Dorstenia hildebrandtii Engl.

Species

Angiosperms > Rosales > Moraceae > Dorstenia

Characteristics

Herb up to ± 70 cm. tall, rhizomatous (or tuberous); stems ascending to erect, branched (the branches often arrested, with minute leaves) or unbranched, fleshy to sometimes thickly succulent, the basal part often swollen, sometimes forming a globose to pear-shaped tuber up to 4 cm. across, the leafy part 1–5(–7) mm. in diameter, glabrous to sparsely puberulous; scars of the leaves, stipules and inflorescences often conspicuous and prominent.. Leaves in spirals; lamina chartaceous to papyraceous when dry, oblong to elliptic, lanceolate, oblanceolate or linear, (0.5–)1–12(–20) × (0.3–)1–16 cm., apex obtuse to acute, base cuneate to attenuate or sometimes subobtuse; margin ± irregularly and sometimes coarsely crenate to dentate, sometimes subentire, when dry sometimes ± revolute; upper surface glabrous and smooth, scabridulous or sparsely puberulous on the midrib, lower surface puberulous to glabrous; lateral veins 2–10(–12) pairs; petiole (0.1–)0.2–2(–3) cm. long, 0.5–1 mm. thick, puberulous, mainly adaxially; stipules subulate to ovate, up to 1.5(–2) mm. long, persistent.. Inflorescences solitary or sometimes in pairs; peduncle 0.2–1.2(–2.5) cm. long, ± 0.5 mm. thick, sometimes recurved.. Receptacle discoid to broadly turbinate or funnel-shaped, sometimes subnaviculate,0.4–1.2 cm. in diameter (or wide); flowering face subcircular to substellate or narrowly elliptic to 3–6-angular, margin very narrow or lacking; appendages in 2 rows, the inner (marginal) row numerous, semi-circular to triangular, up to 2 mm. long, forming a crenate to dentate rim, outer (submarginal) row 2–12, narrowly triangular to band-shaped or filiform, (2–)5–22(–25) mm. long.. Staminate flowers crowded or slightly spaced; perianth-lobes (2–)3(–4); stamens (2–)3(–4).. Pistillate flowers numerous, scattered; perianth tubular; stigmas 2.. Endocarp-body tetrahedral, 1–1.5 mm. in diameter, slightly tuberculate.
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Leaves spirally arranged; lamina oblong to elliptic, lanceolate, oblanceolate or linear, (0.5)1–12(20) x (0.3)1–16 cm., chartaceous to papyraceous when dry, apex obtuse to acute, base cuneate to attenuate to subobtuse; margin irregularly coarsely crenate to dentate, sometimes subentire, ± revolute when dry; superior surface glabrous and smooth, scabridulous or sparsely puberulous on the midrib, the inferior surface puberulous to glabrous; lateral veins 2–10(12) pairs; petiole (0.1)0.2–2(3) cm. long, 0.5–1 mm. thick, puberulous, mainly adaxially; stipules subulate to ovate, up to 1.5(2) mm. long, persistent.
Stems ascending to erect, branched (the branches often arrested, with minute leaves) or unbranched, fleshy to sometimes thickly succulent, the basal pan often swollen, sometimes becoming globose to pear-shaped, up to 4 cm. across, the leafy part 1–5(7) mm. in diam., glabrous to sparsely puberulous; scars of leaves, stipules and inflorescences often conspicuous and prominent.
Inflorescences solitary (or in pairs); peduncle 2–12(25) mm. long, c. 0.5 mm. thick, sometimes recurved; receptacle discoid to broadly turbinate or funnel-shaped, sometimes subnaviculate, 0.4–1.2 cm. in diam. (or wide); flowering face subcircular to substellate or narrowly elliptic to 3–6-angular in outline; margin very narrow or lacking.
Receptacle appendages in 2 rows, those of the inner (marginal) row numerous, semicircular to triangular, up to 2 mm. long, forming a crenate to dentate rim; appendages of the outer (submarginal) row 2–12, narrowly triangular to band-shaped or filiform, (2)5–22(25) mm. long.
Staminate flowers ± crowded; perianth lobes (2)3(4); stamens (2)3(4).
Pistillate flowers numerous, scattered; perianth tubular; stigmas 2.
Endocarp body tetrahedral, 1–1.5 mm. in diam., slightly tuberculate.
Herb up to c. 70 cm. tall, rhizomatous or tuberous.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality monoecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.7
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light 7-9
Soil humidity 1-3
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

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

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Dorstenia hildebrandtii world distribution map, present in Burundi, Kenya, Rwanda, and Tanzania, United Republic of

Conservation status

Dorstenia hildebrandtii threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:851565-1
WFO ID wfo-0000654445
COL ID 6DFYB
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Dorstenia rhomboidea Dorstenia braunii Dorstenia brevifolia Dorstenia marambensis Dorstenia tanneriana Dorstenia hildebrandtii var. hildebrandtii Dorstenia hildebrandtii

Lower taxons

Dorstenia hildebrandtii var. schlechteri