Thorncroftia lotteri T.J.Edwards & McMurtry
VU Indigenous Endemic

Morphological description

Semi-succulent erect herb or shrub, 0.3-1.0 m tall, with several main stems. Stems grey below, purple to pale green above, 7-25 mm in diameter, sparingly branched, densely tomentose, trichomes recurved, simple and sessile, capitate. Leaves succulent, lamina broadly trullate to broadly elliptic, 15-40 x 10-30 mm, densely tomentose above, very densely tomentose below, trichomes simple, recurved, glands white to translucent, venation prominent below; apex round to notched; margin crenate in the upper two thirds, rubrotomentose, teeth in 12-14 pairs, veins terminating in regular discoid, glabrous indentations at the apex of each tooth; base round to cordate; petiole often purple, 0-8 mm long. Inflorescence terminal, paniculate, dense; rhachis green to purple, glandular-tomentose; bracts persistent, imbricate, narrowly to broadly elliptic, 6-12 x 3-9 mm, entire, weakly conduplicate, apiculate; flowers axillary, solitary; pedicel purple, 1.5-3.0 mm long. Calyx green, becoming purple, recurved filiform trichomes outside, strigose within, 5-7 mm long; tube 3.5-4.0 mm long; upper lobe ovate, 2.5-3.5 x 2.0-3.0 mm; upper lateral lobes lanceolate-deltoid 2.5 x 1.0 mm; lower lateral lobes lanceolate-deltoid, 1.5-2.0 x 0.75 mm. Corolla tubular, four-lobed, lilac-pink; tube 19-24 x 1.5-2.0 mm, outside filiform trichomes recurved, glands clear, sessile, inside distal third glabrous, proximal inner tube villous; posticous lobe erect, obovate, 6-7 x 7-8 mm, purple streaked; lateral lobes deflexed, linear-lanceolate, acuminate, 6-7 x 2 mm, purple spotted; anticous lobe cymbiform, 6-9 mm long, porrect, becoming reflexed, pale lilac to white. Stamens 4, filaments 4-6 mm long, adnate to the corolla throat. Ovary four-lobed, glabrous; style white, filiform, exserted by 4-8 mm; stigma purple, shortly bifid. Nutlets glossy, pale to dark brown, ovoid, 2.0-2.5 x 1.5-2.0 mm. From: Edwards, TJ. 2006. Notes on the Lamiaceae: A new Tetradenia and a new Thorncroftia from South Africa. S. African J. Bot. 72: 202-204. [Copyright held by the South African Association of Botanists (2006); http://www.sciencedirect.com/science/journal/02546299] [CC BY]

Diagnostic description

It differs from T. succulenta in its simple filiform trichomes (as opposed to the dendroid trichomes of T. succulenta), its laxer inflorescences and its pink flowers. It differs from T. media in its much smaller, crenate leaves (those of the former are 35-65 x 25-35 mm and entire), short petioles, congested panicles and lilac-pink corollas All have scentless, narrow corolla tubes about 20 mm in length with pilose hairs covering the inner surfaces around the lower style and ovary. The lower corolla lips are fleetingly porrect but soon become reflex, suggesting a hovering vector. Their anthers are exserted to about 5 mm. The flowers of T. succulenta are pale bluish mauve with darker spots and nectar guides on the petal lobes, T. media has lilac corollas with purple markings and the new species has lilac-pink flowers with purple markings. From: Edwards, TJ. 2006. Notes on the Lamiaceae: A new Tetradenia and a new Thorncroftia from South Africa. S. African J. Bot. 72: 202-204. [Copyright held by the South African Association of Botanists (2006); http://www.sciencedirect.com/science/journal/02546299] [CC BY]

Distribution

T. lotterii is known only from the Ugutugulu Gorge in Mpumalanga. From: Edwards, TJ. 2006. Notes on the Lamiaceae: A new Tetradenia and a new Thorncroftia from South Africa. S. African J. Bot. 72: 202-204. [Copyright held by the South African Association of Botanists (2006); http://www.sciencedirect.com/science/journal/02546299] [CC BY]

Occurrence records map

This map contains point-based occurrences at different locations

iNaturalist: BODATSA: Data partners records:

Residence status

Occurrence in the Flora of Southern Africa (FSA) countries and South African provinces. Residence status indicates if a taxon is indigenous, endemic, naturalised or invasive in a specific region. This data is based on specimen records and literature

FSA

SA

BOT

NAM

ESW

LES

WC

EC

NC

FS

GA

KZN

LP

MP

NW

Absent

Indigenous

Endemic

Naturalised

Invasive

×

Names and Sources

Accepted name
Thorncroftia lotteri T.J.Edwards & McMurtry

Published in: S. African J. Bot. 72(2): 202 (2006)

Nomenclature note: as 'lotterii'

Synonym(s)

Classification

KINGDOM Plantae

SUBKINGDOM Phanerogamae

SUBFAMILY Nepetoideae

TRIBE Ocimeae

SPECIES lotteri

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Occurrence records map

This map contains point-based occurrences at different locations

iNaturalist: BODATSA: Data partners records:

2006

PERIODICAL/JOURNAL

Notes on the Lamiaceae: A new Tetradenia and a new Thorncroftia from South Africa Edwards, TJ

South African Journal of Botany 72: 202-204

No results found for Thorncroftia lotteri T.J.Edwards & McMurtry

Status

Status and criteria

VU

Assessor(s)

Plantae Coordinator

Bibliography

JOURNAL ARTICLE
Clausnitzer, V. and Dijkstra, K.–D.B. in prep. The dragonflies of Eastern Africa. An identification key

BOOK
Pinhey, E. 1961. A survey of the dragonflies of Eastern Africa. British Museum (Natural History)

JOURNAL ARTICLE
Pinhey, E. 1984. A check-list of the Odonata of Zimbabwe and Zambia. Smithersia. 3:1-64

JOURNAL ARTICLE
Dijkstra, K.-D.B. and Clausnitzer, V. 2005. An annotated checklist of the dragonflies (Odonata) of eastern Africa, with critical lists for Ethiopia, Kenya, Malawi, Tanzania and Uganda, new records, taxonomic notes and descriptions of new species. in prep.

Part(s) of plant used Use(s) Reference

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