OF THE CAROLINAS & GEORGIA

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


(?) PLANTS NATIONAL DATABASE:
Diodia teres   FAMILY Rubiaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Hexasepalum teres

SYNONYMOUS WITH Revisión de las especies americanas del género Diodia (Bacigalupo & Cabral, 1999)
Diodella teres

INCLUDING Synthesis of the North American Flora (Kartesz, 1999)
Diodia teres var. hirsutior

INCLUDING Synthesis of the North American Flora (Kartesz, 1999)
Diodia teres var. hystricina

INCLUDING Synthesis of the North American Flora (Kartesz, 1999)
Diodia teres var. oblongifolia

INCLUDING Synthesis of the North American Flora (Kartesz, 1999)
Diodia teres var. 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.

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

JK Marlow    jkm190618_9254

June    Greenville County    SC

Tall Pines Wildlife Management Area

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

JK Marlow    jkm090716_044

July    Georgetown County    SC

Huntington Beach State Park

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

JK Marlow    jkm190708_9817

July    Greenville County    SC

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

JK Marlow    jkm190708_9820

July    Greenville County    SC

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

JK Marlow    jkm190722_0101

July    Greenville County    SC

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

JK Marlow    jkm0508g_16

August    Greenville County    SC

Field

Leaves stiff with bristles at their base, per Newcomb's Wildflower Guide.

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

JK Marlow    jkm0508g_18

August    Greenville County    SC

Field

Weedy often-branched annual with prostrate, spreading or ascending stems, per Wildflowers of Tennessee.

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

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.

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

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.

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

JK Marlow    jkm160907_057b

September    Greenville County    SC

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

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.

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

Roxanna Martin    rlm91910_184

September    Spartanburg County    SC

Fruit capsule somewhat roundish, hairy, & topped by 4 persistent sepals, per Wildflowers of Tennessee.

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

Roxanna Martin    rlm9410_292

September    Spartanburg County    SC

Pinkish funnelform flowers are 4-lobed, sessile, & borne in leaf axils, per Wildflowers of Tennessee.

image of Hexasepalum teres, Poor-joe, Rough Buttonweed

JK Marlow    s050910_d

September    Greenville County    SC

Field

Stem often reddish-purple with lines of hairs, per Weeds of Southern Turfgrasses.

 

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

SYNONYMOUS WITH Revisión de las especies americanas del género Diodia (Bacigalupo & Cabral, 1999)
Diodella teres

INCLUDING Synthesis of the North American Flora (Kartesz, 1999)
Diodia teres var. hirsutior

INCLUDING Synthesis of the North American Flora (Kartesz, 1999)
Diodia teres var. hystricina

INCLUDING Synthesis of the North American Flora (Kartesz, 1999)
Diodia teres var. oblongifolia

INCLUDING Synthesis of the North American Flora (Kartesz, 1999)
Diodia teres var. 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

 

Find by SCIENTIFIC NAME:

469

Forb
Annual

Native to the Carolinas & Georgia

Common

Habitat: dunes, sandy roadsides, glades, hardpans, other dry habitats, per Weakley's Flora

map
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
Margins entire

FLOWER:
Summer/Fall
Lavender-pink to white
Bisexual
Radially symmetrical
4-merous
4-lobed calyx
4-lobed salverform corolla
4 stamens

FRUIT:
Summer/Fall

 

TO LEARN MORE about this plant, look it up in a good book!



 


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