Protea tenax R.Br.

Species

Angiosperms > Proteales > Proteaceae > Protea

Characteristics

A low, decumbent shrub with trailing, sparsely branched stems arising from a woody rootstock. Stems to 2 m in length, usually trailing, occasionally suberect, 3-6 mm in diam., puberulous at first, soon quite glabrous, usually flushed with carmine. Leaves linear, narrowly lanceolate to lanceolate-elliptic or oblanceolate, 80-180 mm long, 2-28 mm wide, apices acute to obtuse; slightly twisted and decurrent at base; lamina flat or only occasionally with incurved margins. Inflorescences shallowly crateriform, opening widely, 40-60 mm in diam. Involucral receptacle broadly convex, 15-20 mm in diam. Involucral bracts 4-5 seriate; innermost series broadly oblong, 35-40 mm long, 10-15 mm wide, the apices concave and rounded; outer series very broadly ovate, 10-20 mm long, 10-20 mm wide, apices obtuse to rounded; outer surface sparsely sericeous becoming irregularly glabrous, margins minutely fimbriate; bracts greenish-yellow, sometimes flushed with carmine. Perianth straight to slightly adaxially arcuate, 25-30 mm long, glabrous except for the lanate apices of the perianth limbs; tube 8 mm long; claws hyaline, undulate; limbs 8 mm long, linear, apices acuminate, thickly lanate with a dense white indumentum. Style 25-30 mm long, straight to slightly adaxially curved. Pollen presenter linear, acute, 5 mm long. Hypogynous scales irregularly ovate, 1 mm long. Flowering is erratic but appears to be correlated with rainfall which, although spread more or less evenly throughout the year, tends to have a slight winter maximum. Most of the flower-heads open between May and September.
More
Dwarf shrub, lignotuberous sparsely branched, spreading, 0.5-0.9 m high. Leaves pointing vertically from horizontal stems, petiolate, linear to lanceolate, 80-180 x 2-28 mm, midrib prominent, hairless when mature, acute to obtuse. Flower head bowlshaped, 40-60 mm in diam., overtopped by surrounding leaves. Involucral bracts 4-or 5-seriate; outer series broadly ovate, obtuse to rounded, 10-20 x 10-20 mm, green-yellow flushed carmine, fine hairs on outer surface, outermost bracts with leaf-like extensions; inner series oblong, rounded, 35-40 x 10-15 mm. Flowers 25-30 mm long, straight, tube 8 mm long, glabrous, tips with white-woolly hairs; style 25-30 mm long, straight to slightly curved; pollen presenter 5 mm long, linear. Flowering time May-Sept.
Trailing, resprouting shrub to 4 m diam. Leaves secund, linear-oblanceolate. Flower heads cup-shaped, 40-60 mm diam., involucral bracts green to yellow, flushed pink, margins silky, style 25-30 mm long.
Life form -
Growth form shrub
Growth support free-standing
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Sexuality -
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Mature width (meter) -
Mature height (meter) 0.5 - 0.9
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Nitrogen fixer -
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Environment

Light -
Soil humidity 4-6
Soil texture 5-8
Soil acidity -
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Hardiness (USDA) 9-11

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 30 - 90
Germination temperacture (C°) 18 - 23
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Images

Protea tenax unspecified picture

Distribution

Protea tenax world distribution map, present in South Africa

Conservation status

Protea tenax threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:706181-1
WFO ID wfo-0001106851
COL ID 4N32P
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Scolymocephalus tenax Protea magnoliifolia Erodendrum foetidum Erodendrum tenax Protea tenax Protea undulata Protea acaulis var. cockscombensis