Abutilon theophrasti

Medikus

Malvenfam., 28. 1787

Common names: Butterprint China jute chingma Indian hemp pie-marker velvetleaf
IntroducedWeedy
Basionyms: Sida abutilon Linnaeus
Treatment appears in FNA Volume 6. Treatment on page 226. Mentioned on page 222, 227.
Herbs, annual, to 1+ m. Stems erect, stellate-tomentose, without simple hairs. Leaves: stipules lanceolate; petiole subequal to blade; blade concolorous, broadly ovate to suborbiculate, 8–15 cm, ± as long as wide, base cordate, margins crenulate, apex acuminate, surfaces softly pubescent. Inflorescences usually solitary flowers, sometimes cymose or racemose. Flowers: calyx 10 mm, lobes not overlapping, erect in fruit, ovate; corolla pale yellow throughout, petals 8–13 mm; staminal column glabrous; style 13–15-branched. Schizocarps broadly ovoid, 15 × 20 mm; mericarps: apex spinose, spines divergent, 3–6 mm, hirsute. Seeds 3 per mericarp, 3–4 mm, minutely puberulent. 2n = 84.

Phenology: Flowering summer–fall.
Habitat: Soybean, corn, and cotton fields, naturalized in disturbed sites
Elevation: 0–1400 m

Distribution

V6 403-distribution-map.jpg

Ont., Ala., Ariz., Ark., Calif., Colo., Conn., Del., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., 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.

Discussion

The history of the introduction of Abutilon theophrasti to North America was recounted by N. R. Spencer (1984). It can be abundant locally, thriving when rich cultivated soils are disturbed, especially in the midwestern region. Interference with crops has been extensive.

References

None.

Lower Taxa

No lower taxa listed.