A taxonomic revision of the genus Noronhia Stadtm. ex Thouars (Oleaceae) in Madagascar and the Comoro Islands
Author
Hong-Wa, Cynthia
Missouri Botanical Garden P. O. Box 299 St. Louis MO 63166 - 0299 U. S. A & Claude E. Phillips Herbarium Delaware State University 1200 N. DuPont Hwy, Dover DE 19901 - 2277 U. S. A.
chwa@desu.edu
text
Boissiera
2016
2016-10-21
70
1
292
journal article
10.5281/zenodo.7599432
f2ceb54b-e71d-4433-9e67-b75b62f8a902
978-2-8277-0086-8
0373-2975
7599432
31.
Noronhia grandifolia
H. Perrier
in Mém.Inst.Sci.
Madagascar
,Sér.B, Biol.Vég.2:299.
1949 (
Fig. 22C
).
Typus
:
M
ADAGASCAR. Prov.
Toamasina
:
Est
,
Masoala
, [
15°17’S
50°11’E
],
300 m
,
X.1912
,
Perrier de la Bâthie
2167
(holo-:
P
[
P00418111
]!)
.
Description
Shrubs
to trees to
10 m
tall, trunk to
20 cm
diameter; young twigs cylindrical,
1-5 mm
diameter, glabrous; bark light brown, smooth to slightly rugose.
Leaves
opposite, persistent; bud scales rarely persistent; blades dark green above, lighter below, oblong, 7-23
3
3-8 cm
, chartaceous, glabrous, domatia absent, base acute to rounded, margin slightly undulate, apex acuminate, the acumen
2-19 mm
long, midrib slightly sunken above, distinctly raised below, secondary veins conspicuous, 7-16 per side,
11-40 mm
apart, looping
3-8 mm
from the margin; petiole medium gray, 8-20
3
1.5-3.5 mm
, entirely woody, glabrous.
Thyrses
fasciculate, pauciflorous, diffuse; peduncle
5-23 mm
long, densely pubescent; pedicel
7-12 mm
long, densely pubescent; calyx densely pubescent on both sides, lobes triangular, 1.5-2
3
1.5-1.8 mm
; corolla purplish, sometimes tinged yellow, subrotate,
4.5-6 mm
long, sparsely pubescent outside, glabrous inside, the tube
2-3 mm
long, lobes ovate, apex obtuse; corona absent; stamens
2-2.8 mm
long, anthers obovate,
1.2-1.5 mm
long; pistil
2.5-3 mm
long, stigma capitate.
Fruiting pedicel
8-28
3
1-3 mm
; young fruits green, purple when mature, subglobose, 13.5-23.5
3
13-24.5 mm
, surface smooth, apex apiculate; dry pericarp
0.4-2.2 mm
thick; endocarp crustaceous; seed 10.5-20
3
7.5-14 mm
.
Distribution, ecology and phenology
Noronhia grandifolia
occurs in low- to high-elevation humid forests from Daraina in the north to Andohahela in the south (
Fig. 19
). It produces flowers and fruits throughout the year, with a peak between October and February.
Conservation status
With 23 collections representing 21 localities, the assessment indicated an EOO of
104,491 km
2
, an AOO of
84 km
2
, and 21 subpopulations representing 17 locations, of which 10 occur within protected areas (Andohahela, Anjanaharibe-Sud, Corridor Ambositra-Vondrozo, Loky-Manambato, Makira, Mantadia, Marojejy, Masoala, Ranomafana, and Tsaratanana-Ambohimirahavavy-Corridor Marojejy). Being so widespread and well represented within the network of protected areas,
N. grandifolia
is assigned a preliminary status of “Least Concern”.
Notes
Noronhia grandifolia
can be recognized by its large, chartaceous leaf blades, pubescent inflorescences, purplish-yellow flowers that lack a corona, and subglobose, crustaceous fruits subtended by long pedicels.
118
Boissiera 70
Additional specimens examined
MADAGASCAR
.
Prov.
Antsiranana
:
Anjanaharibe-Sud
RS,
10 km
SW of Befingotra
,
14°45’S
49°29’E
,
1100-1300 m
,
7.IX.1997
,
Birkinshaw
et al. 468
(
MO
,
P
,
TAN
)
;
Daraina
, forêt
d’Antsahabe
,
13°13’08”S
49°33’04”E
,
890 m
,
2.XII.2004
,
Gautier
4803
(
Daraina
,
G
,
MO
,
P
,
TEF
)
;
Andapa
,
Marojejy PN
,
14°28’57”S
49°38’12”E
,
1100-1600 m
,
19-24.
I
.1994
,
Malcomber
et al. 2701
(
MO
,
P
,
TAN
)
;
Andapa
,
Ambodisatrana
,
14°32’S
49°26’E
,
1100-1200 m
,
3.VIII.1997
,
McPherson
17197
(
K
,
MO
)
;
Anjanaharibe-Sud
RS,
14°44’42”S
49°27’42”E
,
1185-1335 m
,
3.XI.1994
,
Ravelonarivo
&
Rabesonina
494
(
MO
,
TAN
)
;
ibid. loc.
,
14°12’S
49°27’E
,
1100 m
,
13-18.IX.1996
,
Ravelonarivo
et al. 1034
(
MO
,
P
,
TAN
)
;
Sambava
,
Andratamarina
,
Bemanasy
,
14°23’54”S
49°50’55”E
,
892 m
,
23.X.2010
,
Ravelonarivo
&
Raharivelo
3568
(
MO
,
P
,
TAN
)
;
Ambatoharanana
, [
14°18’S
49°33’E
],
460 m
,
9.VII.1963
,
Service Forestier
21629
(
MO
,
TEF
)
.
Prov.
Fianarantsoa
:
Ranomafana
PN,
Parcelle
3,
21°16’06”S
47°25’30”E
,
923 m
,
8.
V
.2010
,
Hong-Wa &
Ortiz
670
(
MO
,
P
,
TAN
)
;
entre
Ivohibe RS
et
Andringitra PN
,
22°25’36”S
46°56’18”E
,
955 m
,
14.XI.1997
,
Messmer
et al. 573
(
G
,
MO
,
P
)
.
Prov.
Mahajanga
:
Befandriana-Nord
,
Matsoandakana
,
Andranomena
, forêt
d’Anjiabe
,
15°08’14”S
49°21’27”E
,
1084 m
,
12.
II
.2008
,
Ravelonarivo
et al. 2798
(
G
,
MO
,
P
,
TAN
)
.
Prov.
Toamasina
:
Maroantsetra
,
Anjahana
,
Ambodivoangy
,
15°25’30”S
49°50’50”E
,
100 m
,
20.VII.2002
,
Antilahimena
1226
(
MO
,
P
)
;
Vinanibe
,
Andongona
,
Makira
,
15°27’40”S
49°17’46”E
,
1153 m
,
28.XI.2003
,
Antilahimena
2420
(
G
,
MO
)
;
Analamazaotra RS
,
18°49’32”S
48°26’04”E
,
941 m
,
3.
V
.2010
,
Hong-Wa &
Ortiz
662
(
MO
,
TAN
)
;
Masoala Peninsula
,
1-3 km
S
of Ambanizana
,
15°38’S
49°58’E
,
0-10 m
,
7.XII.1990
,
Schatz
&
Modeste
3020
(
G
,
MO
,
P
,
TAN
)
.
Prov.
Toliara
:
Andohahela
, path over
Col Antanatana
to
Iminiminy
,
24°44’S
46°47’E
,
800 m
,
7.XII.1989
,
Du Puy
et al.
MB525
(
TAN
)
;
Andohahela
(parcel 1),
Marovoalavo
(
Ebaketra
),
24°38’11”S
46°50’42”E
,
16.
V
.1996
,
Randriamampionona
1125
(
G
,
MO
)
.