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Didelotia gracillima Jongkind, sp. nov. (Leguminosae, Detarioideae), a new forest tree from Liberia and Ivory Coast

Author: Jongkind, Carel C. H.
Publisher: Zenodo
DOI: 10.5252/adansonia2019v41a8
Source: https://zenodo.org/records/4602173/files/source.pdf
2019 ● 41 ● 8
adansonia
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F. Ghah emaninejad (Kha azmi Uni e si y, Téhé an)
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K. Kubi zki (Ins i u ü Allgemeine Bo anik, Hambu g)
J.-Y. Lesoue (Conse a oi e bo anique de B es )
P. Mo a (Muséum na ional d’His oi e na u elle, Pa is)
J. Munzinge (Ins i u de Reche che pou le Dé eloppemen , Mon pellie )
S. E. Rako oa isoa (Millenium Seed Bank, Royal Bo anic Ga dens Kew, Madagasca Conse a ion Cen e, An anana i o)
É. A. Rako obe (Cen e d’Applica ions des Reche ches pha maceu iques, An anana i o)
P. H. Ra en (Missou i Bo anical Ga den, S . Louis)
G. Tohmé (Conseil na ional de la Reche che scien i ique Liban, Bey ou h)
J. G. Wes (Aus alian Na ional He ba ium, Canbe a)
J. R. Wood (Ox o d)
cou e u e / co E :
Didelo ia g acillima Jongkind, sp. no .
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69
ADANSONIA, sé . 3 • 2019 • 41 (8)
© Publica ions scien i iques du Muséum na ional d’His oi e na u elle, Pa is. www.adansonia.com
MOTS CLÉS
A ique,
Amhe s ieae,
Fabaceae,
espèce nou elle.
KEY WORDS
A ica,
Amhe s ieae,
Fabaceae,
new species.
Jongkind C. C. H. 2019. — Didelo ia g acillima Jongkind, sp. no . (Leguminosae, De a ioideae), a new o es ee
om Libe ia and I o y Coas . Adansonia, sé . 3, 41 (8): 69-74. h ps://doi.o g/10.5252/adansonia2019 41a8. h p://
adansonia.com/41/8
ABSTRACT
A new ee species, Didelo ia g acillima Jongkind, sp. no ., om Libe ia and I o y Coas is desc ibed.
I di e s om D. b e ipanicula a J. Léona d, wi h which i was ea lie con used, by i s na owe and
pendulous in lo escence and i s ed lowe s and much longe s amens.
RÉSUMÉ
Didelo ia g acillima Jongkind, sp. no ., une nou elle espèce d’a b e o es ie du Libe ia e de Cô e d’I oi e.
Une nou elle espèce d’a b e, Didelo ia g acillima Jongkind, sp. no , du Libe ia e de la Cô e d’I oi e,
es déc i e. Elle se dis ingue de D. b e ipanicula a J. Léona d, a ec laquelle elle a é é p écédemmen
con ondue, pa son in lo escence pendan e à leu s ouges e des é amines plus longues.
Ca el C. H. JONGKIND
Bo anic Ga den Meise, Nieuwelaan 38, 1860 Meise (Belgium)
[email p o ec ed]
Submi ed on 28 No embe 2018 | accep ed on 12 Ap il 2019 | published on 17 June 2019
Didelo ia g acillima Jongkind, sp. no . (Leguminosae,
De a ioideae), a new o es ee om Libe ia and I o y Coas
70 ADANSONIA, sé . 3 • 2019 • 41 (8)
Jongkind C. C. H.
INTRODUCTION
The genus Didelo ia Baill. is now pa o ibe Amhe s ieae
(Es ella e al. 2018) o Leguminosae sub amily De a ioideae
(LPWG 2017). Including he new species desc ibed he e
he e a e 13 species known in Didelo ia (Bu g 2016), all
o which a e o es ees endemic o he Guineo-Congolian
Region in A ica.
Recen ly a i s lowe ing specimen was collec ed om
a ee ha had always been iden i ied as Didelo ia b e i-
panicula a J. Léona d. These lowe s showed clea ly ha
his Didelo ia, known om Libe ia and I o y Coas , is no
he same species as D. b e ipanicula a s.s. om Came oon
and Gabon. I ha e he e o e chosen o desc ibe i he e as
Didelo ia g acillima Jongkind, sp. no . The in lo escence,
lowe s and ui s o D. g acillima mo e closely esemble
hose o D. engle i Dinkl. & Ha ms, ano he Uppe Guinean
species wi h ed lowe s, han hose o D. b e ipanicula a,
whose in lo escence is mo e sp eading, lowe s a e almos
whi e and s amens a e much sho e (Table 1), and whose
ui s a e mo e ounded a bo h ends.
The e is a signi ican a ia ion among Didelo ia species
in he numbe o lea le s pe lea . They can a y om mo e
han 30 pai s o lea le s, as in D. g acillima, o uni oliola e,
as seen in D. idae J.Léona d, Oldeman & de Wi . Includ-
ing he new species desc ibed he e, i e Didelo ia species
ha e mo e han en pai s o lea le s. Impo an ea u es o
hese species a e compa ed in Table 1. Only one o hem,
D. g acillima, is ound in he Uppe Guinean o es s (sensu
Whi e 1979, wes o Benin). Didelo ia b e ipanicula a is
now es ic ed o Came oon and Gabon.
SYSTEMATICS
Didelo ia g acillima Jongkind, sp. no .
(Figs 1-3)
Didelo ia g acillima Jongkind di e s om D. b e ipanicula a J.
Léona d, wi h which i was ea lie con used, by i s na owe and
pendulous in lo escence, i s ed lowe s and i s much longe s amens
(Table 1).
Types. — Libe ia. K ahn-Bassa Fo es , close o Solo Town on he ITI
oad, l., 30.V.2018, Jongkind, Sambolah, Che i , T ao e & Kamga
14034 (holo-, BR; iso-, E, G, MA, MO, P, WAG).
p
a aTypes
. — I o y Coas . Olodio o G abo, Aub é ille SF 1321 (K,
P); s.l., Aub é ille SF 2801 (P, WAG); Tabou, Aub é ille SF 4167 (P,
WAG); along he oad om G abo o Tabou, 30.IV.1995, B e ele
13394 (MO, S, WAG); nea Tibo o, 12.XII.1997, Jongkind 4209
(WAG); FC de la H Dodo, 7.V.1999, Jongkind & s uden s o he
‘Uni e si é de Cocody’ 4545 (WAG).
Libe ia. Sapo NP, bu e zone, 27.XI.2002, Jongkind, Blyden, s a
& s uden s o he Uni e si y o Libe ia 5462 (WAG); inside Sapo
Na ional Pa k, 15.XI.2010, Jongkind, Bili ogui & Daniels 9718
(WAG); nea oo pa h om Jalay’s Town o G een ille, 27.XI.2010,
Jongkind, Bili ogui & Daniels 9885 (WAG); No h o Sapo NP,
9.IX.2013, Jongkind, de We & Sambolah 11972A (BR); No h o
Sapo NP, 11.IX.2013, Jongkind, de We & Sambolah 11948 (BR,
WAG); c. 50 km eas o G een ille, 15.III.2014, Jongkind, Mulbah,
Ha is, Cha leson & Fo kpah 12590 (BR); eas o Pelloken illage,
5.II.2016, Jongkind & Sambolah 13000 (BR); no a om Buchanan-
G een ille oad, 22.V.2018, Jongkind, Sambolah, Che i , T ao e &
Kamga 13797 (BR, WAG); no a om ITI oad, 28.V.2018,
Jongkind, Sambolah, Che i , T ao e & Kamga 13958 (BR, FHO);
Sino, 5.IV.1962, Voo hoe e & Kunkel 1208 (WAG); c. 32 miles N.
o G een ille, 10.IV.1962, JJFE de Wilde s.n. (WAG).
eTymology. — The speci ic epi he e e s o he slende lea es
and lea le s.
HabiTaT and disT ibuTion. — Lowland o es in Eas Libe ia and
sou h-wes I o y Coas .
desc ipTion
Canopy ee up o c. 40 m high. S em o 1.7 m in diame e .
Ba k dull da k b own. Twigs elu inous o glab escen , hai s
o ange-b own; las shoo wi h se e al o e lapping b own bud
scales a base, bud scales p og essi ely becoming la ge dis ally.
S ipules
Caducous, in used pai s, in ape iola , lanceola e, up o 6 ×
2 cm, wi h pa allel eins, almos glab ous excep o a inge
o hai s on he ma gin; apex bilobed, bo h lobes acu e.
Lea es
Pa ipinna e, o 25 × 7 cm, wi h 21-33 pai s o opposi e lea -
le s; pe iole 2-3 mm long, o ange-b own pubescen ; lea achis
o ange-b own pubescen . Lea le s subsessile, 8-34 × 3-10 mm,
able 1. — Didelo ia species wi h mo e han 10 pai s o lea le s.
Species
Pai s o
lea le s
Apex
lea le s Pedicel
Flowe colou
(as a as no ed)
Pe als and
s amens O a y
Didelo ia g acillima
sp. no .
21-33 ema gina e pubescen comple ely pink o ed ilamen s c. 10 mm,
pe als much sho e
pubescen on he
ma gins
Didelo ia
b e ipanicula a
15-23 ema gina e pubescen ilamen whi e, s yle
whi e, an he s pu plish
pe als and ilamen s
c. 4 mm
pubescen on he
ma gins
Didelo ia minu i lo a 8-12 ema gina e glab ous pe al eddish, ilamen
pu plish
ilamen s c. 5 mm,
pe als much sho e
pubescen all o e
Didelo ia mo elii 26-30 ounded ???almos glab ous
Didelo ia pauli-si ae 14-18 ema gina e a ew hai s
only
ilamen pu plish ilamen s 6-9 mm,
pe als much sho e
almos glab ous
71
New o es ee om Libe ia and I o y Coas
ADANSONIA, sé . 3 • 2019 • 41 (8)
AB
C
D
ig. 1. — Didelo ia g acillima Jongkind, sp. no .: A, lea es om below on a ho izon al b anch o a young ee; B, young shoo , s ill pendulous and s ill wi h g een
s ipules; C, bud scales a he base o he las shoo ; D, base o lea es om abo e showing he downwa d-poin ing i s lea le s. A e Jongkind e al. 9718.
Pho os C. Jongkind.

72 ADANSONIA, sé . 3 • 2019 • 41 (8)
Jongkind C. C. H.
A
C
B
ig. 2. — Didelo ia g acillima Jongkind, sp. no .: A, s em base wi h Da id Mawolo Mulbah in on ; B, in lo escence, lines on backg ound 7 mm apa ; C, p obably
imma u e ui s (he ba ium); A, a e Jongkind e al. 9718; B, a e Jongkind e al. 14034; C, a e B e ele 13394 (WAG). Pho os C. Jongkind. Scale ba : C, 1 cm.
73
New o es ee om Libe ia and I o y Coas
ADANSONIA, sé . 3 • 2019 • 41 (8)
asymme ical, ec angula -oblong, he middle ones la ges ,
g adually dec easing in size owa ds he apex and he base o
he lea , bo h sides somewha glossy, sligh ly pale g een below,
uppe su ace glab ous, lowe su ace wi h a ew small hai s when
young; base asymme ical; apex obliquely ounded, minu ely
ema gina e; mid ib p ominen on lowe su ace; main la e al
ne es nume ous, mo e e iden on lowe su ace, anas omosing
and o ming a ma ginal ne e a a sho dis ance om he edge.
In lo escence
Axilla y,
up o 17 cm long and 4 cm wide, pendan ; wi h
sho , densely lowe ed, la e al axes inse ed al e na ely along
he main axis; wi h se e al basal bud scales, b oadly o a e,
p og essi ely becoming la ge dis ally,
apex bilobed, eins
pa allel, almos glab ous excep o a inge o
hai s
on he
edge; main axis o in lo escence densely pale b own pubescen ;
b ac a base o la e al axis esembling a bud scale.
Flowe s
Flo al b ac caducous, b oadly o a e, up o 5 × 4 mm, eins
pa allel, a ew
hai s
on he ou side, glab ous inside, wi h a inge
o hai s on he edge; pedicel pink, 4-5 mm long, pale b own,
elu inous; b ac eoles 2, al a e when en eloping he bud, el-
lip ic, pinkish ou side and ed inside, 5 × 3 mm, ou side wi h
a ew
hai s
, inside glab ous, ne es pa allel; ecep acle 1 mm
high, 3 mm diam. a he op, glab ous; disk pale b own, 3 mm
diam., 1 mm high, glab ous, cen e dep essed; sepals 5, eddish,
ec angula , c. 1 × 1 mm, glab ous; pe als 5, al e na e o he se-
pals, ed, linea , c. 3 mm long, glab ous; s amens 5, al e na e o
he pe als; ilamen s ed, glab ous, c. 10 mm long; an he s pale
b own, c. 1.3 mm long, glab ous; s aminodes 5, al e na e o he
s amens, ed, ili o m, c. 3 mm long, glab ous; o a y g eenish,
la , oblong, c. 2 mm high, base and ma gins densely hi su e, sides
glab ous; s ipe 0.5 mm long, glab ous; s yle ed, c. 11 mm long,
p oximal pa spa sely hi su e, dis al pa glab ous; s igma capi a e.
F ui s
Oblong- ec angula , dull, glab ous, c. 6 × 2.5 cm, beak o
3 mm long, su u es no winged; one ain longi udinal ein
unning om he base o he apex.
noTes
The ee om which he lowe ing ype specimen was collec ed
was 18 m high. The 40 me e heigh in he species desc ip-
ion is based on he in o ma ion om a single ee (JJFE de
Wilde s.n.) bu knowing he s em diame e om se e al o he
indi iduals (see Fig. 2A) i is likely o be co ec . In o ma ion
om collec ions o he ela ed D. a zelii indica es ha ha spe-
cies can also lowe when s ill ela i ely small (Bu g 2016: 52).
The ui desc ip ion is based on ma e ial collec ed om
he g ound, ha was p obably imma u e (B e ele 13394).
On his line d awing o Didelo ia (Toubaoua e) b e ipanicu-
la a in he “Flo e o es iè e”, Aub é ille (1959: 299) indica ed
ha he lowe is om his collec ion no. 4053 nea G abo, in
sou h-wes I o y Coas . Reg e ably his specimen canno be
ound in he Pa is he ba ium. The illus a ed lowe does no ,
howe e , ag ee wi h hose om he ype specimen ci ed in
his publica ion. The mos likely explana ion is ha Aub é ille
only had lowe buds and no open lowe s, and ha se e al
lowe pa s a e no ully g own ye . The ui shown on his
illus a ion is likely based on a specimen om Came oon, as
i ma ches ha o D. b e ipanicula a s.s and in any case, does
no belong o D. g acillima. O he specimens om sou h-wes
I o y Coas a e wi hou doub D. g acillima.
IVORY COAST
LIBERIA
GUINEASIERRA LEONE
Zwed u
G een ille Ba clay ille
Ha pe
San-Ped o
Ri e cess
Buchanan
Kaka a
Robe spo
Gba nga
14°W
8°N
5°
10°
5°
ig. 3. — Didelo ia g acillima Jongkind, sp. no . ( ), dis ibu ion map (Sho house 2010).
74 ADANSONIA, sé . 3 • 2019 • 41 (8)
Jongkind C. C. H.
Acknowledgemen s
I hank he Wild Champanzee Founda ion (WCF), and
especially hei Coun y Di ec o D Annika Hille s, o
o ganizing he bo anical su ey on which he ype specimen
o he new species was collec ed. I would also hank Thie y
De oin and an anonymous e iewe , who ead a p e ious
e sion o he manusc ip .
REFERENCES
a
ub é ille
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nd
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published on 17 June 2019.