Heracleum abyssinicum (Boiss.) C.Norman

Species

Angiosperms > Apiales > Apiaceae > Heracleum

Characteristics

Perennial, 0.2–1.8(–2.5 when growing in and supported by bushes) m., with fistular, sulcate-striate, densely pilose stems; stems 3–8 mm. wide below, simple or frequently with one or more long, ascending branches from the lower half upwards, branches with much-reduced leaves.. Basal leaves several, ± narrowly oblong in outline, ± 8–23 × 2–8 cm., simply pinnate with 3–7 pairs of roundish to ovate or broadly deltoid, 1–4.5 × 0.8–5 cm. irregularly incised-dentate to subpinnatifid leaflets, teeth blunt to subacute, mucronate; indumentum ± generally distributed over both surfaces but densest on the veins and margins; sheaths striate, rather narrow, ± 1.5–3 × 0.8–1 cm.; petiole ± 4–11 cm.; median stem leaves shortly petiolate or sessile on the sheaths, leaflets similar or more sharply dentate and/or with narrower segments; sheaths not very broad and inflated, ± 1–2.5 × 0.8–1 cm.; uppermost leaves much reduced, often with a very small lamina; sheaths small, up to ± 2 × 0.8 cm.. Umbels several, on sulcate peduncles 2.5–12 cm. long; rays (4–)6–18, sulcate, densely pilose, 1.5–6 cm.; involucre usually present but sometimes very small, of ± 3–6 narrowly linear or broader bracts mostly ± 3–10 mm. long; partial umbels ± 15–35-flowered, pedicels 3–10 mm., commonly furnished with dense and broad-based tuberculiform hairs and fewer, clearly marked off, longer glandular hairs, sometimes with short tuberculiform hairs only; involucels of 4–9 linear bracteoles 2–7 mm. in length, rarely exceeding the pedicels in young fruit.. Calyx-teeth narrowly triangular to linear, sometimes persistent in fruit, ± 0.5 mm.. Flowers white or creamy, the outermost petals of the outer partial umbels slightly radiate, cordate, 1.5–3 mm.; inner petals oblong-obovate with an incurved tip, ± 1.25 mm.. Fruit obovate to oblong-obovate, 7–12 × 5–8 mm., thinly pilose throughout; stylopodia conical, not exceeding the apical notch of the fruit; styles arcuate-recurved, 1.5–2 mm.; vittae 4 dorsally, 2 on the commissure, all reaching to near the base or the commissural somewhat shorter.
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Fruit c. 9 × 5 mm., obovate, strongly dorsally compressed; calyx teeth obsolete; stylopodium conical with somewhat lobed base; styles 1·5 times as long as the stylopodium, tending to fall in fruit. Fruit wings well developed and forming a notch in which the stylopodium is situated at maturity. Dorsal ridges filiform.
Inflorescence of terminal and lateral compound umbels. Rays 7–14, subequal; bracts 0-several, small, linear and inconspicuous. Partial umbels with 10–20 flowers, mostly hermaphrodite but sometimes with a small group of male flowers at the centre; bracteoles 0-few, similar to the bracts; pedicels relatively robust.
Petiole and rhachis with hairs similar to those on the stem; superior surface of the leaflets with scattered, short, fine appressed hairs; inferior surface nearly glabrous with a few hairs on the veins only; margin with a fringe of short spreading hairs.
Stem terete, solid, rather coarsely striate with clearly marked ridges, often purplish especially near the base, covered with numerous short, erect bristly hairs some of which are glandular; the base covered with fibrous remains of old leaf bases.
Leaves up to 30 × 7 cm., simply pinnate, mostly basal, with 3–7 pairs of ovate-deltate leaflets and 1 terminal one.
Leaflets jaggedly cut and toothed, sometimes nearly reaching the midrib; teeth ending in a short hyaline mucro.
Leaves sheathing at the base; petiole approximately 1/3 the total length of the leaf.
Perennial or biennial herbs with fleshy to woody taproots, up to c. 1 m. tall.
Vittae 1 in each interval and 2 in the commissural face.
Petals white, the outer ones more or less radiate.
Carpophore deeply 2-cleft.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.9 - 1.0
Root system tap-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 4-9
Soil humidity 3-7
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

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

Cultivation

Mode -
Germination duration (days) 30 - 90
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Heracleum abyssinicum world distribution map, present in Eritrea, Ethiopia, Kenya, Tanzania, United Republic of, and Uganda

Identifiers

LSID urn:lsid:ipni.org:names:842928-1
WFO ID wfo-0001068959
COL ID 3KX9N
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Pimpinella nandensis Malabaila stolzii Malabaila rivae Peucedanum stolzii Peucedanum rivae Heracleum abyssinicum Malabaila abyssinica Peucedanum kirungae