Amphicarpum Kunth. Subfamily: Panicoideae. Tribe: Paniceae. Subtribe: Boivinellinae. supertribe: Panicodae. clade: "PACMAD". Common name: Peanut-grass.
The genus consists only of the two species treated here, remarkable for their dimorphic spikelets, some of them cleistogamous and subterranean, others aerial and chasmogamous. A series of publications over the past century make Amphicarpum one of the best studied “useless” grasses anywhere (Holm 1896; Weatherwax 1934; Gray & Fairbrothers 1971; McNamara & Quinn 1977; Cheplick & Quinn 1982, 1983, 1986, 1987, 1988a, 1988b; Cheplick 1989; et seq.).
References: Cheplick (1988); Cheplick (1989); Cheplick & Quinn (1982); Cheplick & Quinn (1983); Cheplick & Quinn (1986); Cheplick & Quinn (1987); Cheplick & Quinn (1988a); Cheplick & Quinn (1988b); Wipff (2003g) In Flora of North America Editorial Committee (2003a). Show full citations.
Hover over a shape, letter, icon, or arrow on the map for definition or see the legend. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.
© Keith Bradley | Amphicarpum muehlenbergianum | Original Image ⭷
© Douglas Goldman, some rights reserved (CC BY-SA), uploaded by Douglas Goldman | Amphicarpum amphicarpon source | Original Image ⭷
© Douglas Goldman, some rights reserved (CC BY-SA), uploaded by Douglas Goldman | Amphicarpum amphicarpon source | Original Image ⭷
© Scott Ward | Amphicarpum muehlenbergianum | Original Image ⭷
© Douglas Goldman, some rights reserved (CC BY-SA), uploaded by Douglas Goldman | Amphicarpum amphicarpon source | Original Image ⭷Feedback
See something missing or incorrect about Amphicarpum? Let us know here:
- Please include your name and if possible, email in case when need to clarify what you wrote.
- If you opt out of including email, please be as specific as possible (e.g., which photo is incorrect?)
- Please do not submit questions asking to identify plants or about horticultural topics (e.g., how do I control an invasive plant in my garden?). Instead, those questions can be submitted here for the Carolinas region only.
- Please do not send us feedback about unkeyed species as this work is ongoing.
- Please allow time for flora edits to show in our next data release. We greatly appreciate your feedback but may require extra time to research complicated taxonomic issues.