font settings and languages

Font Size: Large | Normal | Small
Font Face: Verdana | Geneva | Georgia
Languages:

Fatoua villosa

(Hairy Crabweed)

Overview

[ Back to top ]

Interesting Facts

[ Back to top ]
 

Common Names

[ Back to top ]

Click on the language to view common names.

Common Names in Chinese:

Shui She Ma

Common Names in English:

Hairy Crabweed, Mulberry-Weed

Description

[ Back to top ]

Family Moraceae

Trees , shrubs , vines , or rarely herbs, frequently with milky or watery latex, sometimes spiny . Stipules present, frequently caducous . Leaves alternate, rarely opposite; petiole often present and well-defined; leaf blade simple , sometimes with cystoliths , margin entire or palmately lobed , venation pinnate or palmate. Inflorescences axillary , frequently paired , racemose, spicate , capitate, or rarely cymose , sometimes a fig or syconium with flowers completely enclosed within a hollow receptacle. Flowers unisexual (plants monoecious or dioecious), small to very small. Calyx lobes (1 or) 2-4(-8), free or connate , imbricate or valvate . Corolla absent. Male flowers: stamens as many as and opposite to calyx lobes (except in Artocarpus), straight or inflexed in bud; anthers 1- or 2-loculed, crescent-shaped to top-shaped; pistillode (rudimentary sterile pistil) often present. Female flowers: calyx lobes usually 4; ovary superior, semi-inferior, or inferior, 1(or 2) -loculed; ovules 1 per locule, anatropous or campylotropous; style branches 1 or 2; stigmas usually filiform . Fruit usually a drupe, rarely an achene, enveloped by an enlarged calyx and/or immersed in a fleshy receptacle, often joined into a syncarp. Seed solitary; endosperm present or absent.

Between 37 and 43 genera and 1100–1400 species: widespread in tropical and subtropical areas, less common in temperate areas; nine genera and 144 species (26 endemic, five introduced ) in China.

Economically, the most important species are those of Morus and Maclura associated with the production of silk . Some species in Broussonetia, Maclura, and Morus are important for paper making; some species in Artocarpus, Ficus, and Morus have edible fruit; and some species of Artocarpus and Broussonetia are used for furniture or timber.[1]

Genus Fatoua

Herbs, annual , caulescent , taprooted; sap not milky . Leaves alternate; stipules caducous , free . Leaf blade broadly ovate , margins toothed ; venation nearly palmate. Inflorescences axillary , capitate cymes, short-pedunculate, bracteate . Flowers: staminate and pistillate on same plants . Staminate flowers : calyx 4-lobed; stamens 4, inflexed . Pistillate flowers: calyx green, 4-lobed, pubescent ; ovary superior, oblique , 1-locular; style unbranched, nearly lateral . Syncarps globose ; each achene surrounded by its enlarged, persistent calyx.

Species 2: North America, tropical e Asia, Africa (Madagascar), Australia.[2]

Physical Description

Species Fatoua villosa

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. [source]

Habit: Forb/herb

Flowers: Bloom Period: May, June, July, August, September, October. • Flower Color: inconspicuous, near white, none, white

Habitat

Disturbed sites; 0-300 m ; introduced [3].

Typically found at an altitude of 0 to 418 meters (0 to 1,371 feet).[4]

Biology

[ Back to top ]

Reproduction

Duration: Annual

Growth

Temperature: Cold Hardiness: 7a, 7b, 8a. (map)

Taxonomy

[ Back to top ]

Synonyms

Urtica villosa Thunberg

Notes

Publishing author : Nakai Publication : Bot. Mag. (Tokyo) 1927, xli. 516

Name Status: Accepted Name .

Last scrutiny: 15-Mar-2000

Similar Species

[ Back to top ]

Members of the genus Fatoua

ZipcodeZoo has pages for 1 species, subspecies, varieties, forms, and cultivars in this genus:

F. villosa (Hairy Crabweed)

More Info

[ Back to top ]

Further Reading

[ Back to top ]

Notes

[ Back to top ]

Contributors

Data Sources

Accessed through GBIF Data Portal November 14, 2007:

Identifiers

Footnotes

  1. Zhengyi Wu, Zhe-Kun Zhou & Michael G. Gilbert "Moraceae". in Flora of China Vol. 5 Page 21. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. "Fatoua". in Flora of North America Vol. 3. Oxford University Press. Online at EFloras.org. [back]
  3. "Fatoua villosa". in Flora of North America Vol. 3. Oxford University Press. Online at EFloras.org. [back]
  4. Mean = 23.290 meters (76.411 feet), Standard Deviation = 374.010 based on 76 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/15/2012