Sabicea arachnoidea Hutch. & Dalziel , Fl. W. Trop. Afr. 2: 106. 1931
Four new species of Sabicea (Rubiaceae) from tropical Africa, with additional notes on the genus
Zemagho, Lise
Lachenaud, Olivier
Sonké, Bonaventure
Candollea
2018
2018-11-23
73
2
277
293
4TVF4
Stapf
Stapf
[824,1050,470,495]
Magnoliopsida
Rubiaceae
Sabicea
Plantae
Gentianales
14
291
Tracheophyta
species
discolor
Lectotypus(designated here): LIBERIA. Sinoe: Sinoe Basin, 1904, Whytes.n.( K[ K000043317]!). Syntypi: GHANA: Akwapim, III.1900, Murphy679( K[ K000043305]!). LIBERIA. Montserrado: Monrovia, 1904, Whytes.n.( K[ K000043318]!).
= Sabicea arachnoidea Hutch. & Dalziel, Fl. W. Trop. Afr. 2: 106. 1931. Lectotypus(designated here): SIERRA LEONE. Northern Prov.: Yonibana, 11.XI.1914, N.W. Thomas5275 ( K[ K000043255]!). Syntypi: SIERRA LEONE. Northern Prov.: Yonibana, 11.XI.1914, N.W. Thomas5062 ( K[ K000043256]!); Roruks, 24.XI.1914, N.W. Thomas5703 ( K[ K000043257]!), syn. nov.
Notes. – Sabicea arachnoideawas described based on three very poor collections from Sierra Leone, and has never been recollected since. It is supposedly characterised by dense globose inflorescences, linear or filiform calyx lobes, and discolorous leaves with arachnoid indumentum beneath (HUTCHINSON & DALZIEL, 1931; HEPPER, 1963). A reexamination of the syntypesshows that the so-called inflorescences are actually leaf galls, which bear structures resembling calyx lobes at first sight – similar galls have been reported in S. sciaphilanthasubsp. hirsutaZemagho, O. Lachenaud & Sonké(ZEMAGHO et al., 2017). In vegetative characters the syntypesof S. arachnoideaare inseparable from S. discolor, which has also been collected at Yonibana ( N.W. Thomas 5038, K) and it is therefore obvious that the two species are identical. Among the three syntypesof S. arachnoidea, the most complete collection [ K000043317] is designated here as lectotype. Theoriginal description of S. discolor(STAPF, 1905) is also based on three syntypes, as the author states: “near Monrovia and in the Sinoe Basin, Whyte. Also in the Gold Coastnear Akwapim, at 1400 feet, Murphy(herb. Johnson, 679)”. Oneof the Whytecollections, which is slightly better than the others, is selected here as lectotype.
3470697313
K
Whyte
Liberia
Sinoe Basin
Sinoe Basin
14
291
K000043317
1
Sinoe
lectotype
3470697335
1900-03
K
Murphy
Ghana
Akwapim
14
291
K000043305
1
syntype
3470697319
K
Whyte
Liberia
Monrovia
14
291
K000043318
1
Montserrado
3470697323
1914-11-11
K
N. W. Thomas
Sierra Leone
Northern Prov.
Yonibana
14
291
K000043255
1
3470697332
1914-11-11
1914-11-24
1914-11-11
K
N. W. Thomas
Sierra Leone
Yonibana
Northern Prov.
Northern Prov.
14
291
K000043256, K000043257
1
3470697306
1914-11-11
1914-11-24
1914-11-11
K
N. W. Thomas
Sierra Leone
Yonibana
Northern Prov.
Northern Prov.
14
291
K000043256, K000043257
1