Protea caffra Meisn.

Species

Angiosperms > Proteales > Proteaceae > Protea

Characteristics

Erect shrubs or small trees 3-8 m in height with a distinct main stem or trunk up to 400 mm in diam. and an irregular to spreading crown; more rarely an erect, branched shrub 1-3 m in height, multiple-stemmed and lacking a definite trunk. Bark black, brown or grey, reticulately fissured when mature. Stems glabrous 4-12 mm wide. Leaves linear-elliptic, linear-falcate, narrowly to broadly elliptic, narrowly to broadly oblanceolate, occasionally subfalcate to falcate, 70-250 mm long, 4-45 mm wide, apices acute or obtuse; glabrous, heavily coriaceous to thin textured and papyraceous, pale green, dull green or variously glaucous; tending to be clustered on current year's growth; sessile to subpetiolate. Inflorescences usually solitary but occasionally with 3 or 4 clustered at shoot apex; globose to ovoid, broadly and shallowly crateriform on opening, 45-80 mm in diam.; sessile to stipitate, stipe up to 25 mm long, glabrous to densely sericeous. Receptacle broadly convex to flat, 20-30 mm in diam. Involucral bracts 6-8 seriate; outer series very broadly ovate to deltate, 10-20 mm wide, 5-7 mm long, densely to sparsely beset with a silvery sericeous indumentum distally, or quite glabrous; tightly imbricate; inner series oblong to broadly oblong-spathulate, 30-50 mm long, 10-20 mm wide, apices rounded to subacute, slightly concave, glabrous, or occasionally with sparsely sericeous areas on the basal region of the bracts. Perianth 45-60 mm long, straight, usually glabrous externally except at limb apices; tube region winged, 7-14 mm long, broadened or dilated, glabrous externally, inner surface varying from glabrous through sparsely to densely pubescent distally with a tawny to whitish indumentum, the pubescence usually (though not always) extending up the inner surface of the claws; claws filiform, usually glabrescent and only occasionally pubescent externally, inner surface glabrous or pubescent; limbs linear-elliptic, 10-18 mm long, glabrous to sparsely villous on the abaxial limbs and apices, with a tawny to whitish indumentum; apices curved, forming short acute horns. Style adaxially arcuate, 40-60 mm long, slender. Pollen presenter linear-filiform, acute, straight, 7-12 mm long, geniculate at junction with style. Ovary 5-8 mm long, obconic, covered with straight tawny trichomes. Hypogynous scales acute, 2 mm long. Flowering takes place during a short but well-defined season of about 6-8 weeks. At the coast flowering may commence as early as October but at inland localities December and January is the peak flowering period. A sweet, slightly sulphurous odour is emitted from the open inflorescences, serving as a powerful attractant to scarab beetles, notably Meltnesthes exilis; Pachnoda rufa; Trichostetha fascicularis and Oxythyrea testaceoguttata.
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Shrub to small tree (0.3-)1-4(-7) m. high.. Young stems ± glabrous, smooth, usually dark brown in the Flora area.. Leaves usually linear-elliptic to linear-oblanceolate, rarely (not in the Flora area) obovate to oblanceolate, (5-)6-17 × (1-)1.3-4(-4.5) cm., (1.5-)4-10 times as long as broad, glabrous.. Heads 6-13 cm. in diameter.. Middle bracts obtuse to rounded, 1.7-3 × (1-)1.2-2 cm., glabrous or densely pubescent when young and rapidly glabrescent, whitish or green to brown or dark red; inner bracts (3.5-)4-8 × 0.5-1 cm., linear-oblong, like middle bracts in colour and indumentum.. Flowers 4-7 cm., white or (in other subspp.) often pink.. Perianth-base glabrous; claw glabrous to villous both inside and outside; limb 10-21 mm., densely villous when young at least at the tip but usually glabrescent.. Style glabrous.
Small tree, erect, single trunk, 3-8 m high, or multi-stemmed, branched shrub, 1-3 m high. Leaves linear-oblanceolate to elliptic, 70-170 x 13-30 mm, glabrous, glaucous, coriaceous, acute or obtuse. Flower head globose to ovoid, 55-70 x 40-70 mm, solitary or clustered. Involucral bracts 6-8-seriate, pink to cream-coloured, imbricate, glabrous to hairy; outer series ovate to triangular, acute, 5-7 x 10-20 mm; inner series oblong to spathulate, rounded, 30-50 x 10-20 mm. Flowers 45-60 mm long, tube 10-14 mm long, hairy or glabrous; style 40-60 mm long, curved; pollen presenter 7-12 mm long, thread-like, bent at base. Flowering time Oct.-Jan.
Middle bracts 1.7–3 × (1)1.2–2 cm, obtuse to rounded, glabrous or densely pubescent when young and rapidly glabrescent, whitish or green to brown or dark red; inner bracts (3.5)4–8 × 0.5–1 cm, linear-oblong, like the middle bracts in colour and indumentum.
Perianth base glabrous; claw glabrous to villous both outside and inside; limb 10–21 mm long, densely villous when young at least at the tip, but usually glabrescent.
Young stems ± glabrous, smooth, usually dark in the more northern subspecies and usually greyish in the southern subspecies.
Leaves (5)6–17 × (1)1.3–4(4.5) cm, (1.5)3–10 times as long as broad, variable in shape (see subspecies), glabrous.
Flowers 4–7 cm long, white or rarely pink.
Shrub to small tree (0.3)1–4(7) m high.
Heads 6–13 cm diameter.
Style glabrous.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention evergreen
Sexuality -
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 3.0 - 4.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Found in a wide range of habitats from humid, tropical coastlines to grassland and high ridges; on a variety of geological formations, favouring poor, sandy or quartzite soils, acid in nature, but also sometimes even on alkaline dolomite.
Light -
Soil humidity 10-12
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

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

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) 30 - 90
Germination temperacture (C°) 18 - 23
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Protea caffra habit picture by Louis Germain (cc-by-sa)

Leaf

Protea caffra leaf picture by Torsten one toto (cc-by-sa)
Protea caffra leaf picture by Torsten one toto (cc-by-sa)
Protea caffra leaf picture by Njabulo Skhosana (cc-by-sa)

Flower

Protea caffra flower picture by Giriraj Jadeja (cc-by-sa)
Protea caffra flower picture by Jerome Sudre (cc-by-sa)
Protea caffra flower picture by Pieter Hughes (cc-by-sa)

Distribution

Protea caffra world distribution map, present in South Africa

Conservation status

Protea caffra threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:705664-1
WFO ID wfo-0001106739
COL ID 4N2MQ
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Protea stipitata Protea peglerae Protea bolusii Protea multibracteata Protea rhodantha Protea baurii Protea natalensis Protea caffra subsp. falcata Scolymocephalus caffer Protea caffra

Lower taxons

Protea caffra subsp. nyasae Protea caffra subsp. kilimandscharica Protea caffra subsp. gazensis