Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Gentianales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Hexasepalum teres
FAMILY
Rubiaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
This species has long been included in the "buttonweed" genus of Diodia. Read more at Vascular Plants of North Carolina.
(?)
PLANTS NATIONAL DATABASE:
Diodia teres
FAMILY
Rubiaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Hexasepalum teres
INCLUDING Floristic Synthesis of North America (Kartesz, 1999)
Diodia teres var. hirsutior
INCLUDING Floristic Synthesis of North America (Kartesz, 1999)
Diodia teres var. hystricina
INCLUDING Floristic Synthesis of North America (Kartesz, 1999)
Diodia teres var. oblongifolia
INCLUDING Floristic Synthesis of North America (Kartesz, 1999)
Diodia teres var. teres
SYNONYMOUS WITH Revisión de las especies americanas del género Diodia (Bacigalupo & Cabral, 1999)
Diodella teres
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 173-03-002:
Diodia teres FAMILY Rubiaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Diodella teres
COMMON NAME:
Poor-joe, Rough Buttonweed
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_dite2_001_lvd
)
USDA / Selected Weeds of the US. 1970 swus_page_351
)
JK Marlow jkm190618_9254
June Greenville County SC
Tall Pines Wildlife Management Area
)
JK Marlow jkm090716_044
July Georgetown County SC
Huntington Beach State Park
)
JK Marlow jkm190708_9817
July Greenville County SC
)
JK Marlow jkm190708_9820
July Greenville County SC
)
JK Marlow jkm190722_0101
July Greenville County SC
)
JK Marlow jkm0508g_16
August Greenville County SC
Field
Leaves stiff with bristles at their base, per Newcomb's Wildflower Guide (Newcomb, 1977).
)
JK Marlow jkm0508g_18
August Greenville County SC
Field
Weedy often-branched annual with prostrate, spreading or ascending stems, per Wildflowers of Tennessee (Carman, 2005).
)
Richard and Teresa Ware rtw_d_teres_poorjoe_2_s
August
The 4 stamens are attached to the corolla tube, and the stigma is 2-lobed, per Guide to the Plants of Granite Outcrops (Murdy & Carter, 2000).
)
JK Marlow jkm0509d_22
September Greenville County SC
Field
The petals are fused to form a tubular 4-lobed corolla, per Guide to the Plants of Granite Outcrops (Murdy & Carter, 2000).
)
JK Marlow jkm160907_057b
September Greenville County SC
)
JK Marlow jkm180903_4461
September Greenville County SC
Tall Pines Wildlife Management Area
Stipules to 0.4" long have a short sheath and 5-8 bristles, per Wildflowers of Tennessee (Carman, 2005).
)
Roxanna Martin rlm91910_184
September Spartanburg County SC
Fruit capsule somewhat roundish, hairy, & topped by 4 persistent sepals, per Wildflowers of Tennessee (Carman, 2005).
)
Roxanna Martin rlm9410_292
September Spartanburg County SC
Pinkish funnelform flowers are 4-lobed, sessile, & borne in leaf axils, per Wildflowers of Tennessee (Carman, 2005).
)
JK Marlow s050910_d
September Greenville County SC
Field
Stem often reddish-purple with lines of hairs, per Weeds of Southern Turfgrasses (Murphy et al., 1992).
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Hexasepalum teres
FAMILY
Rubiaceae
(?)
PLANTS NATIONAL DATABASE:
Diodia teres
FAMILY
Rubiaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Hexasepalum teres
INCLUDING
Floristic Synthesis of North America (Kartesz, 1999)
Diodia teres var. hirsutior
INCLUDING
Floristic Synthesis of North America (Kartesz, 1999)
Diodia teres var. hystricina
INCLUDING
Floristic Synthesis of North America (Kartesz, 1999)
Diodia teres var. oblongifolia
INCLUDING
Floristic Synthesis of North America (Kartesz, 1999)
Diodia teres var. teres
SYNONYMOUS WITH
Revisión de las especies americanas del género Diodia (Bacigalupo & Cabral, 1999)
Diodella teres
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 173-03-002:
Diodia teres
FAMILY
Rubiaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Diodella teres
469
Forb
Annual
Habitat: dunes, sandy roadsides, glades, hardpans, other dry habitats, per Weakley's Flora
Native to the Carolinas & Georgia
Common
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Opposite
Margins entire
FLOWER:
Summer/Fall
Lavender-pink to white
Radially symmetrical
4-merous
4-lobed calyx
4-lobed salverform corolla
4 stamens
Bisexual
FRUIT:
Summer/Fall
TO LEARN MORE about this plant, look it up in a good book!
- Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005) p056
- Newcomb's Wildflower Guide (Newcomb, 1977) p158
- Guide to the Plants of Granite Outcrops (Murdy & Carter, 2000) p61
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p104
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p099
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p317
- Wildflowers of Tennessee (Carman, 2005) p260
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p303
- Wildflowers of the Southern Mountains (Smith, 1998) p166
- Wildflowers of the Sandhills Region (Sorrie, 2011) p333
- Weeds of Southern Turfgrasses (Murphy et al., 1992) p174
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