Althaea cannabina

Linnaeus

Sp. Pl. 2: 686. 1753.

Common names: Hemp-leaved marshmallow
Introduced
Synonyms: Althaea kotschyi Boissier A. narbonnensis Pourret ex Cavanilles
Treatment appears in FNA Volume 6. Treatment on page 232. Mentioned on page 231.

Herbs perennial, (0.5–) 1–2 m. Stems erect, clumped, branched distally, canescent, hairs stellate. Leaves: stipules mostly persistent, narrowly linear, simple or 3-fid, 2–8 mm; petiole as long as blade in proximal leaves, greatly reduced in distal leaves; blades of proximal leaves deltate-ovate, 3–5-palmately lobed or divided ± to base, 3–12 × 2–16 cm, lobes oblong to lanceolate, middle lobe longest, margins deeply dentate to serrate, surfaces stellate-hairy, blades of upper leaves similar but narrower, 3–5-palmately lobed or divided, 1–4.5 × 0.5–6 cm, base cuneate, margins serrate, apex acuminate. Inflorescences solitary flowers, usually long-pedunculate (1–15 cm) or peduncle 2–3-flowered apically; bracts 2, linear, 2 mm. Pedicels 0.5–16 cm; involucellar bractlets 7–9, erect, lanceolate, 3–7 mm, slightly accrescent, 1/2+ as long as calyx, stellate-tomentose. Flowers: calyx 5–7 (–10) mm, lobes ovate, 2 times as long as tube, margins entire, apex obtuse, acuminate, or apiculate, stellate-tomentose; petals pink to pink-purple, 10–23 × 5–12 mm, 2 times as long as calyx, apex obtuse or notched; staminal column 0.5–6 mm, glabrous or sparsely clavate-hairy; anthers in upper 1/2, purplish to purplish brown; stigmas 12–16. Fruits somewhat longer than calyx and not concealed, 7 mm diam.; mericarps 12–16, brown, unwinged, reniform, 2.5–4 × 2–3.5 mm, striate with ribs radiating from rugose central area, back herringbone-veined, glabrous. Seeds brown, reniform, 3 mm, glabrous. 2n = 84.


Phenology: Flowering summer.
Habitat: Disturbed, usually moist areas
Elevation: 0–200 m

Distribution

V6 414-distribution-map.jpg

Introduced; D.C., Europe, Asia (nw Iran), Asia (s Russia), Asia (Turkey), Asia (Turkistan), widespread

Discussion

Althaea cannabina is occasionally cultivated as an ornamental, and rarely escapes or naturalizes.

Selected References

None.

Lower Taxa

None.

"timesaslongastube" is not declared as a valid unit of measurement for this property.No values specified.

... more about "Althaea cannabina"
unwinged +  and schizocarpic +
indehiscent +
glabrous +  and stellate-pilose-hairy +
reniform +  and orbicular rounded +
purplish +  and purplish brown +
stellate-tomentose +
Steven R. Hill +
Linnaeus +
cuneate +
1 cm10 mm <br />0.01 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
divided +, lobed +  and deltate-ovate +
0.5cm;6cm +
stellate-tomentose +
lanceolate +
accrescent +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
5-lobed +, campanulate +  and not inflated +
accrescent +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
indehiscent +  and loculicidal +
Hemp-leaved marshmallow +
pink +  and lilac-purple or bluish +
D.C. +, Europe +, Asia (nw Iran) +, Asia (s Russia) +, Asia (Turkey) +, Asia (Turkistan) +  and widespread +
0–200 m +
sparse;copious +
pistillate +  and staminate +
unisexual +  and bisexual +
somewhat longer +
not concealed +
Disturbed, usually moist areas +
not viscid +
tough-fibrous +
connate +  and distinct +
simple +, stipulate +, sessile +, subsessile +  and petiolate +
distichous +  and alternate +
connate +
ovate +, oblong +  and lanceolate +
entire +, serrate +  and deeply dentate +
herringbone-veined +  and unwinged +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
3-40-carpellate +
(1-)2-many +
0.5 cm5 mm <br />0.005 m <br /> (16 cm160 mm <br />0.16 m <br />) +
adnate +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 1.2 cm12 mm <br />0.012 m <br /> (?) +
Flowering summer. +
rugulose +
reniform +
persistent +
Introduced +
sessile +  and subsessile +
clavate-hairy +  and glabrous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
12 +  and 16 +
filiform +, linear +  and capitate +
1-2 times number of carpels +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
unbranched +  and branched +
stellate-hairy +
Althaea kotschyi +  and A. narbonnensis +
Althaea cannabina +
species +
monoecious +, dioecious +  and hermaphroditic +