PLANTAE / PHANEROGAMAE / ANTHOPHYTA / POALES / CYPERACEAE / CYPEROIDEAE / SCHOENEAE / SCHOENUS / DREGEANUS
Caespitose, perennial graminoid, phyllopodic, spikelets linear. Culms terete with shallow ridges, (215-)352-438(-474) x 0.5-0.8(-1.0) mm. Leaves basal, ranging from rudimentary to fully developed, less than half of culm height, 1-5, (5-)9-71(-161) x 0.2-0.5(-0.7) mm, developing from sheaths along culm, usually proximally channelled, straight, margin usually serrate above sheath. Sheaths reddish-brown to dark reddish-black, longitudinally striate, closed except distal portion, semi-firm to firm. Ligule 0.2-0.4(-1.0)mm. Inflorescence a pseudolateral panicle, (17-)24-31(-52) x 3.0-5.0(-7.5) mm, proximal rachis length (2.5-)9.0-12.8(-28.0) mm. Proximal primary inflorescence bracts (5-)35-50(-81) mm long, narrow, without lateral chartaceous extensions, involute, apex acute but breaking-off readily, exceeding length of inflorescence. Spikes 2-4, (8-)11-17(-25) mm long, aggregated into long, narrow clusters along rachis, overlapping. Spikelets linear, 1-3 spikelets per spike, (6.1-)7.2-9.3(-11.0) x (0.7-)1.1-1.6(-2.2) mm, pedicellate (pedicels varying in length), colour ranging from light to dark brown/black, texture ranging from chartaceous to firm and opaque, not concealed by primary inflorescence bracts, varying number of sterile glumes at spikelet base. Proximal spikelet prophyll not fully developed or absent. Rachilla (0.2-)2.0-4.0(-8.6) mm long. Glumes 3-8 per spikelet, texture chartaceous to opaque and firm, hyaline margins sometimes present (more evident on darker coloured spikelets), lower glumes often relatively long, proximal glume (1.6-)3.1-5.2(-7.1) mm long, subproximal glume (1.8-)3.2-5.2(-8.5) mm long, upper glumes longer than basal ones, apex acuminate to obtuse. Glume mucros often absent, proximal mucro 0-0.9(-1.4) mm long, subproximal mucro 0-1.2(-2.3) mm long. Stamens 3 or 6 (usually 3) per floret, anthers 1.9 mm long (1 observed). Stigmas 3-branched, vestigial stigmas present. Perianth bristles sometimes present (see Browning and Gordon-Gray, 1995). Suprafloral axis sometimes thickening and strengthening, eventually curving. Nutlet 1.6-1.8(-2.3) x 0.9-1.0(-1.2) mm, obovoid or oblong, trigonous, rough (especially near the base and apex), stipitate, yellowish in colour when young and turning reddish-brown at the apex and base with maturity; nutlet beak short and narrow, 0.1-0.2 mm. From: Elliott, TL; Muasya, AM. 2020. A taxonomic revision of the Epischoenus group of Schoenus (Cyperaceae, tribe Schoeneae). S. African J. Bot. 135: 296-316. [https://doi.org/10.1016/j.sajb.2020.08.029] [Copyright held by the South African Association of Botanists (2020); http://www.sciencedirect.com/science/journal/0254629] [CC BY]
Tufted perennial, 20-70 cm. Spikelets pale (golden?) brown. From: Archer, C; Muasya, M. 2012. Cyperaceae. In: J Manning & P Goldblatt (eds), Plants of the Greater Cape Floristic Region 1: The Core Cape flora. Strelitzia 29: 84-96. South African National Biodiversity Institute, Pretoria. [CC BY] As: Epischoenus dregeanus (Boeckeler) Levyns
The last internode of the spikelets of S. dregeanus is elongated, which is a character common throughout all species of the Epischoenus group. However, the presence of leaves along the lower part of its culms differentiates S. dregeanus from the other members of the Epischoenus group, although this character is shared with most species in both the S. compar-S. pictus and S. cuspidatus groups. Schoenus dregeanus has distinctive nutlets that are rough at the base and apex, whereas other species in the Epischoenus group have either entirely matted or shiny nutlets. The linear spikelets of S. dregeanus are most similar in shape to those of Schoenus ligulatus (Boeckeler) Kuntze; however, the spikelets of S. dregeanus lack prophylls at their base. The distribution of S. dregeanus and S. gradllimus overlap and sometimes the two species resemble each other; however, the spikelets of S. gradllimus are often pendulous in this region. From: Elliott, TL; Muasya, AM. 2020. A taxonomic revision of the Epischoenus group of Schoenus (Cyperaceae, tribe Schoeneae). S. African J. Bot. 135: 296-316. [https://doi.org/10.1016/j.sajb.2020.08.029] [Copyright held by the South African Association of Botanists (2020); http://www.sciencedirect.com/science/journal/0254629] [CC BY]
Schoenus dregeanus tends to occur in moist, mountainous habitats ranging from about 600-1400 m in elevation. From: Elliott, TL; Muasya, AM. 2020. A taxonomic revision of the Epischoenus group of Schoenus (Cyperaceae, tribe Schoeneae). S. African J. Bot. 135: 296-316. [https://doi.org/10.1016/j.sajb.2020.08.029] [Copyright held by the South African Association of Botanists (2020); http://www.sciencedirect.com/science/journal/0254629] [CC BY]
Schoenus dregeanus is a narrowly-distributed species, with most specimens having been collected from the Cederberg and Worcester areas of South Africa. From: Elliott, TL; Muasya, AM. 2020. A taxonomic revision of the Epischoenus group of Schoenus (Cyperaceae, tribe Schoeneae). S. African J. Bot. 135: 296-316. [https://doi.org/10.1016/j.sajb.2020.08.029] [Copyright held by the South African Association of Botanists (2020); http://www.sciencedirect.com/science/journal/0254629] [CC BY]
December to April
600 to 1400 m
This map contains point-based occurrences at different locations
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
Published in: Revis. Gen. Pl. 2: 756 (1891)
Type: South Africa, Western Cape, Du Toits Kloof, without date, Drege 1632a (B 10 0166741, lecto.). Lectotype designated by Levyns, South African Journal of Botany 25: 77 (1959).
Elynanthus dregeanus Boeckeler
Published in: Linnaea 38(3): 262 (1874)
Tetraria dregeana (Boeckeler) C.B.Clarke
Published in: Consp. Fl. Afr. [T.A. Durand & H. Schinz] 5: 661 (1894)
Epischoenus dregeanus (Boeckeler) Levyns
Published in: J. S. African Bot. 25: 76 (1958)
Classification
KINGDOM Plantae
SUBKINGDOM Phanerogamae
PHYLUM Anthophyta
ORDER Poales
FAMILY Cyperaceae
SUBFAMILY Cyperoideae
TRIBE Schoeneae
GENUS Schoenus
SPECIES dregeanus
9 results for Schoenus dregeanus (Boeckeler) Kuntze
Barcode: PRE0101315-0 Collector(s) & number: Esterhuysen, EE, 12668 | 1946-4-19
South Africa, Western Cape, Ceres Div.; Schurweberg, Cold Bokkeveld.
Data Resource: BODATSA View record
Barcode: PRE0102906-0 Collector(s) & number: Schlechter, FRR, 9964 | 1896-1-15
South Africa, Western Cape, [CERES DIST.;] PONE MICHELL'S PASS.
Data Resource: BODATSA View record
Barcode: PRE0103945-0 Collector(s) & number: Esterhuysen, EE, 8341 | 1942-12-6
South Africa, Western Cape, WORCESTER DIV.; WAAIHOEK MTS.
Data Resource: BODATSA View record
Barcode: PRE0101291-0 Collector(s) & number: Schlechter, FRR, 9334 | 1896-11-21
South Africa, Western Cape, FRANSCHHOEK.
Data Resource: BODATSA View record
Barcode: PRE0102723-0 Collector(s) & number: Esterhuysen, EE, 13798 | 1947-2-26
South Africa, Western Cape, CLANWILLIAM DIV.; CEDARBERG; BELOW TAFELBERG.
Data Resource: BODATSA View record
Barcode: PRE0103942-0 Collector(s) & number: Esterhuysen, EE, 12662 | 1946-4-19
South Africa, Western Cape, COLD BOKKEVELD; CERES DIV.; SCHURWEBERG
Data Resource: BODATSA View record
This map contains point-based occurrences at different locations
2020
PERIODICAL/JOURNAL
A taxonomic revision of the Epischoenus group of Schoenus (Cyperaceae, tribe Schoeneae) Elliott, TL; Muasya, AMSouth African Journal of Botany 135: 296-316
2017
PERIODICAL/JOURNAL
Taxonomic realignment in the southern African Tetraria (Cyperaceae, tribe Schoeneae; Schoenus clade) Elliott, TL; Muasya, AMSouth African Journal of Botany 112: 354-360
2012
SERIES CHAPTER
Cyperaceae Archer, C; Muasya, MIn: J Manning & P Goldblatt (eds), Plants of the Greater Cape Floristic Region 1: The Core Cape flora. Strelitzia 29: 84-96
South African National Biodiversity Institute, Pretoria
1959
PERIODICAL/JOURNAL
A revision of Epischoenus C.B.Cl. Levyns, MRBJournal of South African Botany 25: 69-82
No results found for Schoenus dregeanus (Boeckeler) Kuntze
Status and criteria
NE
Assessor(s)
Plantae Coordinator
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