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|Family: Malvaceae||View Description||Dichotomous Key|
|Genus: Abutilon||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Abutilon theophrasti Medik.
Habit: Annual, generally scented when bruised. Stem: erect, (5)10--20 dm, generally few-branched, glandular. Leaf: blade generally 10--20 cm wide, shallowly crenate, velvety, densely stellate-hairy to tomentose. Inflorescence: panicle or flowers 1 in leaf axils. Flower: calyx 6.5--10 mm, < fruit; petals 6--8(14) mm, yellow to orange. Fruit: segments > 10, 5--15-seeded, long-soft-hairy, beaks 3--5 mm, back-pointing. Chromosomes: 2n=42.
Ecology: Uncommon. Disturbed places; Elevation: generally < 100 m. Bioregional Distribution: NCoRI, GV (esp ScV), SCoRO, SW, D; Distribution Outside California: widespread worldwide; native to southern Asia. Flowering Time: Jul--Sep Note: Generally weedy; reported from 42 California cos. (Holt & Boose 2000 Weed Science 48:43--52); seeds long-lived.
Unabridged Note: In 25 of 33 cos. reported in 1991 by one study (UC survey; T. Lanini), historically or currently in 42 of 58 cos. in California by another (Holt, J.S. and A.B. Boose. 2000. Potential for spread of Abutilon theophrasti in California. Weed Science 48:43--52). Cos. where it has NOT been reported are: 12 mountain cos. (Del Norte, Siskiyou, Modoc, Lassen, Plumas, Sierra, Nevada, Placer, Alpine, Amador, Tuolumne, Mariposa cos.), along with Marin, San Francisco, Los Angeles, and Monterey cos. Also according to the 1991 study, currently most common in Colusa, Fresno, Riverside, and Yolo cos., and since 1980 reported as new in at least these cos.: Alameda, Colusa, Imperial, Inyo, Kern, Lake, San Benito, Shasta, and Ventura, in addition to those listed above known to be current.
eFlora Treatment Author: Paul A. Fryxell & Steven R. Hill
Jepson Online Interchange
Previous taxon: Abutilon parvulum
Next taxon: Alcea
Citation for this treatment: Paul A. Fryxell & Steven R. Hill 2016. Abutilon theophrasti, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=11605, accessed on August 29, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on August 29, 2016.