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
37e.
Geonoma maxima
subsp.
compta
(Trail) Henderson
,
comb. & stat. nov.
Basionym:
Geonoma spruceana
subsp.
intermedia
var.
compta
Trail (1876: 329)
. Type:
BRAZIL
. Amazonas: Barcellos,
30 June 1874
,
J. Trail 997/LXXXIV
(
holotype
K!).
Geonoma spruceana
subsp.
intermedia
var.
intermedia
Trail (1876: 329)
. Type:
BRAZIL
. Amazonas: Lago Cerrado, Rio Juruá,
30 October 1874
,
J. Trail 989/CXLVII
(
holotype
K!).
Leaves
regularly pinnate with 1-veined pinnae, not plicate; rachis 44.5(11.0–87.0) cm long; pinnae 18(6–29) per side of rachis; basal pinna 0.3(0.1–0.5) cm wide, forming an angle of 58(38–77)° with the rachis.
Inflorescences
rachillae 19(4–40).
Distribution and habitat:—
From
1°11’N–
11°10’S
and 56°00’–
77°40’W
in the central and western Amazon region in
Colombia
,
Brazil
,
Peru
, and
Bolivia
at 193(122–400) m elevation in lowland rainforest (
Fig. 26
).
Some specimens from the Colombian Amazon (e.g.,
Galeano 1973, García-Barriga 15005, Zarucchi 1712
) have wider pinnae than the others, more like those of
subsp.
hexasticha
. One specimen from Amazonas in
Peru
(
Díaz 7131
) appears intermediate between
subsp.
compta
and
subsp.
camptoneura
.