
,
comb. & stat. nov.
Basionym:
Geonoma ramosissima
Burret (1930a: 249)
. Type:
COLOMBIA
.
Antioquia
: Cieneguetas,
27 July 1880
,
W. Kalbreyer 1892
(
holotype
B, destroyed).
Neotype
(selected by
Bernal
et al.
1989
):
COLOMBIA
.
Antioquia
: Mun. Frontino, Corregimiento de Murrí, road from Nutibara to La Blanquita, Río Cuevas,
950 m
,
23 March 1982
,
R. Bernal & G. Galeano 306
(
neotype
COL!, isoneotype NY!).
Leaf
pinnae 15(12–17) per side of rachis.
Inflorescences
peduncular bracts inserted 1.3(1.0–1.5) cm above the prophyll; peduncles 19.3(16.5–22.0) cm long, 18.2(15.2–21.2) mm in diameter; rachillae 11.4(7.0–16.0) cm long, 1.6(1.1–2.3) mm in diameter;
fruits
3.8(3.5–4.0) mm in diameter.
Distribution:—
From 3°55’–
7°00’N
and 75°54’–
77°37’W
on the Pacific Coast and western slopes of the Western Cordillera in
Colombia
, at 427(0–1150) m elevation in lowland to montane rainforest (
Fig. 32
).
There is geographic discontinuity but too few specimens to test for differences, and too few to test for geographical variation. Three specimens (
Bernal 306, Betancur 2818, Forero 7370)
from higher elevations on the western slopes of the Western
Cordillera
appear intermediate between this subspecies and
G. interrupta
subsp.
magnifica
, and may represent hybrids. They have the flower pits densely hairy internally distally only, as in
G. interrupta
.