Taxonomic studies of Diospyros (Ebenaceae) from the Malagasy region. V. Synoptic revision of the Bernieriana group in Madagascar and the Comoro Islands
Author
Schatz, George E.
Author
Lowry Ii, Porter P.
Author
Phillipson, Peter B.
text
Candollea
2020
2020-10-29
75
2
203
218
journal article
20585
10.15553/c2020v752a5
578cdd61-88f5-4677-a128-6c5ab7e37fe3
2235-3658
5724867
7.
Diospyros torquata
H. Perrier
in Mém. Inst. Sci.
Madagascar
, Sér. B, Biol. Vég. 4: 112. 1952.
Lectotypus
(designated by SCHATZ & LOWRY, 2011: 280):
MADAGASCAR
.
Reg.
Boeny
[Prov.
Mahajanga
]:
baie d’Amboanio
, près de
Majunga
,
II.1911
, fr.,
Perrier de la Bâthie
1823
(
P
[
P00573702
]!)
.
=
Diospyros torquata
var.
mabaoides
H. Perrier
in Mém. Inst. Sci Madag., sér. B, 4: 112 (1952).
Lectotypus
(designated by SCHATZ & LOWRY, 2011: 280):
MADAGASCAR
. Reg.
Boeny
[Prov.
Mahajanga
]:
près de la mer,
Majunga
,
I.1929
,
♀
fl., fr.,
Perrier de la Bâthie
13468
(
P
[
P00573703
]!; isolecto-:
P
[
P00573704
,
P00573705
]!).
Distribution and ecology
. –
Diospyros torquata
is distributed in dry deciduous forest on sand from Boriziny south to the Kirindy forest north of Morondava (
MADAGASCAR
CATALOGUE, 2020
), at an elevation of
0–
242 m
.
Vernacular names.
– “Hazomalandy” (
Ramananjanahary 52
); “Hazomintina” (
Service Forestier 34798
); “Kehazalahy” (
Service Forestier 19040
).
Conservation status
. –
Diospyros torquata
has a geographic range in the form of an EOO of
74,659 km
² and a minimum AOO of
60 km
². It is present in the Ankarafantsika National Park. At other localities, it is threatened by fire, forest clearing for agriculture, grazing, and exploitation for firewood and construction material, all of which are projected to result in continuing decline. With respect to the principal threat of forest clearing for agriculture, it exists at fourteen locations.
Diospyros torquata
can therefore be assessed for its risk of extinction as “Near Threatened” [NT], as it nearly qualifies for “Vulnerable” under criterion B2 (
IUCN, 2012
).
Notes
. –
Diospyros torquata
can be distinguished from other members of the Bernieriana group by its flat lamina and fruit completely enclosed within the accrescent calyx (
Fig. 6C
), the portion extending above the fruit tubular to narrowly conical and unlobed. The
var.
mabaoides
was described to accommodate 6-locular fruit, which nevertheless exhibited a 4-merous corolla, variation that
PERRIER DE LA BÂTHIE (1952b)
had observed within the population at the baie d’Amboanio, the
type
locality of
D. torquata
.
The
type
collection of
Diospyros torquata
was incorrectly cited in the protologue as
Perrier de la Bâthie 1923
(
PERRIER DE LA BÂTHIE, 1952a
).
Additional material examined
. –
MADAGASCAR
.
Reg.
Betsiboka
[Prov.
Mahajanga
]:
Tsinainaondry
, près
Antaliha
,
12.II.1958
, fr.,
Service Forestier
19040
(
P
[2 sheets]).
Reg.
Boeny
[Prov.
Mahajanga
]:
Ambatoboeny
,
Tsaramandroso
,
18.IV.2007
, fr.,
Miandrimanana et al.
100
(
MO
,
P
,
TAN
)
;
Ankarafantsika
AP,
25.II.2019
, ster.,
Randrianaivo
&
Rakotovao
3347
(
DBEV
,
MO
,
P
,
TAN
,
ZT
)
;
ibid. loco
,
4.IV.1933
, fr.,
Service Forestier
55
(
P
)
;
ibid. loco
,
30.III.1952
, fr.,
Service Forestier
5485
(
P
,
TEF
)
;
Antsanitia
,
7.I.2000
, fr.,
Rakotonasolo
130
(
K
,
P
,
TAN
)
;
Benetsy
,
1965
, ster.,
Service Forestier
24274
(
G
,
MO
,
P
,
TEF
)
;
Mahajanga
,
24.XI.1965
, fr.,
Service Forestier
24303
(
P
[3 sheets],
TEF
)
;
ibid. loco
,
24.XI.1965
,
♂
fl.,
Service Forestier
24298
(
MO
,
P
[2 sheets])
;
ibid. loco
,
25.II.2019
, ster.,
Randrianaivo
&
Rakotovao
3348
(
DBEV
,
MO
,
P
,
TAN
,
ZT
)
;
Tsimaloto
,
Marovoay
,
18.II.1997
,
Service Forestier
34798
(
TEF
)
;
Vallée du Menavava
,
XII.1905
, fr.,
Perrier de la Bâthie
8777
(
P
[2 sheets]).
Reg.
Melaky
[Prov.
Mahajanga
]:
Ankiloty
,
22.II.1957
, fr.,
Service Forestier
16713
(
MO
,
P
,
TEF
)
;
Beanka
,
17.III.2012
, fr.,
Hanitrarivo et al.
356
(
G
,
MO
,
P
).
Reg.
Menabe
[Prov.
Toliara
]:
Kirindy Forest
,
13.II.2010
, fr.,
Phillipson et al.
6146
(
G
,
K
,
MO
,
P
,
TAN
).
Reg.
Sofia
[Prov.
Mahajanga
]:
S de
Boriziny
,
16.XI.2004
, fr.,
Ramananjanahary
52
(
MO
,
P
,
TEF
).