Combretum sericeum G.Don

Jongkind, Carel C. H., 2014, Notes on African Combretum Loefl. species (Combretaceae), Adansonia (3) 36 (2), pp. 315-327 : 324-325

Combretum sericeum G.Don

( Fig. 8 )

Edinburgh Philosophical Journal 11: 347 (1824); Engler & Diels, Monographieen afrikanischer Pflanzen Familien und Gattungen 3: 67 (1899); Andrews, Flowering plants of Anglo-Egyptian Sudan 1: 199 (1950); Keay, Flora of West Tropical Africa 1: 270 (1954); Liben, Flore du Cameroun 25: 16, table 5 (1983). Combretum herbaceum G.Don , Edinburgh Philosophical

Journal 11: 347 (1824). — Types: Sierra Leone, s.l .,

fr., Afzelius s.n. (lecto-, BM, designated here); fl., Af-

zelius s.n. (syn-, BM); fl., Don 78 (syn-, BM); fl., Don

127 (syn-, BM), Afzelius s.n. with fruits (lectotype)

and Afzelius s.n. with flowers (syntype) are found on

the same sheet. Combretum platypetalum Welwitsch ex M.A.Lawson , Flora

of Tropical Africa 2: 433 (1871); Exell, Prodromus einer

Flora um Sudwestafrica, Family 99: 10 (1966); Liben,

Flore du Congo, du Rwanda et du Burundi, Combreta-

ceae: 39 (1968); Wickens, Flora of East Tropical Africa,

Combretaceae : 54 (1973); Exell, Flora Zambesiaca 4:

151 (1978), syn. nov.

Combretum turbinatum F.Hoffmann, Beiträge zur Kenntnis der Flora Central-Ost-Afrika: 28 (1889). — Type: Tanzania, Ugalla R, Boga, fl., IX.1881, Böhm 43a (holo-, B, destroyed; lecto-, Z, designated here).

Combretum parvulum Engler & Diels, Monographieen afrikanischer Pflanzen Familien und Gattungen 3: 67, table 20e (1899). — Type: Central African Republic, Dar-Fertit , W of Kuru, fl.,fr., I.1871, Schweinfurth 3-64 (holo-, B, destroyed; fragm.:BM; lecto-, P[ P00391855 ], designated here; iso-, K).

Combretum argyrochryseum Engler & Gilg , Kunene-Sambesi-Expedition: 320 (1903). — Type: Angola, Bié, Ganguelas, between Kassingo and Kubango, fl., 5.X.1899, Baum 232a (holo-, B, destroyed; fragm.: BM; lecto-, E, designated here).

Combretum lineare Keay, Kew Bulletin: 290 (1953); Keay, Flora of West Tropical Africa 1: 270 (1954), syn. nov.

NOTES

Ŋere is no clear difference between the C. sericeum plants from Central African Republic and the C. platypetalum plants from Tanzania in spite of the geographical gap. It would not be a surprise if that gap evolved relatively recently.

C. lineare is no more than a form of C. sericeum with narrow leaves.All other characters are the same, C. sericeum with wider leaves can also be glabrous.

Figures

FIG. 8. — Distribution map of Combretum sericeum G.Don showing the gap in East Africa between the northern and southern distribu- tion areas. All dots south of this gap represent plants formerly identified as C. platysepalum.