Flora of Cameroon - Annonaceae Vol 45
Author
Couvreur, Thomas L. P.
https://orcid.org/0000-0002-8509-6587
IRD, DIADE, Univ Montpellier, Montpellier, France & Universite de Yaounde I, Ecole Normale Superieure, Departement des Sciences Biologiques, Laboratoire de Botanique systematique et d'Ecologie, B. P. 047, Yaounde, Cameroon & Naturalis Biodiversity Center, Botany Section, Darwinweg 2, 2333 CR Leiden, Netherlands
thomas.couvreur@ird.fr
Author
Dagallier, Leo-Paul M. J.
https://orcid.org/0000-0002-3270-1544
IRD, DIADE, Univ Montpellier, Montpellier, France
Author
Crozier, Francoise
IRD, DIADE, Univ Montpellier, Montpellier, France
Author
Ghogue, Jean-Paul
Universite de Yaounde I, Ecole Normale Superieure, Departement des Sciences Biologiques, Laboratoire de Botanique systematique et d'Ecologie, B. P. 047, Yaounde, Cameroon & Green Connexion, Environmental Group, siege face GP Melen, a cote de l'immeuble Palais des verres. Yaounde, Cameroun
Author
Hoekstra, Paul H.
Naturalis Biodiversity Center, Botany Section, Darwinweg 2, 2333 CR Leiden, Netherlands
Author
Kamdem, Narcisse G.
Universite de Yaounde I, Ecole Normale Superieure, Departement des Sciences Biologiques, Laboratoire de Botanique systematique et d'Ecologie, B. P. 047, Yaounde, Cameroon
Author
Johnson, David M.
https://orcid.org/0000-0003-2896-7419
Department of Botany-Microbiology, Ohio Wesleyan University, Delaware, OH, 43015, USA
Author
Murray, Nancy A.
Department of Botany-Microbiology, Ohio Wesleyan University, Delaware, OH, 43015, USA
Author
Sonke, Bonaventure
https://orcid.org/0000-0002-4310-3603
Universite de Yaounde I, Ecole Normale Superieure, Departement des Sciences Biologiques, Laboratoire de Botanique systematique et d'Ecologie, B. P. 047, Yaounde, Cameroon
text
PhytoKeys
2022
2022-09-20
207
1
532
http://dx.doi.org/10.3897/phytokeys.207.61432
journal article
http://dx.doi.org/10.3897/phytokeys.207.61432
1314-2003-207-1
29CD4EF8FB525DBAA022DF25CDB649C9
Uvaria mollis Engl. & Diels, Notizbl.
Konigl
. Bot. Gart. Berlin 2: 295, 1899
Fig. 105
; Map 14B
≡ Uva mollis
(Engl. & Diels) Kuntze, Kuntze, Deutsche Bot. Monatsschr. 21: 173, 1903.
Type
.
Cameroon
.
South Region
; Bipindi,
Zenker G.A.
&
Staudt A.
3
, no date:
lectotype
, here designated: K[K000198767]
.
Description.
Liana(?), unknown height, d.b.h. unknown.
Indumentum of fasciculate hairs
; old leafless branches sparsely pubescent to glabrous,
young foliate branches tomentose
. Leaves: petiole 2-5 mm long, 1-2 mm in diameter, tomentose, slightly grooved, blade inserted on top of the petiole; blade 13-16 cm long, 5-7 cm wide, oblong to elliptic, apex acuminate, acumen 1.5-2 cm long,
base subcordate
, subcoriaceous,
below pubescent with fasciculate hairs
when young and old,
above glabrous
when young and old; midrib sunken or flat,
above densely pubescent
when young, pubescent when old, below densely pubescent when young or old; secondary veins
14 to 17 pairs
,
prominent
and pubescent above;
tertiary venation reticulate
. Individuals bisexual; inflorescences ramiflorous on young branches, leaf-opposed or extra axillary. Flowers with 9 perianth parts in 3 whorls,
1 per inflorescence
;
pedicel 30-40 mm long
, ca. 2 mm in diameter, tomentose; bracts 2, one basal and one in the upper half of pedicel, basal bract 1-2 mm long, 1-2 mm wide; upper bract 2-3 mm long, 4-7 mm wide; sepals 3, valvate, free, 4-7 mm long, 5-6 mm wide, ovate, apex acute, base truncate, pubescent outside, inside not seen, margins flat; petals free, inner slightly smaller than outer; outer petals 3, 20-23 mm long, 11-14 mm wide, elliptic, apex rounded, base truncate, margins revolute, pubescent outside, inside not seen; inner petals 3, imbricate, 14-16 mm long, 16-17 mm wide, ovate to suborbicular, apex rounded, base ungulate, claw ca. 5 mm long, margins flat or revolute, pubescent outside, glabrous inside; stamens 300 to 400, in 6 to 7 rows, 1-2 mm long, linear; connective discoid, pubescent; staminodes absent; carpels free, number unknown, ovary ca. 3 mm long, stigma coiled, densely pubescent. Fruits unknown.
Distribution.
endemic to Cameroon, known from the Central and South regions.
Habitat.
A rare species; in lowland primary rain forests. Altitude 200-800 m a.s.l.
Local and common names known in Cameroon.
None recorded.
IUCN conservation status.
Not evaluated.
Uses in Cameroon.
None reported.
Notes.
Uvaria mollis
is an imperfectly known species. Morphologically, it resembles
U. lastoursvillensis
Pellegr., a Gabonese endemic (
Pellegrin 1949
;
Le Thomas 1969b
) by its leaves with clearly impressed secondary veins looping towards the margin, the overall dense pubescence in the younger branches and flowers, and the single terminal flower at the end of young foliate branches. However,
U. mollis
is less pubescent with much shorter hairs leading to a very different aspect, and the inner petals are unguiculate with a long claw (ca. 5 mm), suggesting they are different species. In the absence of more material, we follow
Le Thomas (1969b)
and keep them separate.
The name
U. mollis
was first used for a South Asian species (
Uvaria mollis
Wall.) given in the "Wallich Catalogue" (
Wallich 1832
, catalogue number 6475), but this name is a nom. nud. In Flora Indica,
Hooker and Thomson (1855
p. 135) considered this name to be a synonym of
Unona pannosa
Dalzell (
Dalzell 1851
) (which is now
Meiogyne pannosa
(Dalzell) J.Sinclair). We found no evidence that the Wallich name was used again (e.g.
Turner 2018
), rendering the name
U. mollis
Engl. & Diels as described by
Engler and Diels (1899)
valid.
We chose here the specimen
Zenker & Staudt 3
(K) as the lectotype. It was a hard decision, because according to JSTOR the only two specimens of the syntypes that remain are in NY (
Zenker 475
) and K (
Zenker & Staudt 3
). Neither of these specimens have flowers or fruits, and are thus poor specimens to choose as a lectotype. However, we know that the specimens deposited in B did have flowers, as this was indicated by
Engler and Diels (1901
, p. 29). It is probable that they got destroyed or have just not been identified as type material. However, we had access to Annick Le
Thomas's
archives in P when she was preparing the "Flore du Cameroun" (but never finalized it). In those archives there is an illustration of
U. mollis
with a flower (see Fig.
105
) which was drawn from
Zenker & Staudt 3
. This indicates that Le Thomas had access to a specimen of
Zenker & Staudt 3
with flowers, suggesting that a better specimen might be available and could be located (possibly in P or B). At this point we have no proof that another specimen of
Zenker 475
is available.
Map 14.
A
Uvaria klaineana
B
Uvaria mollis
C
Uvaria muricata var. yalingensis
D
Uvaria obanensis
E
Uvaria osmantha
F
Uvaria poggei
G
Uvaria scabrida
H
Uvariastrum insculptum
I
Uvariastrum pierreanum
. White borders represent region limits in Cameroon; green patches represent protected areas (see methods and Suppl. material 1: Fig. S1).
Specimens examined.
Central Region
:
Yaounde
,
3.87°N
,
11.52°E
,
1890
,
Zenker G.A.
249 (B);
Yaounde
,
3.87°N
,
11.52°E
,
Zenker G.A.
3 (K);
Yaounde
,
3.06°N
,
10.38°E
,
01 January 1913
,
Zenker G.A.
475 (NY).
East Region
: Bitya near
R Ja Nsolo
,
3.02°N
,
12.37°E
,
31 March 1921
,
Bates G.L.
1818 (K)
.