Pelargonium tomentosum Jacq.

Species

Angiosperms > Geraniales > Geraniaceae > Pelargonium l'hér.

Characteristics

Decumbent, much-branched, peppermint-scented subshrub, up to 0.5 m high and 1.5 m in diameter. Stems herbaceous and brittle, becoming somewhat woody with age, villous and densely interspersed with glandular hairs, greyish-green but becoming brownish with age. Leaves with soft hairs and numerous glandular hairs interspersed, greyish-green; lamina 3-(5)-palmatilobate to 3-(5)-palmatipartite, base cordate, apices of lobes mostly obtuse (rarely acute), margins irregularly crenate-serrate, adaxially villous, abaxially tomentose, (25-)40-60(-110) x (35-)50-70(-120) mm; petiole (30-)80-130(-180) mm long; stipules triangular to ovate, acute to acuminate, 6-20 x 4-12 mm. Inflorescence: flowering branches profusely branched, with or without smaller foliar leaves; peduncles 30-150 mm long, villous and densely interspersed with glandular hairs; involucral bracts narrowly ovate to lanceolate, acuminate, indumentum as on peduncles, 4-5 x 1-2 mm; pseudo-umbels with 4-15 flowers each. Pedicel 18-20 mm long, indumentum as on peduncles. Hypanthium ±2 mm long. Sepals elliptic to lanceolate, indumentum abaxially as on peduncles, green with white margins, ±6 x 2-3,5 mm. Petals white with purple markings; posterior two elliptic to obovate with eared bases, reflexed at ±90°, ±9 x 5 mm; anterior three linear-spathulate with very narrow claws practically straight, ±11 x 1.5 mm.
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Subshrub to c. 75 cm tall, smelling strongly of peppermint. Stems, lvs and infl. with ± velvety white tomentum, and glandular scales beneath hairs. Petiole to c. 30 cm long. Stipules ovate-acuminate, brown and membranous. Lamina to 12 × 15 cm, broadly obovate, rather shallowly 3-lobed with each lobe usually lobulate, serrate-dentate and extending 1/4-1/2 way to midrib; base usually shallowly cordate, sometimes deeply so. Infl. of several umbels, each with 5-8 fls; hairs dense, mostly long and simple but some short and glandular; peduncles often = petioles; pedicels 2-3.5 cm long, generally radiating widely in umbels of 6-8 fls. Sepals 5.5-6.5 mm long, ± triangular-ovate, green, with copious long white hairs; calyx spur c. 2 mm long. Corolla white or pinkish; upper 2 petals 7-8.5 mm long, ± oblong, usually with asymmetric base, crimson-purple-marked in lower 1/2; lower 3 petals 8-10.5 mm long, linear or ligulate. Style crimson or purplish, c. 4 mm long; stigmas crimson or purplish. Mericarps not seen.
Sprawling aromatic shrub to 50 cm. Leaves 3-5-palmatilobed, soft, velvety, ± 7 cm diam. Flowers to 15 on branching peduncles, ± 18 mm diam., white, upper petals several times wider; hypanthium ± 2 mm long, much shorter than pedicel.
A shrub. It keeps growing from year to year. It grows 50 cm tall and spreads 70 cm wide. The flowers have a scent.
Life form perennial
Growth form
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.7
Mature height (meter) 0.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a warm temperate plant. It is best in shady moist places. It is damaged by frost. It needs well-drained soils.
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Semi-shaded moist places. Sandy soils on the margins of forests along streams.
Light 6-8
Soil humidity 3-6
Soil texture 4-6
Soil acidity 4-8
Soil nutriment -
Hardiness (USDA) 9-11

Usage

The leaves have a mint scent. They are used to flavour cakes, puddings, pies, desserts and tea. The leaves are used to make a peppermint flavoured tea.
Uses essential oil material medicinal tea
Edible flowers leaves
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from seeds. They germinate best with a temperature above 13°C. Plants can also be grown from cuttings.
Mode cuttings seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Pelargonium tomentosum leaf picture by Arielle Wolffs (cc-by-sa)

Distribution

Pelargonium tomentosum world distribution map, present in New Zealand and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:377100-1
WFO ID wfo-0001064404
COL ID 75ZBF
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Pelargonium villosum Pelargonium x verbenifolium Pelargonium piperitum Pelargonium piperatum Pelargonium micranthum Pelargonium majestum Pelargonium x regale Ciconium micranthum Pelargonium corymbosum Geraniospermum tomentosum Hoarea villosa Pelargonium tomentosum