Compilation
Canthium amplum

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Name

Identification
Canthium amplum S.Moore [family RUBIACEAE ] Canthium crassum Hiern [family RUBIACEAE ] (stored under name); Multidentia crassa (S.Moore) Bridson & Verdc. [family RUBIACEAE ]
Related name
  • Multidentia crassa
  • Canthium amplum
  • Canthium crassum
  • Plectronia emarginata

Flora

Entry for Multidentia crassa var. ampla S. Moore Bridson & Verdc. [family RUBIACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 5, Part 2, (1998) Author: D. Bridson
Names
Multidentia crassa var. ampla S. Moore Bridson & Verdc. [family RUBIACEAE], in Kew Bull. 42: 653 (1987); in F.T.E.A., Rubiaceae: 847 (1991). Type: Zambia, Chilanga, Rogers 8446 (BM, holotype; K).
Canthium amplum S. Moore [family RUBIACEAE], in J. Bot. 57: 87 (1919).
Plectronia buarica Mildbr. [family RUBIACEAE], in Notizbl. Bot. Gart. Berlin-Dahlem 9: 203 (1924). Type from Cameroon.
Information
Leaf blades velvety beneath, with short matted hairs.
Habitat
In Brachystegia woodland and Brachystegia–Uapaca woodland, often on hill tops
Altitude range
850–1250 m.
1250
850
Distribution
Malawi C Dedza Distr., Chongoni, fl. 17.xi.1960, Chapman 1048 (K; SRGH).Zambia S Mazabuka, fr. 20.v.1961, Fanshawe 6588 (K).Zambia C Lusaka Distr., Mt. Makulu Research Station, 3.3 km west of Chilanga, fl. 21.xii.1958, Robson & Angus 979 (BM; K; LISC; PRE).Zambia W Chingola, fl. 6.xi.1953, Fanshawe 484 (K).Mozambique N Marrupa, corollas fallen 21.ii.1982, Jansen 8004 (K).Malawi N Chitipa Distr., 16 km south of Chisenga at border with Zambia, fr. 23.iv.1972, Pawek 5162 (K).Zambia N Mbala Distr., Lake Chila, fl. 15.xi.1952, Angus 754 (FHO; K).
Distribution (external)
southern and eastern Tanzania
Notes
Some specimens with a sparser indumentum on the leaf lower surface do occur, and one from Zambia (Silungwe s.n.) has densely tomentose inflorescence axes and calyx tube. Bullock cited Canthium platyphyllum in synonymy for this species, noting \"C. platyphyllum is a further form with a lanate tomentum on the inflorescence and young branchlets; this falls away and the plant develops a rusty-red coloured bark.\" It is in fact a synonym of Vangueriopsis lancifolia. Sterile material of both V. lancifolia and Ancylanthos rubiginosus can resemble M. crassa var. ampla but usually have a stronger indumentum, and rusty-red bark.

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