Compilation
Byrsocarpus boivinianus

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Name

Identification
Rourea coccinea (Thonn.) Benth. [family CONNARACEAE ] (stored under name); Verified by Jonghind, C., Byrsocarpus boivinianus Baill. [family CONNARACEAE ]
Related name
  • Rourea coccinea
  • Byrsocarpus boivinianus

Flora

Entry for BYRSOCARPUS boivinianus (Baill.) Schellenb. [family CONNARACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical East Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical East Africa, page 1, (1956) Author: J. H. Hemsley
Names
BYRSOCARPUS boivinianus (Baill.) Schellenb. [family CONNARACEAE], Beitr. Anat. Syst. Conn. 40 (1910); E.P. IV. 127: 155 (1938); T.T.C.L. 167 (1949). Type: Kenya, Mombasa, Boivin (P, holo.)
Rourea boiviniana Baill. [family CONNARACEAE], in Adansonia 7: 231 (1867)
Byrsocarpus ovatifolius Baker [family CONNARACEAE], in F.T.A. 1: 452 (1868). Type: southern Tanganyika border, Rovuma River, Meller (K, holo.!)
Byrsocarpus maximus Baker [family CONNARACEAE], in F.T.A. 1: 453 (1868); Schellenb. in V.E. 3 (1): 324, fig. 211 (1915). Type: southern Tanganyika border, Rovuma River, Kirk (K, holo.!)
Rourea maxima (Baker) Gilg [family CONNARACEAE], in P.O.A. C: 192 (1895)
Rourea ovatifolia (Baker) Gilg [family CONNARACEAE], in P.O.A. C: 192 (1895)
Rourea usaramensis Gilg [family CONNARACEAE], in P.O.A. C: 192 (1895). Types: Tanganyika, prob. Bagamoyo or Uzaramo Districts Dunda, Stuhlmann 6420; Dilangilo, Stuhlmann 6641; Kikuli, Stuhlmann 6780; and Maguli, Stuhlmann 7091 (all B, syn. †)
Rourea goetzei Gilg [family CONNARACEAE], in E.J. 28: 394 (1900). Type: Tanganyika, Kilosa District, E. slopes of Vidunda Mts., bank of Ruaha River, Goetze 415 (B, holo. †, K, iso.!, written up as R. goetzeana Gilg)
Byrsocarpus usaramensis (Gilg) Schellenb. [family CONNARACEAE], Beitr. Anat. Syst. Conn. 43 (1910)
Byrsocarpus goetzei (Gilg) Greenway [family CONNARACEAE], in T.T.C.L., part 1, 41 (1940)
Information
Shrub, scandent or otherwise, or small tree to 4 m. high. Young stems reddish brown with numerous small lenticels, older stems grey. Leaf-rhachis 6–17 cm. long, glabrous. Leaflets 2–4 pairs, elliptic to ovate, 2.5–6 cm. long, 1.5–4 cm. wide, apex acuminate or sub-acuminate, base rounded; lower lateral leaflets ± ovate, sub-oblique, with rounded to ± cordate base; chartaceous to sub-coriaceous, glabrous and ± glaucous when dry. Inflorescence rhachis to 7 cm. long, glabrous. Sepals ovate to broadly ovate, to 3.5 mm. long, 3 mm. wide, glabrescent. Petals ligulate or narrowly to broadly elliptic, to 12 mm. long, 3 mm. wide. Stamens 10; long-stamened flowers, 5 episepalous stamens, 7.5–11 mm. long, 5 epipetalous 5.5–9 mm. long; short-stamened flowers, 5 episepalous stamens to 3.5 mm. long, 5 epipetalous to 2.5 mm. long; filament-tube 1–2.5 mm. long. Ovary ovoid, to 1.5 mm. long, hirsute; styles of long-stamened flowers to 3 mm. long, styles of short-stamened flowers to 8.5 mm. long. Follicle yellow to scarlet when mature, to 2 cm. long, 1 cm. diam. Seed to 1.6 cm. long, 7 mm. diam., almost enclosed within bright red pseudo-aril; exposed tip of testa black; radicle ventral.
Range
DISTR. K7; T3, 6, 8
Altitude range
0–750 m.
Distribution
KENYA Kilifi District Arabuko-Sokoke Forest, June 1937 (fr.), Dale 3775!TANGANYIKA Handeni District 30 km. S. of Handeni, 10 Mar. 1953 (fl.), Drummond & Hemsley 1467!TANGANYIKA Kilosa, Jan. 1926 (fr.), B. D. Burtt 74!;TANGANYIKA Rufiji District Mafia Island, Oct. 1937 (fl.), Greenway 5383!
Distribution (external)
Portuguese East Africa
Notes
VARIATION. Specimens from areas with markedly seasonal water supply have a thick rough bark with very dense pale raised lenticels giving a coral like appearance to the surface. The leaflets of plants from such areas are broader, more coriaceous and very shortly acuminate. This species in common with others of the genus sometimes flowers on young vigorous shoots arising from burnt-back stools and in this case the inflorescences are long and lax with very few, large flowers, the sepals and petals tending to be longer and broader than the normal dimensions for the species.

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