Pacific Island Ecosystems at Risk (PIER)

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Malvastrum tomentosum
(L.) S.R. Hill, Malvaceae
No images for this taxon


Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Malva tomentosa L.

Habit:  shrub

Description:  "Shrubs 1-2 m tall, the stems stellate-pubescent, the hairs appressed, 0.5 mm long or less, mostly 6-8-armed.  Leaf blades mostly 2-6 cm long, 1-4 cm wide, ovate or ovate-triangular, basally truncate to subcordate and entire, otherwise prominently dentate, acute, palmately 5 (-7)-nerved, minutely and evenly stellate-pubescent above and beneath, the hairs 6-12-armed, somewhat discolorous; petioles 1/4-1/2 length of blade, stellate-pubescent; stipules 3-4 mm long, subulate, caducous.  Inflorescences in axillary and terminal glomerules (and on lateral axillary peduncles), the whole an interrupted more or less leafy spiciform inflorescence; flowers subsessile, the pedicels 2 mm long or less; involucellar bracts 3, subulate, 3-4 mm long; calyx 7-9 mm long, densely stellate-tomentose, ca half-divided; petals 6-8 mm long, yellow, prominently ciliate on margins of claw, otherwise glabrous; staminal column 3-4 mm long, pallid, stellate-pubescent; styles exceeding androecium, ca 10.  Fruits oblate, 6 mm in diameter, densely stellate-tomentose; mericarps ca 10, each with 2 dorsal spines; seeds solitary."  (Fryxell, 1992)

subsp. tomentosum: Calyx spreading in fruit; dorsal cusps on mericarps ca 1 mm long.
subsp. pautense: Calyx inrolled in fruit; dorsal cusps on mericarps ca 0.5 mm long  (Fryxell, 1992; pp. 72-75).

Habitat/ecology:  "0-1800 m elevation (ssp.tomentosum), 2400-2700 m (ssp. pautense)" (Fryxell, 1992; pp. 72-75).

Propagation:  Seed

Native range:  Venezuela, Ecuador, Peru, Brazil (Fryxell, 1992; pp. 72-75).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Ecuador (Galápagos Islands)
Floreana Group
Floreana Island introduced
invasive
Charles Darwin Foundation (2008)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
South America (Pacific rim)
South America (Pacific rim)
Perú (Republic of) native
Fryxell, PLaul A. (1992) (p. 74)

Comments:  Probably not native to the Galápagos Islands, possibly introduced, per Charles Darwin Research Station.


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This page was created on 22 JUN 2004 and was last updated on 19 OCT 2006.