Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Scleranthus annuus ssp. annuus
FAMILY
Caryophyllaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Knawel at Vascular Plants of North Carolina.
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Scleranthus annuus
FAMILY
Caryophyllaceae
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 5 (2005)
Scleranthus annuus ssp. annuus
INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 071-01-001:
Scleranthus annuus FAMILY Caryophyllaceae
INCLUDED WITHIN Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Scleranthus annuus
COMMON NAME:
Knawel, Annual Knawel, Knotgrass
To see larger pictures, click or hover over the thumbnails.
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USDA / Selected Weeds of the US. 1970 swus_page_163a
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USDA / Selected Weeds of the US. 1970 swus_page_163b
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Keith Bradley kab_s_annuus_0369
February Lexington County SC
Cymes congested, flowers numerous. Calyx tube coarsely ribbed, hardened, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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JK Marlow jkm200505_4610
May Spartanburg County SC
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JK Marlow jkm200505_4618
May Spartanburg County SC
Prostrate, much-branched annual with a taproot. Leaves linear or subulate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Scleranthus annuus ssp. annuus
FAMILY
Caryophyllaceae
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Scleranthus annuus
FAMILY
Caryophyllaceae
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 5
Scleranthus annuus ssp. annuus
INCLUDED WITHIN
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 071-01-001:
Scleranthus annuus
FAMILY
Caryophyllaceae
INCLUDED WITHIN
Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Scleranthus annuus
3502
Forb
Annual
Habitat: Fields, ditches, roadsides, other disturbed areas, per Weakley's Flora
Non-native: Mediterranean Europe, northern Africa, western Asia
Common (uncommon in GA, uncommon in Mountains)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
LEAVES:
Simple
Opposite
Leaves sessile
Margins entire
Leaves do not have stipules.
FLOWER:
Spring/Summer/Fall
5-lobed calyx
Petals absent
5-10 stamens, usually
Superior ovary
Inflorescence a cyme
FRUIT:
Spring/Summer/Fall
Utricle
TO LEARN MORE about this plant, look it up in a good book!
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".