Nomenclatural notes on Cryptocarya R. Br. (Lauraceae) from Madagascar
Author
van der Werff, Henk
Missouri Botanical Garden, P. O. Box 299, St. Louis, MO, 63166 - 0299, U. S. A
henk.vanderwerff@mobot.org
text
Candollea
2013
2013-12-01
68
2
303
306
journal article
3418
10.15553/c2012v682a14
017e2143-04a5-43f8-a28a-724562013398
2235-3658
5706291
Cryptocarya polyneura
(Kosterm.) van der Werff
,
comb. nova.
Ξ
Ravensara polyneura
Kosterm.
in Bull. Jard. Bot. Etat
Bruxelles 28: 188. 1958
.
Typus
:
MADAGASCAR
.
Prov.
Toamasina
:
Manakambahiny
Est,
Ambatodrazaka
,
Zahamena
,
28.II.1950
, fl.,
Réserves Naturelles 1936
(holo-:
P
[
P00540957
]; iso-:
P
[
P00540955
,
P00540956
,
P00853160
]!,
TEF
[
TEF000291
]).
Observations
.–The
type
of
Ravensara polyneura
is only in bud. Kostermans cited four additional collections, with flowers or fruits, but did not include those in his description. This species has long and narrow,coriaceous leaves, at least three times as long as wide, dark green when dry and with an obtuse to rounded base. Mature leaves are glabrous and the midrib and lateral veins are raised on the lower surface. The inflorescences are short, to
3 cm
, densely dark brown pubescent with nearly sessile flowers arranged in dense clusters. The young growth has a similar dark brown pubescence as the flowers and inflorescence, but the twigs become soon glabrous. The fruits are ruminate.
Recent collections all come from the area between Moramanga and the Zahamena reserve at altitudes between 900 and
1160 m
.
This species has been confused with
Cryptocarya pervillei
Baill.
, another species with long and narrow leaves. It differs in having a light brown to golden brown indument (not dark brown), less coriaceous leaves with a more persistent indument. I had previously identified
Rakotomalaza 1334
and
Andriatsiferana & al. 2109
as
C. myristicoides
Baker
, but that species has stiffly chartaceous (not coriaceous) leaves with immersed veins, and longer, less condensed inflorescences. The collection
Antilahimena 5915
was previously identified as
C. acuminata
Merr.
(an error for
Ravensara acuminata
(Meisn.) Baill.
=
Cryptocarya litoralis
van der Werff
), acoastal species also with less coriaceous leaves, brown pubescence (not dark brown) and often conduplicate (rather than flat) leaves. Duplicates may have been distributed under these identifications.
Recent collections seen
. –
MADAGASCAR
. Prov.
Toamasina
:
Phelps Dodge
project site,
15 km
NE of Moramanga
,
18º51’02’’S
48º18’24’’E
,
950 m
,
13.II.1997
, fl.,
Andriatsiferana
& al. 2109
(
MO
)
;
Moramanga
,
Andasibe
,
Ambatovy forest
,
18º48’29’’S
48º18’50’’E
,
1060 m
, fr.,
Antilahimena
& al. 3004
(
MO
)
;
Moramanga
,
Andasibe
,
Menalamba
,
18º51’06’’S
48º18’39’’E
,
1119 m
,
18.XII.2005
, fr.,
Antilahimena
&
Edmond
4457
(
MO
)
;
Moramanga
,
Ambohibary
,
Ambatovy
/
Andranovery forest
,
18º52’04’’S
48º18’15’’E
,
1031 m
,
24.X.2007
, fr.,
Antilahimena
&
Marcellin
5915
(
MO
)
;
Moramanga
,
Andasibe
:
Forêt d’Analamay
,
18º50’51’’S
48º19’29’’E
,
990 m
,
8.VI.2007
, fr.,
Bernard
559
(
MO
)
;
Route Analamay
,
18º49’47’’S
48º18’48’’E
,
1160 m
,
16.V.1997
, y. fr.,
Rakotomalaza
& al. 1334
(
MO
)
.
Réserve forestiÈre Sandrangato
,
Moramanga
,
30.X.1964
, fr.,
Service Forestier
21904
(
MO
)
;
Périnet
,
Analamazaotra
,
Moramanga
,
28.IX.1966
, fr.,
Service Forestier
26105
(
MO
)
.