| 词条 | Dichondra |
| 释义 |
|image = Dichondra_micratha.jpg |image_caption = Dichondra micrantha |taxon = Dichondra |authority = J.R.Forst. & G.Forst.[1] |subdivision_ranks = Species |subdivision = See text |synonyms = Dichondropsis Brandegee[1] }} Dichondra is a small genus of flowering plants in the morning glory family, Convolvulaceae. They are prostrate, perennial, herbaceous plants, with creeping stems which take root readily at the leaf nodes. The flowers are white, greenish or yellowish, 2–3 mm diameter. The number of species is disputed, with some authors dividing the genus regionally into about ten separate species, while others accept only two species. Members of the genus are commonly known as ponysfoots[2] and are native to tropical and warm temperate regions around the world. The genus name is derived from the Greek words δίς (dis), meaning "two", and χόνδρος (chondros), meaning "grain". It refers to the fruits.[3] Selected species
Cultivation and usesSome Dichondra species are cultivated as ornamental plants, with cultivar selections also available. Dichondra micrantha is used as a groundcover. Dichondra argentea is a light silver leaved accent plant. The Dichondra argentea 'Silver Falls' cultivar is often used for trailing over the rims of potted plants, and has lower water needs.[10] Dichondra micrantha was very popular in Southern California in the 1950s and 1960s as a grass substitute for lawns. Each leaf consists of a stem with a nearly circular or kidney-shaped horizontal leaf top, between 8–25 mm in diameter with a 20–35 mm petiole. A healthy lawn consisting entirely of Dichondra is fairly difficult to start, grow, and maintain. Neighbors' Bermuda grass often seeded in, with Oxalis sp. and other weeds. In some habitats and landscapes of the United States, some of the non-native Dichondra species are treated as weeds. References1. ^1 {{cite web |url=http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?3610 |title=Genus: Dichondra J. R. Forst. & G. Forst. |work=Germplasm Resources Information Network |publisher=United States Department of Agriculture |date=2003-12-11 |accessdate=2012-04-30}} 2. ^1 {{ITIS |id=30833 |taxon=Dichondra |accessdate=2012-04-30}} 3. ^{{cite book |first=Thomas H. |last=Everett |title=The New York Botanical Garden Illustrated Encyclopedia of Horticulture |volume=4 |publisher=Courier Corporation |year=1981 |isbn=978-0-8240-7234-6 |page=1059}} 4. ^San Marcos Growers treatment: Dichondra argentea (silver dichondra) 5. ^Encyclopedia of Life: Information on Dichondra carolinensis (Carolina Ponysfoot, Grass Ponysfoot) 6. ^Jepson: Dichondra donelliana 7. ^Dichondra microcalyx {{es icon}} 8. ^Jepson: Dichondra occidentalis 9. ^{{cite web |url=http://www.ars-grin.gov/cgi-bin/npgs/html/splist.pl?3610 |title=GRIN Species Records of Dichondra |work=Germplasm Resources Information Network |publisher=United States Department of Agriculture |accessdate=2012-04-30}} 10. ^Missouri Botanical Garden horticultural treatment: Dichondra argentea 'Silver Falls'
External links{{Commons category}}
8 : Convolvulaceae|Convolvulaceae genera|Flora of Asia|Flora of the United States|Garden plants of Asia|Garden plants of North America|Groundcovers|Flora of North America |
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