Novelties in Austroblechnum (Blechnaceae) from Colombia
Author
Murillo-A, José
Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá, Colombia.
Author
Triana-Moreno, Luz A.
Departamento de Ciencias Biológicas, Universidad de Caldas, Manizales, Colombia.
text
Phytotaxa
2022
2022-11-15
572
3
268
274
http://dx.doi.org/10.11646/phytotaxa.572.3.5
journal article
188145
10.11646/phytotaxa.572.3.5
d9466231-8146-4e1e-989e-c46f506a7271
1179-3163
7322220
Austroblechnum aequatoriense
(A.Rojas) Gasper & V.A.O. Dittrich
in
Gasper
et al
. (2016: 202)
.
Blechnum aequatoriense
A.
Rojas
(2008: 9)
.
Type:—
ECUADOR
.
Pichincha
:
Quito Cantón
,
Río Guajalito Natural Reserve
,
10 km
W of Chiriboga
,
km 69 of old road Quito–Santo Domingo
,
0º14’S
,
78º48’W
,
1900 m
,
9 July 1991
,
A. Fay
&
L.
Fay
3204 (
Lectotype
MO
[
MO-5045402
!] designated here;
isolectotypes
MO
[
MO-5045400
!],
QCNE
[
QCNE-104962
!],
UC
)
.
Notes
:—
This
species had been characterized by having a glabrous rachis and lamina base with (1–) 3 to 8 (–11) pairs of reduced pinnae (Rojas 2008).
In Colombian
specimens, the lamina has a rachis abundantly covered with simple hairs, mainly
ca
.
1 mm
long, and the number of reduced pinnae ranges from (3–)5 to 8.
The
finding of
Colombian
specimens belonging to
A. aequatoriense
expands the distribution range of the species, previously known from the Carchi and Pichincha provinces in northern
Ecuador
(Rojas 2008).
The
expanded range encompasses the departments of
Cauca
,
Chocó
, and
Nariño
in
Colombia
(
Fig. 3
).
In
addition, the elevational range of the species, originally ranging from
1900 to 2650 m
(Rojas 2008), now extends to
1500 m
.
FIGURE 3.
Distribution map of
Austroblechnum bullatum
(star) and
Austroblechnum aequatoriense
(square). Map modified from QGIS v 3.18.3-Zürich (http://qgis.org).
Rojas (2008) chose
A. Fay & L. Fay 3204
(MO) as the type of
A. aequatoriense
, but he did not select the
holotype
from the two available specimens (MO-5045400 and MO-5045402). We designate MO-5045402 as
lectotype
of this species. This specimen is more informative, since it has a less damaged fertile leaf than MO-5045400.
Examined specimens:
—
COLOMBIA
.
Antioquia
:
Ituango
, camino
de Guasimal
hacia el
Alto del Oso
, límites entre los departamentos de
Antioquia
y
Córdoba
,
2140 m
,
15 May 2003
,
W
.
Rodríguez
et al. 3754
(
COL
)
.
Cauca
:
El Tambo
,
Cachimbo
, en el camino
El Tambo–San Juan de Mechengue
,
1600 m
,
30 July 1958
,
H
.
Bischler
1363
(
COL
)
.
Chocó
:
San José del Palmar
, vereda
Corcovados
, finca
La Esperanza
,
1950 m
,
19 January 1983
,
S
.
Diaz
3728
(
COL
);
principal ridge and slopes
2 km
E
of San José del Palmar
,
1550–1650 m
,
D.
Lellinger
&
E
.
de La Sota
757
(
COL
); vereda
El Tambor
,
1540 m
,
18 January 1983
,
P
.
Franco
et al. 1506
(
COL
)
.
Nariño
:
Ricaurte
,
entre La Planada y Pialapi
,
1500–2000 m
,
13 November 1967
,
L
.
E
.
Mora
4022
(
COL
)
.