Malva neglecta

Wallroth in C. F. Hornschuch

in C. F. Hornschuch, Syll. Pl. Nov. 1: 140. 1824.

Common names: Common mallow cheeses mauve négligée
IntroducedWeedy
Treatment appears in FNA Volume 6. Treatment on page 290. Mentioned on page 287, 292.

Herbs, annual, biennial, or perennial, 0.2–0.6 m, trailing stems sometimes to 1 m, usually sparsely stellate-hairy and with simple hairs. Stems usually prostrate to ascending, sometimes trailing, sparsely stellate-hairy with simple hairs persistent on older stems. Leaves: stipules persistent, narrowly triangular, 3–6 × 2.5 mm, papery; petiole usually 2–5 times as long as blade, gradually reduced distally; blade reniform to orbiculate-cordate, unlobed or very shallowly 5–7-lobed, 1.5–3.5 (–6) × 1–4 (–5) cm, base cordate, margins crenate-dentate, apex obtuse or rounded, surfaces glabrous or sparsely stellate-hairy. Inflorescences axillary, 2–6-flowered fascicles, long-stalked. Pedicels 1–5 cm, usually 10+ mm in fruit, several times longer than calyx, slender and flexible in fruit; involucellar bractlets distinct, not adnate to calyx, linear to narrowly oblong-lanceolate, 3–5 (–6) × 1 mm, shorter than calyx, margins entire, surfaces sparsely stellate-puberulent and short-ciliate. Flowers: calyx 4–7 mm, slightly accrescent, to 8 mm in fruit, lobes enclosing mericarps, not veined, triangular-ovate, stellate-hairy, ciliate; petals pale lilac to whitish, drying pinkish or whitish, or faded, veins not darker, (6–) 9–13 mm, length 2 times calyx, apex notched; staminal column 4–4.5 mm, retrorsely stellate-puberulent; style 12–15-branched; stigmas 12–15 (same number as locules), purple. Schizocarps 6 mm diam.; mericarps 12–15, 1.5–2 mm, apical face and margins rounded-angled, not winged or toothed, sides thin and papery, smooth to slightly roughened or reticulate, surfaces puberulent apically. Seeds 1–1.5 mm. 2n = 42.


Phenology: Flowering Apr–Oct.
Habitat: Disturbed areas, vacant lots, farm yards
Elevation: 0–2700 m

Distribution

V6 527-distribution-map.jpg

Introduced; Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.S., N.W.T., Ont., P.E.I., Que., Sask., Ala., Alaska, Ariz., Ark., Calif., Colo., Conn., Del., D.C., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Europe, Asia, also in Mexico (Chihuahua), West Indies (Dominican Republic), Central America (Panama), South America (Argentina), South America (Brazil), s Asia (India), s Asia (Pakistan), Africa, Pacific Islands (New Zealand), Australia

Discussion

Malva neglecta is the most commonly found mallow in most of North America. It has been introduced essentially worldwide in temperate areas and is usually considered a weed. In some older treatments, it was included within M. rotundifolia Linnaeus, a name rejected because of its inconsistent use for this species as well as for M. pusilla and other species. The immature, mucilaginous fruits are sometimes eaten; they have the appearance and texture of an old-fashioned wheel of cheese, hence one of the common names.

Selected References

None.

Lower Taxa

None.

"broad" is not a number."-5timesaslongasblade" is not declared as a valid unit of measurement for this property."thin" is not a number."timescalyx" is not declared as a valid unit of measurement for this property.

... more about "Malva neglecta"
indehiscent +
notched;rounded;obtuse +
toothed +  and rounded-angled +
toothed +  and rounded-angled +
Steven R. Hill +
Wallroth in C. F. Hornschuch +
cordate +
asymmetric +  and symmetric +
3.5 cm35 mm <br />0.035 m <br /> (6 cm60 mm <br />0.06 m <br />) +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
5-7-lobed +, unlobed +, reniform +  and orbiculate-cordate +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
not adnate +  and distinct +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
hairy +  and glabrous +
linear +  and narrowly oblong-lanceolate +
1 cm10 mm <br />0.01 m <br /> (?) +
accrescent +
0 cm0 mm <br />0 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
indehiscent +  and loculicidal +
Common mallow +, cheeses +  and mauve négligée +
Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.S. +, N.W.T. +, Ont. +, P.E.I. +, Que. +, Sask. +, Ala. +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +, Europe +, Asia +, also in Mexico (Chihuahua) +, West Indies (Dominican Republic) +, Central America (Panama) +, South America (Argentina) +, South America (Brazil) +, s Asia (India) +, s Asia (Pakistan) +, Africa +, Pacific Islands (New Zealand) +  and Australia +
0–2700 m +
sparse;copious +
pistillate +  and staminate +
unisexual +  and bisexual +
Disturbed areas, vacant lots, farm yards +
persistent +
long-stalked +  and 2-6-flowered +
tough-fibrous +
connate +  and distinct +
simple +, stipulate +, sessile +, subsessile +  and petiolate +
distichous +  and alternate +
stellate-hairy +
triangular-ovate +
entire +  and crenate-dentate +
crenate;dentate +
brown +, tan +  and drying +
oblong +  and reniform +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
3-40-carpellate +
(1-)2-many +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
pale lilac;whitish drying pinkish or whitish +
adnate +  and distinct +
Flowering Apr–Oct. +
in C. F. Hornschuch, Syll. Pl. Nov. +
adherent +
notched +  and reniform-rounded +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.15 cm1.5 mm <br />0.0015 m <br /> (?) +
persistent +
smooth;slightly roughened or reticulate +
Introduced +  and Weedy +
sessile +  and subsessile +
stellate-puberulent +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
trailing;usually prostrate;ascending +
stellate-hairy +
0 cm0 mm <br />0 m <br /> (100 cm1,000 mm <br />1 m <br />) +
12 +  and 15 +
filiform +, linear +  and capitate +
1-2 times number of carpels +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
triangular +
2.5 cm25 mm <br />0.025 m <br /> (?) +
12-15-branched +
puberulent +, stellate-puberulent +, stellate-hairy +  and glabrous +
Axolopha +, Bismalva +  and Saviniona +
Malva neglecta +
species +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
not darker +
0.9 cm9 mm <br />0.009 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
perennial +, biennial +  and annual +
hairy +  and glabrous +
monoecious +, dioecious +  and hermaphroditic +