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)
Ecuador (Galápagos Islands)
Santa Cruz Group
Santa Cruz 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
Ecuador (Mainland)
Ecuador
Ecuador (Republic of) (continental) native
Fryxell, PLaul A. (1992) (pp. 72-75)
Perú
Perú
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.