Clerodendrum johnstonii Oliv. var. johnstonii

Meerts, Pierre, 2023, The genus Clerodendrum (Lamiaceae) in the flora of Central Africa (D. R. Congo, Rwanda, Burundi), Phytotaxa 594 (1), pp. 1-42 : 20

publication ID

https://doi.org/ 10.11646/phytotaxa.594.1.1

DOI

https://doi.org/10.5281/zenodo.7868784

persistent identifier

https://treatment.plazi.org/id/49146779-FF8D-690C-FF06-FC71FED0F7CF

treatment provided by

Plazi

scientific name

Clerodendrum johnstonii Oliv. var. johnstonii
status

 

14a. Clerodendrum johnstonii Oliv. var. johnstonii View in CoL View at ENA

= Clerodendrum johnstonii subsp. johnstonii ( Verdcourt 1992: 118) View in CoL ; Bloesch et al. (2009: 626).

=? Clerodendrum johnstonii var. rubrum Thomas (1936: 75) View in CoL . Type:— TANZANIA. Morogoro, 12 July 1933, Schlieben 4130 (holotype: B, not seen; iso-: LISC011436 ), nom inval.

Subshrub, sarmentose shrub, 1.5–6 m, or, more rarely, liana up to 12 m high and 10 cm diam. Stem quadrangular, stiff and robust up to inflorescence (5 mm thick), pale fulvous to rusty tomentose, persistent petiole bases 2–4(–20) mm; old shoots brownish with numerous pale lenticels. Leaf: petiole (0.5–)1.0–9.0 cm, often unequal in length at a node; lamina broadly ovate to ovate-elliptic, (5–)6–19 ×(4–) 5–15 cm, base rounded to cordate, more rarely obtuse, apex acute to obtuse, contracted into a short point, or acuminate, 4–6(–7) veins on either side, upper surface dark green, shortly pubescent (reddish hairs ca. 0.5 mm), roughish, lower surface markedly discolorous, uniformly beige- or greyish-tomentose, Inflorescence at shoot apex, corymbose to hemispherical, 4–14 × 4–19 cm, comprising compact axillary cymes in the 3–4(–5) uppermost nodes, rarely more widely spaced in the axils of vegetative nodes, lowermost branches 3–8 cm, subtended by leaves; branches fulvous, rusty or beige tomentose, bracts linear to very narrowly obovate-elliptic, 2–10 mm long. Flower: pedicel 0.5–7 mm; calyx campanulate (2.5–)3–6(–7) mm long, lobes 1–2 mm long, triangular, shortly greyish, rusty, to beige-tomentose; corolla white, occasionally rose-tinged, scented, tube (5–) 7–11 mm, glabrous, or with sessile glands, lobes 2–3 mm long, tomentose and with golden glands on outer surface; stamens exserted 3–8 mm, anther ca. 1 mm long. Fruit 8–11 × 5–9 mm, subtended by the accrescent cupuliform calyx up to 9 mm wide.

Distribution in Central Africa:—D.R. Congo, Rwanda, Burundi.

Distribution elsewhere:— Ethiopia, Somalia, Sudan, Kenya, Tanzania, Uganda, Malawi, Zambia.

Habitat:—Montane rainforest, sclerophyllous montane forest, montane fallow field (Lobeliion giberroae), Hyparrhenia savannah, bamboo forest, secondary forest with Neoboutonia macrocalyx ; 1400– 2710 m.

Selection of representative specimens:—D.R. CONGO. Lac Albert: Territ. Mahagi, Djalasindi, 23 July 1945, Germain 4062 (BR!); Nioka, 8 August 1952, Liben 355 (BR!); Mahagi, August 1931, Lebrun 3746 (BR!). Lacs Edouard et Kivu: Ruwenzori, Butagu, 13 April 1914, Bequaert 3620 (BR!, US); Parc national Albert [Virunga], Mt. Runyoni, 29 January 1955, de Witte 11593 (BR!), Parc National Albert [Virunga], Mikeno, 20 February 1945, Germain 3540 (BR!).— RWANDA. Lacs Edouard et Kivu: Rwaza (SE de Ruhengeri), 23 February 1972, Auquier 2682 (BR!); Kigeme (Gikongoro), 8 January 1980, Bridson 144 (BR!, WAG); Mulungu, km 25, road Bukavu-Goma, 1959, Pierlot 2799 (BR!).— BURUNDI. Lacs Edouard et Kivu: Territ. Mwisare. Gakara, mine de la Karonge, 3 March 1967, Lewalle 1637 (BR!, MO). Rwanda-Burundi: Ntega (Kirundo), 10 June 1986, Bouharmont 18106 (BR!); Mugongomanga, 19 November 1972, Reekmans 2099 (BR!); Entre Bukeye et Muremera, 25 May 1926, Robyns 2327 (BR!, WAG).

WAG

Wageningen University

MO

Missouri Botanical Garden

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Lamiales

Family

Lamiaceae

Genus

Clerodendrum

Loc

Clerodendrum johnstonii Oliv. var. johnstonii

Meerts, Pierre 2023
2023
Loc

Clerodendrum johnstonii subsp. johnstonii ( Verdcourt 1992: 118 )

Bloesch, U. & Troupin, G. & Derungs, N. 2009: 626
Verdcourt, B. 1992: 118
1992
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