Pavetta trichardtensis Bremekamp (1929: 202)

Hahn, Norbert, 2022, Pavetta trichardtensis (Rubiaceae) and its varieties, Phytotaxa 533 (4), pp. 216-222 : 217

publication ID

https://doi.org/ 10.11646/phytotaxa.533.4.4

DOI

https://doi.org/10.5281/zenodo.6311173

persistent identifier

https://treatment.plazi.org/id/03B78E61-2242-2433-FF45-FBDFB387F8F5

treatment provided by

Plazi

scientific name

Pavetta trichardtensis Bremekamp (1929: 202)
status

 

Pavetta trichardtensis Bremekamp (1929: 202) View in CoL .

Type:— SOUTH AFRICA. Limpopo: Louis Trichardt, February 1919, H. G. Breijer TRV 19528 (lectotype PRE! [barcode PRE0149529 About PRE -0] designated by Bremekamp (1934: 163)) .

Multi-stemmed shrub or small tree, up to 2.5 m tall. Bark smooth, grey. Leaves opposite; petioles (0.2–)0.4–1(–1.5) cm long; blades elliptic or oblong, (1.8–)3.9–7.6(–8.9) × (0.9)1.8–3.4(5.3) cm, apex obtuse to acute, occasionally shortly apiculate, base acute to cuneate; secondary veins 4–8 on each side of midrib; bacterial nodules randomly scattered on the leaf lamina; domatia hairy, situated in the axils of secondary veins. Inflorescence of terminal cymes born on slender lateral branches; pedicel up to 6 mm long. Flowers 4-merous. Hypanthium 1.2–2.4 mm long. Calyx lobes ensiform, (2.2) 2.9–5.4 (8.4) mm long. Corolla white; tube (6.3–)9.4–13.5(–15.4) mm long; lobes (4.0–)5.2–7.4(–8.7) mm long, apex obtuse to acute. Stamens exerted; anthers 3.5–7.0 mm long. Style up to 35 mm long. Berry spherical, up to 9 mm in diam., fleshy, black; crowned by the persistent calyx lobes.

Phenology:—Flowering from November to January. Fruit ripen from February to May.

Habitat:—This variety has been observed growing in mountain vegetation, on forest margins, woodland, rocky outcrops and grassland. Pavetta trichardtensis grows in sandy or loamy soil, at elevations of 780–1700 m.

Etymology:—Named after the town of Louis Trichardt situated on the southern foot of the Soutpansberg, South Africa.

Key to varieties

1. Leaf blades pubescent, matte and light green above, with flat bacterial nodules flat; calyx pubescent ................. var. trichardtensis View in CoL

- Leaf blades glabrous, shiny and dark green above, with sunken bacterial nodules; calyx glabrous.............................. var. jabulanii

H

University of Helsinki

G

Conservatoire et Jardin botaniques de la Ville de Genève

TRV

Transvaal Museum

PRE

South African National Biodiversity Institute (SANBI)

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Gentianales

Family

Rubiaceae

Genus

Pavetta

Loc

Pavetta trichardtensis Bremekamp (1929: 202)

Hahn, Norbert 2022
2022
Loc

Pavetta trichardtensis

Bremekamp, C. E. B. 1929: )
1929
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