Poorjoe in Anne Arundel Co., Maryland (7/9/2011).

View Record Details Photo by Bill Harms MBP List

Poorjoe blooming in Worcester Co., Maryland (9/13/2013).

View Record Details Photo by Jim Brighton MBP List

Poorjoe in Anne Arundel Co., Maryland (7/31/2010).

View Record Details Photo by Bill Harms MBP List

Poorjoe blooming along a gravel road in Prince George's Co., Maryland (8/26/2012). This stretch of road has hosted Dainty Sulphur, a recent addition to the state butterfly list.

View Record Details Photo by Bill Hubick MBP List

Poorjoe in Montgomery Co., Maryland (8/30/2016).

View Record Details Photo by Elizabeth Miller MBP List

Poorjoe blooming in Wicomico Co., Maryland (9/15/2013).

View Record Details Photo by Jim Brighton MBP List

Poorjoe beginning to emerge in Anne Arundel Co., Maryland (6/26/2016).

View Record Details Photo by Bill Hubick MBP List

Poorjoe blooming in Howard Co., Maryland (7/27/2015).

View Record Details Photo by Jim Wilkinson MBP List

Poorjoe blooming in Baltimore Co., Maryland (8/8/1981).

View Record Details Photo by Jim Stasz MBP List

Poorjoe in Dorchester Co., Maryland (6/23/2015).

View Record Details Photo by Jim Brighton MBP List

Poorjoe in Howard Co., Maryland (10/23/2019). Collected and processed by Helen Lowe Metzman.

View Record Details Photo by USGS PWRC MBP List

Poorjoe in Howard Co., Maryland (10/23/2019). Collected and processed by Helen Lowe Metzman.

View Record Details Photo by USGS PWRC MBP List

Poorjoe in Howard Co., Maryland (10/23/2019). Collected and processed by Helen Lowe Metzman.

View Record Details Photo by USGS PWRC MBP List

Map Snapshot

219 Records

GA AL WA FR CL MO HO BA BC HA CE PG AA CV CH SM KE QA CN TA DO WI SO WO

Relationships

Host plant for Tersa Sphinx Moth (Database of World's Lepidopteran Host Plants).

Seasonality Snapshot

Resources

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Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

Poorjoe in Anne Arundel Co., Maryland (7/9/2011). View Record Details Media by Bill Harms.

Poorjoe blooming in Worcester Co., Maryland (9/13/2013). View Record Details Media by Jim Brighton.

Poorjoe in Anne Arundel Co., Maryland (7/31/2010). View Record Details Media by Bill Harms.

Poorjoe blooming along a gravel road in Prince George's Co., Maryland (8/26/2012). This stretch of road has hosted Dainty Sulphur, a recent addition to the state butterfly list. View Record Details Media by Bill Hubick.

Poorjoe in Montgomery Co., Maryland (8/30/2016). View Record Details Media by Elizabeth Miller.

Poorjoe blooming in Wicomico Co., Maryland (9/15/2013). View Record Details Media by Jim Brighton.

Poorjoe beginning to emerge in Anne Arundel Co., Maryland (6/26/2016). View Record Details Media by Bill Hubick.

Poorjoe blooming in Howard Co., Maryland (7/27/2015). View Record Details Media by Jim Wilkinson.

Poorjoe blooming in Baltimore Co., Maryland (8/8/1981). View Record Details Media by Jim Stasz.

Poorjoe in Dorchester Co., Maryland (6/23/2015). View Record Details Media by Jim Brighton.

Poorjoe in Howard Co., Maryland (10/23/2019). Collected and processed by Helen Lowe Metzman. View Record Details Media by USGS PWRC.

Source: Wikipedia

Hexasepalum teres

Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Gentianales
Family:	Rubiaceae
Genus:	Hexasepalum
Species:	H. teres
Binomial name
*Hexasepalum teres* (Walter) J.H.Kirkbr.
Synonyms
List Borreria shandongensis F.Z.Li & X.D.Chen Diodella teres (Walter) Small Diodia incana Aresch. Diodia procumbens Sw. ex DC. Diodia prostrata Sw. Diodia teres Walter Endopogon pumilum Raf. Spermacoce diodina Michx. Spermacoce holmiana Schult. ex Steud. Spermacoce shandongensis (F.Z.Li & X.D.Chen) Govaerts

Hexasepalum teres is a species of flowering plant in the coffee family known by the common names poorjoe and rough buttonweed.^{[citation needed]} This annual plant is native to Mexico, Central America, South America, the West Indies and the United States from California to Florida and from Kansas to Massachusetts.^[1] The species is also naturalized in the Netherlands, the Canary Islands, Western Africa, Angola, China, Japan and Korea,^[2] India, and Madagascar.^[3]

Hexasepalum teres has a thin, erect or prostrate stem rarely up to 65 cm (26 in) in height. It has opposite leaves which are stiff, dark green, elliptical, pointed, and roughly-textured, up to 3 cm (1.2 in) long. Each pair of leaves cradles a flower at its base. The small white to pinkish-purple flower has four stiff petal-like lobes up to 12 mm (0.47 in) long and 10 mm (0.39 in) wide. The fruit is ellipsoid, splitting into two nutlets This plant is most common in sandy areas such as desert dunes and river floodplains.^[2]^[4]

References

[edit]

^ USDA Plants Database
^ ^a ^b "Yi-Ding Gao, Rui-Jiang Wang & Ching-I Peng. 2010. Diodia teres Walt. (Rubiaceae), a Newly Recorded Weed in Fujian. Taiwania 55 (2): 177-179" (PDF). Archived from the original (PDF) on 2014-05-04. Retrieved 2014-05-03.
^ Invasive Species Compendium, Diodella teres
^ Small, John Kunkel & Carter, Joel Jackson. 1913. Flora of Lancaster County (Pennsylvania) 271.