Compilation
Ardisiandra orientalis

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Name

Identification
Ardisiandra orientalis Hutch. ex Weim. [family PRIMULACEAE ] Verified by Not on sheet, Ardisiandra wettsteinii R.Wagner [family PRIMULACEAE ] (stored under name); Verified by Inga Hedberg, 1963
Related name
  • Ardisiandra sibthorpioides
  • Ardisiandra orientalis
  • Ardisiandra wettsteinii

Flora

Entry for Ardisiandra wettsteinii R. Wagner [family PRIMULACEAE]
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, (1958) Author: P. TAYLOR
Names
Ardisiandra wettsteinii R. Wagner [family PRIMULACEAE], in Anzeiger Akad. Wiss. Wien 69 : 185 (1932); P. Tayl. in K.B. 1958: 147 (1958). Type: Tanganyika, Kilimanjaro, Greenway 3862 (K, holoneo.!, EA, isoneo.!)
Ardisiandra orientalis Weim. [family PRIMULACEAE], in Svensk Bot. Tidskr. 30 : 41 (1936); F.P.N.A. 2 : 38 (1947). Types : Kenya, Mt. Kenya, Fries 714 & Aberdare Mts., Fries 2422; Tanganyika, Kilimanjaro, Haarer 1002 & 1112 (all K, syn. !)
Ardisiandra orientalis Weim. var. hirsuta [family PRIMULACEAE], in Svensk Bot. Tidskr. 30 : 44 (1936); F.P.N.A. 2 : 38 (1937). Types : Belgian Congo, Mt. Nyiragongo, Mildbraed 1389 & Mt. Muhavura, Mildbraed 1840 (both B, syn. †)
Ardisiandra stolzii Weim. [family PRIMULACEAE], in Svensk Bot. Tidskr. 30 : 44 (1936). Type : Tanganyika, Rungwe District, Kyimbila, Stolz 167 (BM, UPS, iso. !)
Information
Stems slender, reddish, prostrate, up to 45 cm. long, rooting at the nodes; internodes 5–30 mm. long. Leaves numerous; petiole slender, pubescent, up to 4 cm. long; lamina orbicular, up to 40 × 40 mm., sparsely pubescent on both surfaces, obtuse, basally cordate, 7–9-crenate, the crenations with a few short broad acute teeth. Racemes 1–6-flowered; axes up to 10 mm.; peduncles up to 10 mm.; pedicels filiform, up to 20 mm. long; bracts linear-lanceolate, 3–4 mm. long. Calyx-segments narrowly ovate, pubescent, basally rounded, acute, ciliate, slightly accrescent, at anthesis about half as long as the corolla. Corolla white or pale mauve, up to 8 mm. long; lobes 2–3 mm. long, glabrous; apex rounded or emarginate. Filaments about 0.6 mm. long; anthers about 1.3 mm. long. Capsule globose, about 4–5 mm. in diameter, indehiscent, with a thin transparent pericarp through which can be seen the swollen whitish placenta and black seeds. Seeds about 1.2 mm. long. Fig. 1/1–11, p. 3.
Range
DISTR. U2; K3, 4, 7; T2, 3, 7, 8 ; mountains of eastern Africa from Uganda and the adjacent parts of the Belgian Congo to Southern Rhodesia (Inyanga).
Altitude range
1800–3600 m.
Distribution
KENYA Mt. Kenya: West Kenya Forest Station, 3 Jan. 1922, Fries 714 ! ;KENYA Teita District Teita Hills, Yale Peak, 13 Sept. 1953, Drummond & Hemsley 4284 !TANGANYIKA Kilimanjaro, Bismarck Hill, Feb. 1934, Greenway 3862 ! ;TANGANYIKA Lushoto District Usambara Mts., Bumbuli Mission, 10 May, 1953, Drummond & Hemsley 2486 !TANGANYIKA Rungwe District Mt. Rungwe, May 1953, Eggeling 6527 !UGANDA Rumenzori, Nyinabitaba, Aug. 1933, Eggeling 1390 ! ;UGANDA Kigezi District Muhavura-Mgahinga saddle, Sept. 1946, Purseglove 2147 !
Notes
This species is very similar indeed to A. sibthorpioïdes and in the absence of fruits certain identification is almost impossible. The primary lobes of the leaf-margin in the present species seem to be more (7–9) than in A. sibthorpioïdes (5–7), but it is often difficult to distinguish between the primary lobes and the secondary toothing and determine the number of the former.

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