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New Callicarpa (Lamiaceae) taxa: Two species and a natural hybrid from Hahajima Island, Ogasawara Islands, Japan
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Abstract
Two newly identified species of
Callicarpa
(Lamiaceae),
C. boninensis
and
C. hahajimensis
, along with a new natural hybrid,
C
. ×
chibusensis
are described, all of which were identified on Hahajima Island, Ogasawara Islands, Japan. A comprehensive key to
Callicarpa
species in the Ogasawara Islands is also provided.
Callicarpa boninensis
, morphologically most similar to
C. subpubescens
, is distinguished by persistent stellate hairs on mature leaves and elongated petioles.
Callicarpa hahajimensis
, resembling
C. parvifolia
in the Chichijima Islands, differs in its reduced stellate hair density on both leaf surfaces and thinner leaves.
Callicarpa
×
chibusensis
, considered a natural hybrid between
C. subpubescens
and
C. boninensis
, is characterized by intermediate stellate hair densities—higher than in
C. subpubescens
but lower than in
C. boninensis
—on both leaf surfaces, smaller leaves than those of
C. subpubescens
, and a distinct flowering phenology relative to that of
C. boninensis
.
Title: New
Callicarpa
(Lamiaceae) taxa: Two species and a natural hybrid from Hahajima Island, Ogasawara Islands, Japan
Description:
Abstract
Two newly identified species of
Callicarpa
(Lamiaceae),
C.
boninensis
and
C.
hahajimensis
, along with a new natural hybrid,
C
.
×
chibusensis
are described, all of which were identified on Hahajima Island, Ogasawara Islands, Japan.
A comprehensive key to
Callicarpa
species in the Ogasawara Islands is also provided.
Callicarpa boninensis
, morphologically most similar to
C.
subpubescens
, is distinguished by persistent stellate hairs on mature leaves and elongated petioles.
Callicarpa hahajimensis
, resembling
C.
parvifolia
in the Chichijima Islands, differs in its reduced stellate hair density on both leaf surfaces and thinner leaves.
Callicarpa
×
chibusensis
, considered a natural hybrid between
C.
subpubescens
and
C.
boninensis
, is characterized by intermediate stellate hair densities—higher than in
C.
subpubescens
but lower than in
C.
boninensis
—on both leaf surfaces, smaller leaves than those of
C.
subpubescens
, and a distinct flowering phenology relative to that of
C.
boninensis
.
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