PLANTAE / PHANEROGAMAE / ANTHOPHYTA / ALISMATALES / ARACEAE / LEMNOIDEAE / WOLFFIELLA / WELWITSCHII

Wolffiella welwitschii (Hegelm.) Monod
NE Indigenous
Morphological description

Perennial and perhaps also annual. Fronds submerged, with the basal part near the surface of the water and the tip bent downwards, cohering 2 or 3 together, tongue-shaped and bent backwards on itself (saddle-like), 3-9 mm long, 0.8-5 mm wide, without marginal teeth. Inflorescence 1 on each frond. Flowers and fruits common, 2 per frond (flowering plants narrower than vegetative ones). Seeds ovoid, 0.41-0.45 mm long, ± 0.29 mm in diameter. Not very gregarious, usually found mixed with other floating plants or growing among reeds. From: Cook, CDK. 2004. Aquatic and wetland plants of southern Africa. Backhuys Publishers, Leiden. [All rights reserved]

Diagnostic description

Fronds cohering 2 or 3 together, tongue-shaped and eachbent backwards on itself (saddle-like), 3-9 mm long, 0.8-5 mm wide, without marginal teeth. From: Cook, CDK. 2004. Aquatic and wetland plants of southern Africa. Backhuys Publishers, Leiden. [All rights reserved]

Distribution

Tropical America & Africa extending south to RSA: BOT, KN. From: Cook, CDK. 2004. Aquatic and wetland plants of southern Africa. Backhuys Publishers, Leiden. [All rights reserved]

Altitude

1 to 900 m

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

https://seis-sanbi.azureedge.net/anura/default/asset.do?preview=206529

Names and Sources

Accepted name
Wolffiella welwitschii (Hegelm.) Monod
Synonym(s)

Wolffiopsis welwitschii (Hegelm.) Hartog & Plas


Classification

KINGDOM Plantae

SUBKINGDOM Phanerogamae

PHYLUM Anthophyta

ORDER Alismatales

FAMILY Araceae

SUBFAMILY Lemnoideae

GENUS Wolffiella

SPECIES welwitschii

8 results for Wolffiella welwitschii (Hegelm.) Monod

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Specimen records

Barcode: PRE0513266-0 Collector(s) & number: Ward, CJ, 8543 | 1974-1-11

South Africa, KwaZulu-Natal, MBAZWANE PAN; MKUZE/MBAZWANE SWAMPS

Data Resource: BODATSA View record

Barcode: PRE0062298-0 Collector(s) & number: Smith, PA, 585 | 1973-5-14

Botswana, NORTHERN DIST.; MOANACHIRA RIVER; .5 MI. FURTHER UPSTREAM ON EDGE OF PERMANENT SWAMP

Data Resource: BODATSA View record

Barcode: NH0064406-0 Collector(s) & number: Ward, CJ, 8535 | 1974-1-10

South Africa, KwaZulu-Natal, Shezi Stream : near Sodwana Bay.

General notes: Floating in stream, drainage impeded but water moving, amongst hygrophilous and drowned vegetation. Altitude - c. 4,5m.

Data Resource: BODATSA View record

Barcode: PRE0062297-0 Collector(s) & number: Ward, CJ, 7297 | 1971-10-19

South Africa, KwaZulu-Natal, MKUZE SWAMPS; DEMEZANA PAN; CHANNEL SW. OF DEMEZANE PAN

Data Resource: BODATSA View record

Barcode: NH0080779-0 Collector(s) & number: Ward, MC, 736 | 1984-6-26

South Africa, KwaZulu-Natal, Amatikulu Nature Reserve.

General notes: Forb floating in semi-permanent pan in coastal area. Abundant.

Data Resource: BODATSA View record

Barcode: PRE0513267-0 Collector(s) & number: Ward, CJ, 8535 | 1974-1-10

South Africa, KwaZulu-Natal, SORDWANA BAY; SHEZA STREAM

General notes: Drainage impeded but water moving, amongst hydrophilous and drowned vegetation floating.

Data Resource: BODATSA View record

Barcode: NH0064482-0 Collector(s) & number: Ward, CJ, 7496 | 1971-12-16

South Africa, KwaZulu-Natal, Mkuze Swamps : Ndlankaya Pan.

General notes: Floating in shallow water in perepheral part of pan, water level recently raised by summer inflow. Locally abundant. Altitude - c. 7m.

Data Resource: BODATSA View record

Barcode: PRE0474666-0 Collector(s) & number: Ward, CJ, 7496 | 1971-12-16

South Africa, KwaZulu-Natal, MKUZE SWAMPS; NDLANKAYA PAN

Data Resource: BODATSA View record

Plant occurence records per dataset

Plant occurence records per year

Occurrence records map

This map contains point-based occurrences at different locations

iNaturalist: BODATSA: Data partners records:

2004

BOOK

Aquatic and wetland plants of southern Africa Cook, CDK

Backhuys Publishers, Leiden

1995

BOOK

Énumération des Plantes à Fleurs d'Afrique Tropicale, Vol. 3 Lebrun, J-P; Stork, AL

Jardin Botanique, Geneva

1980

PERIODICAL/JOURNAL

Landolt, E

Veroffentlichungen des Geobotanischen Institutes Rübel in Zürich 70:

No results found for Wolffiella welwitschii (Hegelm.) Monod

Status

Status and criteria

NE

Assessor(s)

Plantae Coordinator

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

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