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Compilation
Nenax coronata

4 Images see all

Isotype of Nenax coronata Puff [family RUBIACEAE]
Isotype of Nenax coronata Puff [family RUBIACEAE]
Isotype of Nenax coronata Puff [family RUBIACEAE]
Isotype of Nenax coronata Puff [family RUBIACEAE]
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Name

Identification
Isotype of Nenax coronata Puff [family RUBIACEAE ] (stored under name); Verified by Not on sheet,
Related name
  • Nenax coronata

Flora

Entry for Nenax coronata [family ACANTHACEAE]
Herbarium
South African National Biodiversity Institute, Compton Herbarium, Cape Town (SAM)
Collection
Flora of Southern Africa
Resource Type
Reference Sources
Entry From
Flora of South Africa, (2003) Author: Dr J.P. Roux
Names
Nenax coronata [family ACANTHACEAE]
Information
Dwarf shrub, ± erect, often with thick, woody root. Stems c. 0,25^0,4 m long, much-branched, branches usually single at nodes, branching often pseudodichotomous* and ± irregular. Leaves decussate; blades (3-)5-9 (-11) x 0,7-1 mm, linear, needle-like and ± rigid, semiterete to ± triangular in section, gla­brous or margins ± papillate, upper surface and midrib sometimes (dark) brownish red. Flowers mostly single at nodes, sometimes also terminal and overtopped by short lateral shoots arising below; corolla 5(rarely 4)-merous, yellowish (?). ("male"): tube c. 0,8 mm long, funnel-shaped, lobes 2,5-3,4 (-4) x 0,6-1 mm; anthers 1,4-2,4 mm long; minute rudimentary ovary sometimes with well discernible calyx lobes. ("female"): tube 0,1-0,2 mm long, lobes 0,3-0,8 x 0,1-0,2 mm; stigmas (1,5—)2—4 mm long; ovary 1,2-2 x 0,7-1 mm, with 5 conspicuous calyx lobes. Fruit dehiscent, supported by a small carpophore or carpophore sometimes ± absent, reddish brown; mericarps 3-5 X l,9-2,5(-3) mm, oblong to obovate, glabrous or papillate, with 3 or 2 triangular calyx lobes c. 0,6-1,2 X 0,3-0,5 mm. Chromosome number. 2n=22. Reference: * Vigorous lateral branches push main axes to the side; a Y-like appearance of the branchings results.
Habitat
Allied to the remaining Nenax species with non-in­flated, dehiscent fruits (species 3, 5 and 6) but perhaps closest to N. divaricata, which differs primarily in having 4-merous ("male") flowers and smaller fruits with rather minute calyx lobes. In the field, N. coronata and N. divaricata can be easily distinguished by their growth form. In N. coronata branches usually arise singly at nodes, branching may be­come seemingly dichotomous and, subsequently, snoots often show a distinct zig-zag pattern. In N. divaricata branching is more regular, the divaricate branches mostly arise in pairs at nodes.
Use
4. Nenax coronata Puff, sp. nov., meri-carpiis majoribus, lobis calycis longioribus, corollis 5-meris et habitu dissimili a N. divari-cata facile distinguitur.
Range
Endemic to the western Cape; confined to the southern Vanrhynsdorp distr. (Giftberg) and adjacent Clanwilliam distr. Growing in sandy areas between rocks or in cracks of rocks in dry Mountain Fynbos. Map 34.

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