Psoralea margaretiflora C.H.Stirt. & V.R.Clark
LC Indigenous Endemic

Morphological description

Erect resprouter up to 2 m tall, forming dense clumps. Stems erect, 1-30, branching at or near the base, greyish-brown with numerous white storied lenticels, bare except for bright green, glabrous, glandular, seasonal shoots in the upper axils, radiating either terminally from stems or along older shoots giving a broom-like appearance. Seasonal shoots produced seasonally on old stems, leafy along entire length. Leaves 7-foliolate at base of each seasonal shoot, 5-foliolate thereafter, leaf size variable, larger on water shoots from the rootstock, distributed evenly along the seasonal branches, glabrous, petiolate, patent; leaflets (15)18-25(33) x (0.3)0.5-1(1.5) mm, linear lanceolate, basal pair longest, mid-pair shortest, and terminal leaflets second longest; three uppermost pinnately (rarely digitately) inserted; shiny, glabrous, dark green; apex acuminate, base rounded; petioles 4-5 mm long, shorter than terminal leaflet; rachis 7-15 mm long; stipules 2-3(4) x 2 mm, persistent, shorter than petiole, triangular, glabrous, rigid, semi-patent; rapidly senescent on flowering shoots. Inflorescences axillary, borne in most axils of seasonal shoots, pseudo-spicate, lax, 1-3(5) flowers per axil, pedunculate, pedicellate; peduncles stout and rigid, (10)15-17 mm long, equal in length to the subtending leaf; cupulum trilobed, glabrous, lobes unequally developed, lower lobe longest, acuminate, upper two lobes fused for half their length, yellowish, rapidly senescent, 1.0-1.2 mm long; pedicels 1-1.5 mm long. Flowers 10-12 mm long, white to greenish white. Calyx 5-6 mm long, tube 3-4 x 4 mm, ribbed, glandular, pale green, glabrous on outside; lobes equally developed, same length as the tube, triangular, all 3 mm long, carinal lobe cucullate at apex, finely black-haired on inner face of lobes. Standard petal 9-10 x 7-8 mm, broadly elliptic, greenish white, nectar flash purple, trifid above the strongly developed auricles; claw 2-3 mm long. Wing petals 9-10 x 3-4 mm, white, locked into keel but not fused, petal sculpturing present, upper basal, comprising 7-8 transcostal parallel lamellae; claw 2-3 mm long. Keel 7-9 x 4-5 mm, apex deep purple; purple on inner face of apex; claw 5 mm long. Androecium 9 mm long, tenth stamen free, sheath split adaxially, fenestrate. Pistil 9 mm long, ovary 1.5 mm long, stipitate, glabrous, style straight for 6 mm long, then curved upwards, thickened at point of flexure, height of curvature 2 mm, erect, penicillate. Fruits oblong, 4-5 x 2.5-3.0 mm. Seeds solitary, 2-4 x 2 mm, dark brown to black. From: Bello, A; Stirton, CH; Chimphango, SBM; Muasya, AM. 2017. Taxonomic revision of African Psoralea pinnata species complex (Psoraleeae, Leguminosae). S. African J. Bot. 112: 128-179. [Copyright held by the South African Association of Botanists (2017); http://www.sciencedirect.com/science/journal/02546299] [CC BY]

Erect, up to 2 m high, resprouter. Stems grey, with white lenticels and broadly reticulate vertical fissuring; burst branching occurs in upper axils. Stipules rigid, triangular, semi-spreading. Leaves 5-7-foliolate, glabrous. Leaflets variable, basal pair longest, glabrous, dark green. Flowers greenish white, 1-5 in leaf axils along flowering shoot. Cupulum terminal on pedicel, 3-fid. Calyx pale green, glabrous. Petals: standard broadly elliptic, greenish white with a purple ring surrounding a bright yellow nectar patch; wings greenish white, longer than keel. Flowering time Oct.-Jan. (Apr.). From: Boatwright, JS; et al. 2019. Fabaceae. In: CL Bredenkamp (ed.), A Flora of the Eastern Cape Province. Strelitzia 41(2): 926-1066. South African National Biodiversity Institute, Pretoria. [CC BY]

Diagnostic description

Psoralea margaretiflora is characterised by its tall habit of many stiff bare stems bearing numerous short seasonal shoots, burst-branching from the apex, 5(-7)-pinnate leaves, and its unique greenish white flowers with a small trifid purple nectar guide and translucent veins. It resembles P. glabra in growth habit, but differs in its flat, erect to semi-patent, triangular stipules not prominent or persistent on old shoots (versus subulate, reflexed, and becoming woody on old branches), basal leaflets shortest (versus terminal leaflet shortest), peduncles (10)15-17 mm long (versus 4-11 mm long), white to greenish white flowers (versus pale to dark mauve); calyx yellowish green with lobes equally developed (versus pale green and subequally developed), broadly elliptic standard petals with translucent vein (versus obovate with purple veins), and white wing petals (versus purple). It has been confused in its area of distribution with the single stemmed reseeder P. oligophylla Eckl. & Zeyh. which has a lax, virgate, spreading habit with numerous long glaucous seasonal shoots, 1-3-foliolate, glaucous leaves, numerous white flowers, and standard petals with a purple ring surrounding a bright yellow nectar guide. From: Bello, A; Stirton, CH; Chimphango, SBM; Muasya, AM. 2017. Taxonomic revision of African Psoralea pinnata species complex (Psoraleeae, Leguminosae). S. African J. Bot. 112: 128-179. [Copyright held by the South African Association of Botanists (2017); http://www.sciencedirect.com/science/journal/02546299] [CC BY]

Habitat

It occurs variously in Karoo Escarpment Grassland and 'Afromontane Grassland” verging into Mountain Fynbos, but also occurs in closed Otholobium velutinum shrubland. The plant grows primarily on rich turf soils and colluvium associated with dolerite. It is mainly associated with the following vegetation types: Karoo Escarpment Grassland and Upper Karoo Hard veld (Gh 1 and NKU 2). From: Bello, A; Stirton, CH; Chimphango, SBM; Muasya, AM. 2017. Taxonomic revision of African Psoralea pinnata species complex (Psoraleeae, Leguminosae). S. African J. Bot. 112: 128-179. [Copyright held by the South African Association of Botanists (2017); http://www.sciencedirect.com/science/journal/02546299] [CC BY]

Karoo Escarpment grassland, Afromontane grassland and mountain fynbos; Upper Karoo, Dry Highveld Grassland, Sub-Escarpment Grassland. From: Boatwright, JS; et al. 2019. Fabaceae. In: CL Bredenkamp (ed.), A Flora of the Eastern Cape Province. Strelitzia 41(2): 926-1066. South African National Biodiversity Institute, Pretoria. [CC BY]

Distribution

Psoralea margaretiflora is endemic to the lower and mid-escarpment slopes of the Sneeuberg in the Graaff-Reinet District, being concentrated on the Kamdebooberge, Koudeveldberge and Toorberg in the west, and from the Nardousberg to Aasvoelkrans (behind Pearston) in the east. From: Bello, A; Stirton, CH; Chimphango, SBM; Muasya, AM. 2017. Taxonomic revision of African Psoralea pinnata species complex (Psoraleeae, Leguminosae). S. African J. Bot. 112: 128-179. [Copyright held by the South African Association of Botanists (2017); http://www.sciencedirect.com/science/journal/02546299] [CC BY]

Sneeuberg: Kamdeboo Mts, Koudeveldberge and Toorberg in the west, and from the Nardousberg to Aasvoelkrans (behind Pearston) in the east. From: Boatwright, JS; et al. 2019. Fabaceae. In: CL Bredenkamp (ed.), A Flora of the Eastern Cape Province. Strelitzia 41(2): 926-1066. South African National Biodiversity Institute, Pretoria. [CC BY]

Altitude

1200 to 1800 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

Names and Sources

Accepted name
Psoralea margaretiflora C.H.Stirt. & V.R.Clark

Published in: PhytoKeys 5: 32 (2011)

Type: South Africa, Eastern Cape, Somerset East: Graaff-Reinet Dist., Farm 360, Petersburg, Asante Sana Private Game Reserve, Mar 2008, V.R. Clark & I. Crause 4 (GRA, holo.; BOL, K, NBG, NSW, PRE, S, iso.)

Synonym(s)

Classification

KINGDOM Plantae

SUBKINGDOM Phanerogamae

ORDER Fabales

FAMILY Fabaceae

SUBGENUS Psoralea

9 results for Psoralea margaretiflora C.H.Stirt. & V.R.Clark

Specimen records

Barcode: PRE0575808-0 Collector(s) & number: Nienaber, EP, EN 557 | 1999-8-17

South Africa, Eastern Cape, Graaf-Reinet to Jansenville. Turn left at Pearston road, left at Petersburg road for ± 38km to main gate Sante Sana.

General notes: Occasional. Mngr: R Viljoen.

Data Resource: BODATSA View record

Barcode: NBG1478726-0 Collector(s) & number: Helme, NA, 9071 | 2016-12-20

South Africa, Eastern Cape, Koueveldberge; 46 km WNW of Graaff-Reinet; 4 km W of Onbedacht.

Data Resource: BODATSA View record

Barcode: PRE1009971-0 Collector(s) & number: Clark, V.R., 1 | 2008-12-19

South Africa, Eastern Cape, Farm Oaklands 104, lower slopes of Goewermentsberg, Kamdebooberge, Aberdeen.

Data Resource: BODATSA View record

Barcode: NBG0269084-0 Collector(s) & number: Clark, VR, 4 | 2008-3-31

South Africa, Eastern Cape, Graaff-Reinet region. Farms 360, Sneeuberg, Suurkloof. Near the old town of Petersburg, Asante Sana PG Reserve. 32°16'20"S 25°00'05"E.

General notes: Alt. 1400 m. Mountain slope, SE aspect. Closed Shrubland. Stony/rocky soil. Well-drained. Loam. Roadside/railwayside. Dolerite. Full sun. Common. Shrub, 2.5 m. Flowers white. Abundant on lower slopes of kloof. Shrubland on dolerite and sandstone.

Data Resource: BODATSA View record

Barcode: NBG0269086-0 Collector(s) & number: Clark, VR, 2 | 2011-1-23

South Africa, Eastern Cape, Aberdeen Dist. Farm Plaas 96, "Sleeping Giant", Kamdebooberge. 32°23'35"S 23°50'35"E.

General notes: Alt. 1647 m. Mountain slope, NE aspect. Closed Shrubland. Loamy clay soil. Stony/rocky soil. Well-drained. No biotic effect seen. Dolerite. Full sun. Common. Shrublet 1-2 m, white flowers with purple centre. Dense Otholobium macradenium shrubland where 4x4 track ends.

Data Resource: BODATSA View record

Observation records

Date: 1/5/2018 4:12:00 PM

Eastern Cape

Data Resource: iNaturalist View record

Date: 1/7/2018 8:27:00 AM

Eastern Cape, South Africa

Data Resource: iNaturalist View record

Date: 1/16/2011 12:00:00 AM

Eastern Cape, South Africa

Data Resource: iNaturalist View record

Date: 12/19/2016 12:00:00 AM

Eastern Cape

Data Resource: iNaturalist 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:

2019

SERIES CHAPTER

Fabaceae Boatwright, JS; et al.

In: CL Bredenkamp (ed.), A Flora of the Eastern Cape Province. Strelitzia 41(2)926-1066

South African National Biodiversity Institute, Pretoria

2017

PERIODICAL/JOURNAL

Taxonomic revision of African Psoralea pinnata species complex (Psoraleeae, Leguminosae) Bello, A; Stirton, CH; Chimphango, SBM; Muasya, AM

South African Journal of Botany 112: 128-179

2011

PERIODICAL/JOURNAL

Psoralea margaretiflora (Psoraleeae, Fabaceae): A new species from the Sneeuberg Centre of Floristic Endemism, Eastern Cape, South Africa Barker, NP; Clark, VR; Muasya, AM; Stirton, CH

Phytokeys 5: 31-38

No results found for Psoralea margaretiflora C.H.Stirt. & V.R.Clark

Status

Status and criteria

LC

Assessor(s)

Plantae Coordinator

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

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