PLANTAE / PHANEROGAMAE / ANTHOPHYTA / PROTEALES / PROTEACEAE / PROTEOIDEAE / LEUCADENDREAE / LEUCADENDRON / SERICEUM

Leucadendron sericeum (Thunb.) R.Br.
EN Indigenous Endemic
Morphological description

Shrubs up to 1 m tall, diffuse, branching from near the ground. Branches very slender, numerous, less so in the female plant, erect, rather thinly short-pubescent becoming glabrous when old. Leaves of male plants up to 9 mm long, 2 mm broad, usually much less, of female plants somewhat larger up to 1.5 cm long, 2.5 mm broad, erect, narrowly oblanceolate, apex acute with a small blunt red callus, narrowing towards the base, thinly adpressed-pubes-cent but not silvery. No conspicuous involucre. Male inflorescence solitary at the ends of small branchlets and also in groups with several axiliary heads crowded together, up to 8 mm long, 1.1 cm diam., giving off a strong sweet smell. Basal bracts 3.5 mm long, 2 mm broad, about 76 cm number, the outermost sub-cordate, becoming broadly lanceolate, acute, reddened towards the apex, sparsely short-pubescent, short-ciliate, with adjacent bracts in 2 spiral rows. Floral bract 3-2.2 mm long, 0.7-0.3 mm broad, linear, apex reddened and very short-ciliate, pubescent in the upper two thirds. Floral bud 7 mm long, densely short-crisped-pubescent, base surrounded by a tuft of hairs. Perianth tube 5 mm long, crisped-pubescent, becoming deflexed, connate with the style. Claw 1.2 mm long, recurved 180°, pubescent. Limb 1.3 mm long, acute, pubescent. Anther 0.7 mm long, slightly curling upwards. Pollen triangular in polar view with sides 35 µ long, polar depth 20µ. Stigma abortive 0.7 mm long, clavate, minutely cleft, acting as a pollen presenter. Style 1.2 mm long, connate with the perianth tube for a further 5 mm below. No hypogynous scales. No nectar seen. Receptacle 4 mm long, 1 mm diam., clavate, acute. Female inflorescence up to 1.9 cm long, 1.3 cm diam., globose with the yellow florets clustered at the apex, solitary at the ends of erect branchlets or with several axiliary heads clustered around the base of the terminal head, not hidden by the leaves, giving off a strong sweet smell. Basal bracts 8.5 mm long, 4 mm broad, about 165 cm number, subcaudate at first becoming lanceolate, acute, reddened towards the apex, the apical callus oblong and raised on the adaxial surface, long-ciliate and densely villous in the upper two thirds, closely imbricating the base and sides of the head. Floral bract 6 mm long, 3.5 mm broad, ovate, acute, very densely silky villous. Floral bud 1 cm long, very densely silky villous, surrounded by long hairs at the base. Perianth segments free, 8 mm long, villous, the adaxial segment clasps the style. Claw 3.5 mm long, recurved 90° and over, villous. Limb 2 mm long, acute, villous. Staminode 0.5 mm long, acute. Ovary 1.5 mm long, 1.1 mm broad, oblong, lobed above, minutely sparsely pubescent, with a ridge on the adaxial surface which is the continuation of the base of the style. Style 9 mm long, filiform, thickened near the apex. Stigma 1 mm broad, often cleft, truncate, terminal-oblique. Hypogynous scales absent. Nectar absent. Receptacle 6 mm diam., globose. Mature female head up to 1.7 cm long, 1.5 cm diam., ovoid, with bracts acute and densely pubescent. Fruit a nut, 6.5 mm long, 4.5 mm broad, 3 mm thick, perimeter ridged, abaxial surface ventricose, with a double fold down the middle of the adaxial surface, smooth, light grey in colour. From: Williams, IJM. 1972. A revision of the genus Leucadendron (Proteaceae). Contr. Bolus Herb. 3: 1-425. [All rights reserved]

Slender, dioecious shrublet to 1 m. Leaves narrowly oblanceolate, adpressed-hairy, to 9 mm long (male), to 15 mm (female), involucral leaves similar. Male flower heads in small clusters, ± 11 mm diam., females ± 13 mm diam., sometimes in clusters, sweetly scented. From: Manning, JC; Goldblatt, P. 2012. Proteaceae. In: J Manning & P Goldblatt (eds), Plants of the Greater Cape Floristic Region 1: The Core Cape flora. Strelitzia 29: 657-681. South African National Biodiversity Institute, Pretoria. [CC BY]

Diagnostic description

L. sericeum belongs to a small but very distinct section within the genus which is characterised by having part of the male style connate with the perianth tube and no hypgynous scales. It also has a fruit which is smooth, light grey in colour and ventricose with a double fold in the exocarp down the middle of the adaxial surface. It is distinguished from L. nitidum by being much smaller in leaf size, those of the male being amongst the smallest in the genus. From: Williams, IJM. 1972. A revision of the genus Leucadendron (Proteaceae). Contr. Bolus Herb. 3: 1-425. [All rights reserved]

Habitat

Level ground in sandy soil (pH 5.7) derived from Table Mountain Sandstone. From: Williams, IJM. 1972. A revision of the genus Leucadendron (Proteaceae). Contr. Bolus Herb. 3: 1-425. [All rights reserved]

Sandstone plateaus. From: Manning, JC; Goldblatt, P. 2012. Proteaceae. In: J Manning & P Goldblatt (eds), Plants of the Greater Cape Floristic Region 1: The Core Cape flora. Strelitzia 29: 657-681. South African National Biodiversity Institute, Pretoria. [CC BY]

Distribution

Confined, as far as is known, to one small population in the Cold Bokkeveld at Wabooms River. From: Williams, IJM. 1972. A revision of the genus Leucadendron (Proteaceae). Contr. Bolus Herb. 3: 1-425. [All rights reserved]

Cold Bokkeveld: Waboomsrivier. From: Manning, JC; Goldblatt, P. 2012. Proteaceae. In: J Manning & P Goldblatt (eds), Plants of the Greater Cape Floristic Region 1: The Core Cape flora. Strelitzia 29: 657-681. South African National Biodiversity Institute, Pretoria. [CC BY]

Flowering time

May

Altitude

800 to 1000 m

Occurrence records map

This map contains point-based occurrences at different locations

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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
Leucadendron sericeum (Thunb.) R.Br.

Published in: Trans. Linn. Soc. London 10(1): 65 (1810)

Synonym(s)

Classification

KINGDOM Plantae

SUBKINGDOM Phanerogamae

PHYLUM Anthophyta

ORDER Proteales

FAMILY Proteaceae

SUBFAMILY Proteoideae

TRIBE Leucadendreae

GENUS Leucadendron

SPECIES sericeum

44 results for Leucadendron sericeum (Thunb.) R.Br.

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Specimen records

Barcode: NBG0221847-0 Collector(s) & number: Helme, NA, 5691 | 2008-10-10

South Africa, Western Cape, Koue Bokkeveld, Tandfontein 402, 200 m SW of offices, east of Ceres road. 32°46'16.7"S: 19°15'11.3"E. Altitude: 845 m.

Data Resource: BODATSA View record

Barcode: NBG0242298-0 Collector(s) & number: Compton, RH, 6446 | 1936-9-25

South Africa, Western Cape, Clanwilliam Dist. Wabooms River.

Data Resource: BODATSA View record

Barcode: NBG0051657-0 Collector(s) & number: Compton, RH, 4163 | 1932-10-

South Africa, Western Cape, Ceres Show.

Data Resource: BODATSA View record

Barcode: NBG0051611-0 Collector(s) & number: Compton, RH, 5031 | 1939-9-29

South Africa, Western Cape, Ceres Dist. Rosendal.

Data Resource: BODATSA View record

Barcode: PRE0365468-0 Collector(s) & number: Story, R, 3011 | 1947-9-4

South Africa, Western Cape, CERES DIV.; 40 MI. FROM CERES ON ROAD N. TO CITRUS- DAL VIA PRINCE ALFRED'S HAMLET

Data Resource: BODATSA View record

Barcode: NBG0051654-0 Collector(s) & number: Compton, RH, 6446 | 1936-9-25

South Africa, Western Cape, Clanwilliam Dist. Wabooms River.

Data Resource: BODATSA View record

Barcode: NBG0076213-1 Collector(s) & number: Williams, I, 440 | 1964-5-28

South Africa, Western Cape, Ceres Dist. Wagenbooms River, Cold Bokkeveld.

Data Resource: BODATSA View record

Barcode: NBG0242292-0 Collector(s) & number: Van der Merwe, P, 1601 | 1963-10-8

South Africa, Western Cape, Ceres Dist.

Data Resource: BODATSA View record

Barcode: PRE0365469-0 Collector(s) & number: Williams, IJM, 1198 | 1968-6-12

South Africa, Western Cape, NORTH COLD BOKKEVELD; CERES; WAGENBOOMS RIVER

Data Resource: BODATSA View record

Barcode: PRE0455986-0 Collector(s) & number: Williams, IJM, 867 | 1966-8-22

South Africa, Western Cape, NORTH COLD BOKKEVELD; CERES; DE STRAAT

Data Resource: BODATSA View record

Barcode: NBG0051615-0 Collector(s) & number: Compton, RH, 5013 | 1934-10-1

South Africa, Western Cape, Ceres Dist. Ceres Wild flower show.

Data Resource: BODATSA View record

Barcode: NBG0242297-0 Collector(s) & number: Oliver, EGH, 4012 | 1972-10-1

South Africa, Western Cape, Wagensbooms River in N Bokkeveld.

Data Resource: BODATSA View record

Barcode: NBG0242302-0 Collector(s) & number: Marloth, R, 10662 | 1921-10-

South Africa, Western Cape, Cold Bokkeveld, Houdenbek.

Data Resource: BODATSA View record

Barcode: NBG0084762-2 Collector(s) & number: Williams, I, 867 | 1966-8-22

South Africa, Western Cape, Ceres Dist. N Cold Bokkeveld, De Straat.

Data Resource: BODATSA View record

Barcode: NBG0242301-0 Collector(s) & number: Marloth, R, 10662 | 1921-10-

South Africa, Western Cape, Cold Bokkeveld Houdenbek.

Data Resource: BODATSA View record

Barcode: NBG0051613-0 Collector(s) & number: Compton, RH, 6445 | 1936-9-25

South Africa, Western Cape, Clanwilliam Dist. Wabooms River.

Data Resource: BODATSA View record

Barcode: NBG0051656-0 Collector(s) & number: Compton, RH, 4163 | 1932-10-

South Africa, Western Cape, Ceres Wild flower show.

General notes: Ceres Wild flower show.

Data Resource: BODATSA View record

Barcode: PRE0365470-0 Collector(s) & number: Esterhuysen, EE, 3489 | 1940-10-3

South Africa, Western Cape, NORTH COLD BOKKEVELD; CERES DIV.

Data Resource: BODATSA View record

Barcode: NBG0051655-2 Collector(s) & number: Compton, RH, 9711 | 1940-10-4

South Africa, Western Cape, Ceres Dist. N Cold Bokkeveld.

Data Resource: BODATSA View record

Barcode: NBG0242295-0 Collector(s) & number: Compton, RH, 16219 | 1944-10-1

South Africa, Western Cape, Ceres Dist. Elandskloof, flats.

Data Resource: BODATSA View record

Barcode: NBG0051610-0 Collector(s) & number: Compton, RH, 5030 | 1934-9-29

South Africa, Western Cape, Ceres, Rosendal.

Data Resource: BODATSA View record

Barcode: NBG0051614-0 Collector(s) & number: Compton, RH, 7218 | 1938-5-31

South Africa, Western Cape, Ceres Dist. Wabooms River (Cold Bokkeveld).

Data Resource: BODATSA View record

Barcode: NBG0084762-1 Collector(s) & number: Williams, I, 867 | 1966-8-22

South Africa, Western Cape, Ceres Dist. N Cold Bokkeveld, De Straat.

General notes: Locally frequent.

Data Resource: BODATSA View record

Barcode: NBG0051624-0 Collector(s) & number: Compton, RH, 5029 | 1934-9-29

South Africa, Western Cape, Ceres Dist. Rosendal, Cold Bokkeveld.

Data Resource: BODATSA View record

Barcode: NBG0087242-0 Collector(s) & number: Williams, I, 1195 | 1968-6-12

South Africa, Western Cape, Ceres Dist. Wagenbooms Rivier. N Cold Bokkeveld.

Data Resource: BODATSA View record

Barcode: NBG0242293-0 Collector(s) & number: Cillie, AE, 14 | 1988--

South Africa, Western Cape, Waboomsriver. Mountain valley. Cold Bokkeveld over Wabooms mountain.

General notes: Flower in October 1988. Widely spread in the Cold Bokkeveld.

Data Resource: BODATSA View record

Barcode: NBG0051655-1 Collector(s) & number: Compton, RH, 9711 | 1940-10-4

South Africa, Western Cape, Ceres Dist. N Cold Bokkeveld.

Data Resource: BODATSA View record

Barcode: NBG0076213-2 Collector(s) & number: Williams, I, 440 | 1964-5-28

South Africa, Western Cape, Ceres Dist. Wagenbooms River, Cold Bokkeveld.

Data Resource: BODATSA View record

Barcode: NBG0051623-0 Collector(s) & number: Compton, RH, 5028 | 1934-9-29

South Africa, Western Cape, Ceres Dist. Rosendal, Cold Bokkeveld.

Data Resource: BODATSA View record

Barcode: SAM0054081-0 Collector(s) & number: Salter, TM, 139 / 7297 | 1939-6-

South Africa, Western Cape, Between Citrusdal and Ceres. Elands Kloof Pan.

Data Resource: BODATSA View record

Barcode: NBG0247421-0 Collector(s) & number: Cowell, C, MSBP 3841 | 2008-11-25

South Africa, Western Cape, Ceres-Citrusdal road. Tantfontein farm, near workers cottages.

Data Resource: BODATSA View record

Barcode: PRE0365471-0 Collector(s) & number: Oliver, EGH, 4012 | 1972-10-1

South Africa, Western Cape, NORTHERN BOKKEVELD; WAGENBOOMS RIVER

Data Resource: BODATSA View record

Barcode: NBG0019404-0 Collector(s) & number: Gill, C, 132 | 1956-1-30

South Africa, Western Cape, Near Blinkberg Pass.

Data Resource: BODATSA View record

Barcode: NBG0051653-0 Collector(s) & number: Compton, RH, 16219 | 1944-10-1

South Africa, Western Cape, Ceres Dist. Elandskloof, flats.

Data Resource: BODATSA View record

Observation records

Date: 10/9/2008 12:00:00 AM

Western Cape, South Africa

Data Resource: iNaturalist View record

Date: 9/26/2015 12:00:00 AM

Western Cape

Data Resource: iNaturalist View record

Date: 9/26/2015 12:00:00 AM

Western Cape

Data Resource: iNaturalist View record

Date: 9/26/2015 12:00:00 AM

Western Cape

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Date: 9/26/2015 12:00:00 AM

Western Cape

Data Resource: iNaturalist View record

Date: 9/26/2015 12:00:00 AM

Western Cape, South Africa

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Date: 9/26/2015 12:00:00 AM

Western Cape, South Africa

Data Resource: iNaturalist View record

Date: 10/11/2020 10:51:00 AM

Western Cape

Data Resource: iNaturalist View record

Date: 9/26/2015 12:00:00 AM

Western Cape

Data Resource: iNaturalist View record

Date: 10/30/2018 4:23:00 PM

Western 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:

2012

SERIES CHAPTER

Proteaceae Manning, JC; Goldblatt, P

In: J Manning & P Goldblatt (eds), Plants of the Greater Cape Floristic Region 1: The Core Cape flora. Strelitzia 29: 657-681

South African National Biodiversity Institute, Pretoria

1972

PERIODICAL/JOURNAL

A revision of the genus Leucadendron (Proteaceae) Williams, IJM

Contributions from the Bolus Herbarium 3: 1-425

No results found for Leucadendron sericeum (Thunb.) R.Br.

Status

Status and criteria

EN

Assessor(s)

Plantae Coordinator

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