Comments ⁵

Fatoua villosa was first reported for North America from Louisiana by J. W. Thieret (1964). It has become widespread in the eastern and lower midwestern states where it often occurs as a weed in greenhouses and disturbed sites. Apparently it spreads from the distribution of horticultural materials.

Description ⁶

Herbs , to ca. 8 dm. Stems erect, branched, pubescent with hooked trichomes. Leaves: stipules linear to linear-lanceolate, 1.8-2.5 mm; petiole 1-6 cm, often ± as long as leaf blade. Leaf blade to 2.5-10 × 1-7 cm, papery, base cordate to truncate, margins crenate-dentate, apex acute to acuminate; surfaces abaxially and adaxially appressed-hirsute. Inflorescences cymes, dense, 4-8 mm wide, subtended by narrow bract; peduncle 1-2 cm. Flowers light green, staminate and pistillate in same cyme. Staminate flowers: calyx campanulate; stamens exserted. Pistillate flowers: calyx boat-shaped; ovary globose, puberulent, somewhat depressed in axis; style reddish purple, filiform. Achenes white, oval, 3-angled, ca. 1 mm, minutely muricate, with 2 triangular, membranous appendages. Seeds explosively expelled.

Sources and Credits

1. (c) Sam Kieschnick, some rights reserved (CC BY), uploaded by Sam Kieschnick
2. (c) Michael Becker, some rights reserved (CC BY-SA), https://upload.wikimedia.org/wikipedia/commons/c/c7/Fatoua_villosa_2007.07.15_14.37.23-p7150082.jpg
3. (c) Michael Becker, some rights reserved (CC BY-SA), https://upload.wikimedia.org/wikipedia/commons/b/b0/Fatoua_villosa_2007.07.15_14.38.19-p7150086.jpg
4. (c) Dalgial, some rights reserved (CC BY-SA), https://upload.wikimedia.org/wikipedia/commons/d/d7/%EB%BD%95%EB%AA%A8%EC%8B%9C%ED%92%80.JPG
5. (c) Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/19783547
6. (c) Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/4930771

More Info

• iNat taxon page
• Atlas of Living Australia
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• eFloras.org
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
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• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
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• Maryland Biodiversity Project
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• 植物和名−学名インデックス YList

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