Novelties in “ incertae sedis ” Vriesea (Bromeliaceae: Tillandsioideae): Redescriptions, new combinations and nomenclatural revision
Author
Kessous, Igor M.
Programa de Pós-Graduação em Ciências Biológicas (Botânica), Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, São Cristóvão, CEP 20940 - 040, Rio de Janeiro, RJ, Brazil
Author
Costa, Andrea F.
Departamento de Botânica, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, São Cristóvão, 20940 - 040, Rio de Janeiro, Brazil
text
Phytotaxa
2023
2023-02-27
585
2
71
101
http://dx.doi.org/10.11646/phytotaxa.585.2.1
journal article
10.11646/phytotaxa.585.2.1
f648d987-0485-4e81-a650-dec255e19aa8
1179-3163
7681555
3.4
Vriesea maguirei
Smith (1969: 32)
.
Type
:
—
BRAZIL
.
Amazonas
: summit,
Serra
da Neblina
,
2,340 m
elev.,
1 December 1965
,
Maguire
,
Pires
&
Maguire
60442
(
holotype
US!, isotypes US!, NY!, F!)
Description:—Plant
epiphytic or terrestrial,heliophyte,flowering
160−170cm
high.
Leaves
forming an infundibuliform rosette;
sheath
oblong, 11−13 ×
9−11 cm
, densely lepidote on both surfaces, denser on the adaxial surface;
blade
oblong, triangular attenuate toward the apex, 46–51 ×
7–7.5 cm
, apex acute, lepidote on both surfaces, denser on the abaxial surface.
Inflorescence
compound, once-branched, distichous, ca.
150 cm
long, erect;
peduncle
erect, ca.
100– 110 cm
long,
10–29 mm
in diameter (flattened
in sicco
), glabrous;
peduncle bracts
erect to suberect, imbricate, ovate to oblong, 7–14 ×
4–5 cm
, sparsely lepidote on both surfaces;
main axis
hidden by the branches and bracts, ca.
30–40 cm
long, ca.
11.5 mm
in diameter, glabrous;
primary bracts
ovate-elliptic, 62–77 ×
35–40 mm
, lepidote on the adaxial surface;
spikes
14–16 (including the terminal one) in number,
6–9 cm
long, densely 5–7 flowered, complanate, with or without a sterile bract at the apex;
rachis
geniculate,
30–40 mm
long and ca.
5 mm
in diameter.
Floral bracts
ovate, acute, 47–55 ×
20–32 mm
, carinate toward the apex, yellow with red apex, equaling or slightly exceeding the sepals, glabrous on the abaxial surface, and densely lepidote on the adaxial surface.
Flowers
ca.
60 mm
long, ca.
7.5 mm
apart, distichous, suberect;
sepals
narrowly oblong, 30–35 ×
9–10 mm
, free, ecarinate, symmetric to subsymmetric, sparsely lepidote on the adaxial surface, glabrous on the abaxial surface;
petals
linear-oblong or slightly spatulate, 50 ×
8–10 mm
;
petal appendages
not observed in the examined material (however observed by
Smith, 1969
);
stamens
included;
filament
ca.
30 mm
long;
anther
ca. 6.7 ×
1.2 mm
, erect;
pistil
exceeding the stamens;
ovary
conical, ca. 6.5 ×
2.2 mm
;
style
ca.
42 mm
long; stigma unknown.
Fruits
fusiform, suberect,
35–40 mm
long;
seeds
including coma
16–17 mm
long, with a short or absent apical coma, basal coma ca.
10 mm
.
Distribution:
—This species grows as an epiphyte or terrestrially, from
1,730
–2,500
m
above sea level, near the border between
Venezuela
and
Brazil
, region of the Serra da Neblina (Cerro de la Neblina).
Taxonomic and nomenclatural notes:
—Unlike other
Vriesea
species
,
V. maguirei
has an inconspicuous (or absent) apical coma on the seed (
vs
. conspicuous). In addition, it has a compound inflorescence with dense spikes. This
type
of inflorescence is observed especially in
Mezobromelia
species
(
Barfuss
et al.
2016
), which has a similar geographical distribution in northern and northwestern South America. We were unable to ascertain the morphology of the stigma in the material examined.
Despite the features that may indicate an affinity to
Mezobromelia
, we opted to maintain this species in
Vriesea
, especially because lack of certain reproductive traits to support a new combination.
Etymology:
—The specific epithet “
maguirei
” refers to the collector of the
type
, Bassett Maguire (1904–1991).
Representative Specimens Examined:
—
VENEZUELA
.
Amazonas
: Cerro de Neblina, Planicie de Zuloaga,
Rio Titirico
,
October 1970
,
Steyermark
103873 (
VEN
)
;
Cerro de la Neblina, Camp VII,
5 km
.
NE of Pico Phelps
(=Neblina),
00°50’45”N
,
65°38’10”W
, alt. 1,730–1,850 m,
31 January 1985
,
Nee
30669
(
NY
).
BRAZIL
.
Amazonas
: P.N. do Pico da Neblina, matas nebulares a aprox. 2,300/2,500 m elev. encostas do Platô a 2,200 m elev.,
20 August 1985
,
Farney
&
Pessoa
856
(
RB
)
;
Santa Isabel do Rio Negro,
Parque Nacional do Pico da Neblina
, Igarapé Cuiabixi.
0
o
47’18”N
,
66
o
01’15”W
,
2,060 m
elev.,
20 November 2012
,
Forzza et al. 7213
(
RB
)
;
Santa Isabel do Rio Negro. Parque Nacional do Pico da Neblina, picada da Bacia do Gelo para igarapé Ariabuzinho,
0
o
47’19”N
,
66
o
01’23”O
,
2,100 m
elev.,
21 November 2012
,
Martinelli et al. 17837
(
RB
,
INPA
).