Two New Species of Eugenia (Myrtaceae) from Coastal Brazilian Rainforest

2015·7.9 MB·English

by  Marcos Sobral

New
Two
Eugenia
Species (Myrtaceae) from Coastal
of
Brazilian Rainforest
Marcos
Sobral
(DCNAT),
Departamento de Ciencias Naturais Universidade Federal de Sao Joao del Rei (UFSJ),
36301-160, Sao Minas [email protected]
Joao del-Rei, Gerais,
Brazil,
da
Marcelo Souza
Costa
Universidade Federal Rural do Rio de 23890-000, Seropedica, Rio de
Janeiro, Janeiro, Brazil.
[email protected]
&
Abstract. Two new species of the genus Eugenia L. 1. Eugenia cataphyllea M. C. Souza Sobral, sp.
TYPE:
from mun.
the Atlantic coastal forests of the southeastern nov. Brazil. Espirito Santo, Lin-
Brazilian states of Bahia and Espirito Santo are hares, Reserva Natural da Vale do Rio Doce, 24
compared 4068 RB;
described, illustrated, with related species, Sep. 2001, D. A. Eolli (holotype,
lUCN
BHCB, CVRD,
and
evaluated conservation HUESJ).
in their Eigure
status. isotypes,
1.
&
Eugenia M. Souza
cataphyllea C. Sobral related
is
Cambess., from which
xanthoxyloides
to E. differs
it
Eugenia
Diagnosis. This species related xanthox-
is to
by and
the longer cataphylls, larger pilose leaves, Cambessedes, from which by
yloides distinguished the
is
it
mm
bracteoles persisting after anthesis and pilose flowers. cataphylls to 20 along the twigs (vs. to 10 mm), leaf
mm
X X
& 105 45 and 40 20
blades abaxially pilose
Eugenia M. Souza to (vs. to
Sobral
hispidiflora C.
is
mm
and
glabrous), bracteoles persisting anthesis
at (vs.
apparently related E. hirta 0. Berg, from which
to
and
deciduous), ovaries densely pilose glabrous).
(vs.
can be by and
distinguished longer leaves
its
it
<
densely hispid flowers. Shrub 2 m. Twigs terete, the 2 or 3 distal
mm
30-60 mm, 1-2
internodes diameter,
in
Resumo. Duas novas especies do genero Eugenia <
L.
with white simple trichomes
cylindrical, hirsute,
na Mata da Bahia mm
ocorrentes Atlantica dos estados
e
and by
protected 7 10 pairs of narrowly
1 to
no do
Espirito Santo, sudeste Brasil, sao descritas,
oblong, concave cataphylls, the proximal ones widely
com
comparadas proximas
ilustradas, as especies e < X
mm,
1.5-2
ovate 3 increasingly longer
distally,
cm
5X2
avaliadas sen de conservagao de acordo mm mm
status X
about 10 2 medially, the most
to
com
da lUCN. Eugenia M.
os criterios cataphyllea C. X
mm,
15-20
ones reaching 1.5-2 the most
distal
&
Souza proxima
Sobral e a E. xanthoxyloides
distal ones glabrous or occasionally with scattered
Cambess., mais
diferindo pelos catafilos longos, mm
simple white trichomes 0.5 abaxially, older
to
folhas maiores e pilosas, bracteolas persistentes apos
and
twigs mostly glabrous, without cataphylls
&
M.
a antese e flores pilosas, e E. hispidiflora Sobral
somewhat
Leaves
exfoliating longitudinally. with
Souza aparentemente proxima
C. e a E. hirta 0. Berg,
X
mm,
1-2
1.2-2
mostly
petioles visible abaxially,
da qual se distingue pelas folhas maiores e flores
densely covered with rufescent trichomes
hirsute, to 1
densamente
maiores
e hispidas.
X
mm;
50-105
blades narrowly
or obovate,
elliptic
23-45 mm,
2 2.5 times longer than wide,
to
Keywords: Eugenia^
Atlantic
rainforest, Brazil,
when
lUCN apex
Red discolored dry, lighter abaxially, acute to
Myrtaceae.
List,
5-10 mm,
acuminate in base rounded or cordiform;
mm
<0.1
20 30/mm^,
Eugenia L. a pantropical genus of about 1000 glandular dots, in diameter, to
is
12 15 each
species (Govaeits with 378 species visible abaxially; lateral veins to at side,
ah, 2014),
et
50°-80°,
growing in Brazil (Sobral ah, 2014). The genus leaving the midvein at angles of moderately
et is
common and midvein
in the Atlantic rainforest along the coast of salient adaxially less so abaxially,
&
markedly and prominent
Brazil (Thomaz Monteiro, 1997; Negrelle, 2002; sulcate adaxially abaxially,
&
Amorim Rohm, and brown
ah, 2005; Jesus 2005). During glabrous adaxially with simple white or
et
mm
the examination of collections from the coastal trichomes 0.8-1 abaxially, most dense along the
rainforests of southern Bahia and northern Espirito midvein, marginal veins the inner one 2.5-3 and
2,
mm
Santo, we found two distinctive species of Eugenia the outer one 0.3-1 from the revolute margin.
that are herein proposed as new. Inflorescences terminal, racemiform, axis anthesis
at
Novon 442-446. Published on 9 January 2015. 10.3417/2010087
23:
doi:
Number &
Volume Souza 443
4 Sobral
23,
2014
Eugenia (Myrtaceae) from
Brazil
N
7079
Regislro:
^
MMiTAt’E AE
Fif ilia
III
;
Nome
CiL'iiiitlfo; Eugeru't! sp.
Ntinic ViilHiir: BiiUiigB imebso
CVRD
JVoci-dfncia: R«er\a Nalwal -LINHARES
da ES BRASIL
-
MME
Eslraclii: Mimicipal do Km: Forma
1.9 dc Vida;
TtTreslre
LofiilizilHfin:
AtEustivo
J'oi'le:
Ecojisistcriiii: Capociriio
All Total:
lira 2
do
I'oniia
Kiiste:
do
Altui'a
Fn<>tc:
1
Superficic
d:i r'nsca; AP
C do Fusttr
S
Cor
du Botaoi Branca
Dianiclro da Copa;
J
Cor
dii FI or: Branca
da
Ni'im, Malri*;
Cor
da Exsudof
Ho: Incolor
Evtadapao: Sdva
1
Cor do Maduro:
Fi’uta
De$camapHo:
Cor
do Fruio Inmiuro: Verde
Cult D.AFolli40eS
(a:
Data: 24/Set'20CH
Urteritiinador:
Data:
&
Eugenia M. Souza Image 4068
Figure cataphyllea C. Sobral. of holotype, D. A. Folli (RB).
1.
1X2
X
mm, mm,
4 up
to 5 1 glabrous, with 2 to flowers, protected increasing distally to narrowly elliptic,
X
mm;
basally by 5 6 series of glabrous bracts, these 6 1.5-2 bracts subtending flowers not
to
X
6-8 mm,
and
shining in dried material bearing a mucilaginous observed; pedicels 0.4 hirsute, with
mm;
when
covering (sticky fresh, according to personal white simple trichomes to 0.4 bracteoles oblong
X
4-5 mm.
information by the the basal ones oblong-spathulate, concave, 0.5-1
collector), ovate, to to
57
444 Novon
MME,
mm, 447 (CVRD,
23 HUESJ),
glabrous or with cilia to 0.3 persisting after Get. 2008, G. S. Siqueira
6217
30
Estrada do Aeeiro Bobbio, Get. 2008, D.A. Folli
anthesis, with 5 to 6 pairs of linear colleters 0.5-1.
(CVRD,
HUESJ).
mm
X
1-0.4 buds
adaxial base; flower
0. at
its
X
mm,
4
5 the ovary densely covered with
elliptic, to &
Eugenia M.
hispidiflora Sobral Souza,
2. C. sp.
mm,
5-0.8
white erect trichomes contrasting with
0.
TYPE:
mun.
nov. Espirito Santo, Lin-
Brazil.
the glabrous calyx lobes, these equal or nearly
so,
4,
28
Reserva Natural da Vale do Rio Doce,
hares,
X
mm,
widely 3-3.5 1.8-3 moderately
ovate,
4431 RB;
Nov. 2002, D. A. Eolli (holotype,
concave, patent anthesis, with visible glands
at
CVRD,
HUFSJ).
isotypes Figure
2.
mm
abaxially, with hyaline margin about 0.2 wide
mm;
and 0.2-0.4
petals obovate,
cilia elliptic to
4,
Eugenia
Diagnosis. This species related hirta G.
is to
X
mm,
6-7 5-6
stamens
equal, white, glabrous;
Berg, from which kept apart by larger blades 140
it is its (to
X
3-7 mm,
seventy eighty, anthers subglobose, 0.2 X mm X
to
40 50 30 mm), 2-3.2 times longer than wide
vs. to
X
mm, <
0.3 0.3 eglandular; staminal ring rounded, to 2 1.3-2 times longer than wide), with 16 veins
lateral
(vs.
mm <
each side inflorescences racemiform with axes
in diameter, with scattered white trichomes to 0.2 at (vs. 8),
mm
<
8 8 no
with flowers inflorescences with visible
to (vs.
mm; mm,
10
stigma punctiform,
style to slightly
and
axis, mostly uniflorous or with two flowers), flowers
papilose; ovary 2-locular, with 14 17 ovules per
to
mm,
densely covered with trichomes 2 these more dense
to
mm
immature, 6
locule. Fruits globose, in
to
on the ovary than on the calyx lobes flowers sparsely
(vs.
and mm).
diameter, with white trichomes as the ovary but less uniformly covered with trichomes 0.5
to
crowned by
dense, the calyx lobes; seeds not seen.
<
Shrub 3 m. Twigs the 2 or 3 more
terete, distal
mm
40-60 mm,
0.5-1
internodes diameter,
in
and Eugenia
phenology.
Distribution, habitat,
sometimes
cylindrical, exfoliating longitudinally,
cataphyllea a shrub in rainforests of northern
is
new 1—2
twigs with simple erect white trichomes,
20-60
coastal Espirito Santo, collected altitudes of
at
mm,
1-2
Leaves
m these falling with age. with petioles
Doce
the Vale do Rio Natural Reserve, in the
at
X
mm,
0.8-2
mostly with trichomes
visible abaxially,
known
municipality of Linhares. presently only
It is
mm;
blades ovate-oblong oblong
or lanceolate,
to 1 to
from and
the type material, collected with flowers
X
mm,
60-140 27-43
2-3.2
times longer than wide,
immature September.
in
fruits
when
slightly discolored dry, lighter abaxially,
lUCN and
Red glabrous adaxially with simple erect trichomes
Euge-
Considering
List category. that
mm
1-2
known abaxially, these scattered along the surface
from
nia cataphyllea presently only three
is
same in younger blades and mostly restricted the
from Vale do Rio to
collections the place, the
mm;
12-18
midvein apex acuminate
with
Doce Reserve more age; in
Natural Linhares, detailed
at
information that could help assign an lUCN base cordiform; glandular dots faintly visible abax-
to
it
mm
<
0.1 in diameter, 5 10 per square
conservation category (lUCN, 2012) missing, so ially, to
is
it
DD
midvein moderately and
must be presently scored (Data millimeter; sulcate adaxially
as Deficient).
prominent 12 16 each
veins
abaxially; lateral to at
The
Etymology. presence 70°-80°,
epithet alludes the midvein
to side, leaving the angles of
at
an
of cataphylls in the twigs of this species, moderately markedly and
sulcate adaxially salient
to
uncommon
Eugenia,
character in Brazilian species of abaxially; marginal veins 1 or occasionally the
2,
presently registered only for this species, E. inner one 2-4 mm, the outer one when present 0.5-1
mm
and
xanthoxyloides, the unrelated E. myrciariifolia from the revolute and sometimes undulate
&
Soares-Silva Sobral (for a description, see Soares- margin. Inflorescences terminal or occasion-
axillary,
&
X
2-8 mm,
7-0.8
Silva Sobral, 2004). racemiform,
ally ramiflorous, axis 0.
with 2 6 flowers, then bracts oblong, 0.8-1
to solitary;
Vernacular name. Batinga-melosa 621
X
{Eolli
mm, mm;
0.4 glabrous or with 0.1 pedicels
cilia to
[CVRD,
HUFSJ]).
X
mm,
10-15
0.2—
0.3 uniformly covered with simple
mm;
1-2
erect white trichomes bracteoles triangular,
Eugenia
Relationships. cataphyllea related
to
is
X
mm,
0.5 0.3 glabrous or with trichomes as the
to
Rio
E. xanthxyloides, a species native to the state of
pedicels, persisting after anthesis, colleters not
de Cambessedes,
Janeiro a description, see
(for
X
3-4
buds 4-5.5
observed; flower obpyriform,
1832-1833; 1857-1859), from which
Berg,
is
it
mm,
densely pubescent which
especially in the ovary,
distinguished by the characters presented in the
pubescent
contrasts with the less calyx lobes, these
diagnosis.
X
4-5 mm,
four being 1-1.3 explanate anthesis,
at
markedly
concave, narrowly
elliptic to elliptic,
BRAZIL. mun.
Paratypes. Espirito Santo: Linhares,
markedly
Reserva Natural da Vale do Rio Doee, Antiga Estrada do subequal, adaxially glabrous, abaxially
1 !
Number &
Volume Souza 445
4 Sobral
23,
2014
Eugenia (Myrtaceae) from
Brazil
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myrtaceae
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;
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Fusic: 13
Cor do
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Diainetrt) da Copa:
I
Cor
da Finn
brant da Malrk:
a
Cor
dii E3i!tiidad3t]: Incolor Exsuda^iioi Sdva
Cor
do Maduro:
F'riilo [>csraniacao: Auscntc
do
Ctji InraltinK
I't'iilo
Col
Ola: D.A.Folii 443 Data: 2S/Mov/2002
Dotti'iiuoadiii-: Data:
&
Eugenia M. Image 4431
Figure hispidijlora Sobral C. Souza. of holotype, D. A. Folli (RB).
2.
X
1- mm,
glandulose and hispid with erect simple trichomes anthers ovate-oblong, 1.5-1. 8 0.6-0. 7 with
mm, mm,
2 margin hyaline for ca. 0.2 with cilia to 0.2 one apical gland; staminal ring subquadrate, gla-
mm <10
<
mm; mm,
petals elliptic, in two slightly unequal pairs, brous, 1 in diameter; style stigma
4,
X
5-7 4-6 mm,
white, glabrous or with apical tufts of punctiform or slightly capitate, moderately papillose;
mm; mm.
5-7
cilia to 0.1 stamens sixty to seventy, ovary 2-locular, with 5 to 9 ovules per locule. Fruits
446 Novon
X We
9-
when 10-12
globose to slightly elliptic, red ripe, Acknowledgments. are grateful to the staff of
mm,
10 with scattered erect trichomes as the flowers, Centro de Pesquisas do Cacau, Itabuna, Bahia, and
at
crowned by the calyx lobes, these sometimes enlarged Reserva Natural da Vale do Rio Doce and Linhares,
at
X
mm;
7 4 seeds observed one per and kind
to as far as fruit, Espirito Santo, for their constant assistance
We
brown and
globose, testa light easily detachable, the to our work. are also grateful to Erika von Sohsten
embryo and no
with fused cotyledons visible Medeiros and Rafaela Forzza from Jardim Botanico do
hypocotyl. Rio de kind
Janeiro for their assistance in the
preparation of the figures and Sara Fuentes and
to
and Eugenia
phenology.
Distribution, habitat,
anonymous who
two reviewers, contributed
signifi-
hispidiflora a shrub in rainforests along the coastal
is
cantly improving our manuscript.
to
and
regions of northern Espirito Santo southern
20-60
Bahia, found elevations of m. Flowers have
at
Literature Cited
been November, and
January
collected in fruits in
&
W.
Amorim, Thomas,
A., P. Fiasehi, Jardim, B. Clifton
and J.
February.
A. M. Carvalho. 2005. The vaseular plants of a forest
1726-1752.
fragment in southern Bahia, Brazil. Sida 21:
lUCN
Red Eugenia
category.
List hispidiflora
is
&
W.
Baehman,
Moat, A. de Torre
Hill, la B. Seott.
S.,
J. J.
known
from
presently three municipalities; plotting
Red
2011. Supporting List threat assessments with
known
an GeoCAT:
the presently distribution results in extent Geospatial eonservation assessment
tool.
ZooKeys 117-126.
km^ 150: <http://geoeat.kew.org>
of occurrence of 10,777 (geographical referenc-
1857-1859. 574 von
& Berg, 0. Myrtaeeae. K.
P. in F. P.
Melo 596
except Eranga,
for Oliveira, Silva
es,
Martins Flora Brasiliensis, Vol. R.
(editor), 14, Pt. 1.
[HUEFS,
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are the municipalities
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in
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an Vulnerable (VU)
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M.
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(lUCN,
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Landmm,
L. R. K. Matsumoto, F. F. Mazine, E. Nie
no additional information about occurrence in
is its
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between &
the area the collection considering
sites; World
E. Lueas. 2014. eheeklist of seleeted plant
new <www.kew.org/wesp>,
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this, until collections a
2014.
seems more
adequate
evaluation, score the
to
it
lUCN
lUCN. 2012. Red and
Categories
List Criteria,
DD
conservation status of E. hispidiflora as (Data
lUCN
Version seeond Prepared by
the
edition.
3.1,
Deficient).
Commission lUCN,
Speeies Survival Gland, Switzerland,
and Cambridge, United Kingdom.
<http://jr.iuenredlist.
The
Etymology. epithet alludes the covering of
to
org/doeuments/redhst_eats_erit_en.pdf>, aeeessed 5
Oetober 2014.
firm erect trichomes of the flowers of this species.
&
M. Rohm. 2005. da Mata
Jesus, R. Fitossoeiologia
S.
Bob
Atlantiea de tabuleiro. Teen. Soe. Invest. Florest. 19:
Eugenia
Relationships. hispidiflora related to
is
I-I36.
1857-1859:
E. hirta a description, see Berg,
(for
Negrelle, R. 2002. The Atlantie Forest in the Volta Velha
from which
a species native Bahia,
574), to is A
it
Reserve: tropieal rain forest site outside the tropies.
&
by
distinguished the characters cited in the diagno- 887-919.
Biodivers. Conserv. II:
&
M. 2004. Eugenia
Soares-Silva, L. Sobral. myrciariifolia
sis.
new Novon
(Myrtaeeae), a speeies from Parana,
Brazil.
236-238.
Paratypes. BRAZIL. Bahia: man. Camacan, estrada a 14:
&
M. Mazine
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FBI0338>,
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