Robert W. Freckmann Herbarium


  Scleranthus annuus L. subsp. annuus image
Photographer: Kitty Kohout           

Kurt Stüber
Family Caryophyllaceae
Scleranthus annuus L. subsp. annuus
annual knawel, German knotgrass
Scleranthus: from Greek scleros, "hard," and anthos, "flower," from the extremely hard hypanthium or calyx tube
annuus: Latin for "yearly" usually referring to a plant which lives only one season
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Introduced - naturalized
Plant: spreading annual, to 6" tall, bushy, wiry forb; stems with many forks
Flower: greenish, tiny, 5-parted, mostly stalkless, no petals, pointed sepals with thin whitish edges; inflorescence a tight, branched cluster; blooms June-Sept.
Leaf:opposite, growing together at the base, linear, pointed
Habitat: disturbed areas
(Glossary)

More Information Natural Communities Herbarium Specimens
All Scleranthus list Google- Images or Text

Flora of North America (off site)
Synonyms 
Scleranthus annuus L.

         
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