Melastomataceae in a continental Atlantic Forest island from southeastern Brazil
Author
Silva-Gonçalves, Kelly Cristina Da
Programa de Pós-graduação em Ciências Ambientais e Florestais; Universidade Federal Rural do Rio de Janeiro; UFRRJ, Rodovia BR- 465, Km 7, 23.890 - 000, Seropédica, Rio de Janeiro, Brazil; E-mail: kellysilva 2010 @ yahoo. com. br & Author for correspondence
Author
Baumgratz, José Fernando A.
Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rua Pacheco Leão 915, 22.460 - 030, Rio de Janeiro, Brazil; E-mail: jbaumgra @ jbrj. gov. br
Author
Nunes-Freitas, André Felippe
Departamento de Ciências Ambientais e Florestais, Universidade Federal Rural do Rio de Janeiro; UFRRJ, Rodovia BR- 465, Km 7, 23.890 - 000, Seropédica, Rio de Janeiro, Brazil; E-mail: afnfreitas @ gmail. com
text
Phytotaxa
2014
2014-10-17
183
2
61
92
http://dx.doi.org/10.11646/phytotaxa.183.2.1
journal article
10.11646/phytotaxa.183.2.1
1179-3163
5149548
5.9.
Miconia prasina
(
Swartz 1788: 69
)
Candolle (1828: 188)
. [
Figs. 3n
,
8n–q
]
Treelets or trees,
2–7 m
; indumentum of the branches, leaves, inflorescences, hypanthium and calyx furfuraceousstellulate, the trichomes caducous. Petioles
0.5–1.3 cm
long; blade 10.9–26
×
4–8.7 cm
, green, concolour to subconcolour, membranaceous to papiraceous, elliptic, base acute-decurrent or obtuse-cuneate, apex acuminate to acute, margin crenulate, abaxial surface early-glabrescent; acrodromous veins 5, the inner pair
15–44 mm
suprabasal. Thyrsoids
9.9–19.9 cm
long, no branchlets of glomerules; bracts ca. 1
×
0.5–0.8 mm
, bracteoles 0.7–0.9
×
0.2–0.4 mm
, both concave, oblong-triangular, apex acute, persistent. Flowers 5-merous, pedicelate; hypanthium 1.5–2.1
×
1.2–1.9 mm
, campanulate; inner torus glabrous; calyx persistent, lobes 0.6–0.9
×
0.8–1 mm
, triangular; petals 2–2.5
×
1–1.6 mm
, white, asymmetric, ovate, apex obtuse to rounded, sometimes emarginate; stamens isomorphic, subequal in size; filaments
3–4 mm
long; anthers
2.8–3 mm
long, white, pore terminal, connective slightly prolonged, appendage bilobed, with lateral and ventral lobes, or 3-lobed, with an additional dorsal calcar; ovary 0.8–1.3
×
1–1.5 mm
, inferior, 3-celled, puberulous; style
5.8–6.5 mm
, glabrous.
Bacidium
3–4
×
3.2–4.2 mm
, subglobose, puberulous, polyspermous (50–80 seeds); seeds 0.7–1
×
0.4–0.9 mm
, narrowly obtriangular.
Specimens examined
:—
17.XII.1997
, fr.,
R. Facre
5
(
RBR
)
;
13.V.1998
, fl.,
R.
Couto
s.n.
(RB 378276, RBR 10258)
;
28.XII.1998
, fr.,
L.F.T. Menezes
& M.C.
Souza
s.n.
(
RBR
10260)
;
29.V.1999
, fr.,
L.F.T. Menezes
et al. 291
(
RBR
)
;
16.II.2000
, fl., fr.,
R.H.P.
Lima
348
(
RBR
)
;
15.IV.2000
, fl.,
M. Conde
481
(RB,
RBR
)
;
3.VIII.2002
, fr.,
Adriano
&
G.M. Siqueira
69
(
RBR
)
;
7.IV.2007
, fl.,
K.C. Silva
2, 5
(RB,
RBR
)
;
7.VII.2007
, fr.,
K.C. Silva
17
(RB,
RBR
)
;
12–13.X.2007
, fr.,
K.C. Silva
20
(RB,
RBR
)
;
9.I.2010
, fl.,
K.C. Silva
63
(
RBR
)
.
Distribution
:—This species has a wide distribution, occurring from southern
Mexico
, Central America and the West Indies to
Paraguay
. In
Brazil
, it is found in almost all states, usually in open areas (Goldenberg 2009, 2012).
Comments
:—In Marambaia,
M. prasina
occurs in
Restinga
Forest and Dense Submontane Ombrophilous Forest, and it is a great source of food for the local fauna. This species can also be identified by the adult green concolored to subconcolored leaves, the distinctly suprabasal acrodromous venation, and the bilobed connective with latero-ventral lobes, or 3-lobate, due to the presence of a dorsal appendage. Aditional illustrations in
Baumgratz
et al.
(2006)
.