Support the Flora of the Southeastern US
2024 has been a banner year for making the best flora we can imagine. We've created:
- Keys with embedded images of diagnostic features
- Clickable glossary terms with illustrated definitions
- FloraQuest: Carolinas & Georgia mobile app
- Heliophily and Wetland Statuses
- Direct links to Flora of North America
- 17,730 new high quality diagnostic photos and counting
With financial support from people like you, we are aiming even higher in 2025. Together we can accomplish all this: Vote on our 2025 priorities
- Add Global Conservation Ranks (GRanks) vote
- Professional graphic keys (polyclaves) to individual families/genera vote
- 2 new FloraQuest apps: Florida & Mid-South vote
- Image overlays highlighting diagnostic characters with arrows vote
- iNaturalist integration in FloraQuest vote
We've set a goal of recruiting 200 ongoing supporters to donate $15 or more each month in 2025. Please help us reach this goal and make next year's flora even better:
| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Euphorbiaceae | Croton alabamensis var. alabamensis | Alabama Croton | Dry to mesic limestone and dolostone glades, woodlands, and wooded ravines. | Endemic to scattered populations in c. AL; alleged populations in sc. TN (Chester, Wofford, & Kral 1997) are apparently based on mislabeled specimens (Wurdack 2006). |  |
| Euphorbiaceae | Croton alabamensis var. texensis | Texabama Croton | Limestone canyon slopes. | Endemic to ec. TX (Bell, Coryell, and Travis counties). | |
| Euphorbiaceae | Croton argenteus | Loamy soils of the Rio Grande Valley. | Native of West Indies, Central America, and South America. | ||
| Euphorbiaceae | Croton argyranthemus | Silver Croton, Sandhill Croton, Healing Croton | Longleaf pine sandhills, other dry sands. | C. GA and s. AL south to c. peninsular FL; w. LA and sw OK south through e. and c. TX to NLE and TAM. |  |
| Euphorbiaceae | Croton berlandieri | Salvia, Pepperbush | Brush. | S. TX south to ne. Mexico. | |
| Euphorbiaceae | Croton bonplandianus | Chrome ore piles. | Native of South America. Reported for chrome ore piles at Newport News, VA and Canton, MD (Reed 1964) |  | |
| Euphorbiaceae | Croton capitatus | Woolly Croton, Hogwort, Capitate Croton, Goatweed | Glades, prairies, woodlands, fields, disturbed areas. | Native of sc. United States, the exact limits of the original native distribution unclear, perhaps something like IL west to NE, south to AL, TX, and TAM. |  |
| Euphorbiaceae | Croton ciliatoglandulifer | Mexican Croton | Brush. | S. TX, s. AZ south to se. Mexico. | |
| Euphorbiaceae | Croton cortesianus | Cortez's Croton, Palillo | Thickets. | S. TX south to se. Mexico. | |
| Euphorbiaceae | Croton coryi | Cory's Croton | Dunes, grasslands, woodland openings, in loose sands. | Endemic to s. TX. | |
| Euphorbiaceae | Croton dioicus | Grassland Croton, Rosval, Hierba del Gato, Rubaldo | Dry uplands. | S. TX, Panhandle TX, w. TX, n. NM south to c. Mexico. |  |
| Euphorbiaceae | Croton discolor | Lechecillo | |||
| Euphorbiaceae | Croton elliottii | Pondshore Croton, Elliott's Croton | Shores and exposed drawdown zones of clay-based Carolina bays and limesink ponds (dolines). | Se. SC south to Panhandle FL, west to se. AL. |  |
| Euphorbiaceae | Croton floridanus | Florida Doveweed | Beaches, dunes, sandy disturbed areas. | Endemic to s. FL (Broward, Collier, Lee, Manatee, Martin, and Pinellas counties). |  |
| Euphorbiaceae | Croton fruticulosus | Encinilla, Hierba Loca | In brush on limestone or caliche. | C. TX west to s. AZ, south to n. and c. Mexico. | |
| Euphorbiaceae | Croton glandulosus var. arenicola | Beaches, dunes, sandy disturbed areas. | Endemic to s. FL (Miami-Dade, Monroe, and Palm Beach counties). |  | |
| Euphorbiaceae | Croton glandulosus var. lindheimeri | Dry, sandy areas. | KS south to TX, NM, and TAM. |  | |
| Euphorbiaceae | Croton glandulosus var. pubentissimus | South Texas Croton | Coastal and near-coastal sand dunes. | Endemic of coastal TX, from se. TX (Brazoria County) to s. TX (Cameron and Hidalgo counties). |  |
| Euphorbiaceae | Croton glandulosus var. septentrionalis | Doveweed, Tooth-leaved Croton, Sand Croton, Northern Croton | Fields, roadsides, disturbed areas. | C. glandulosus is widespread in tropical and subtropical America; var. septentrionalis is the northernmost variety, distributed from PA west to MN, south to FL, TX, and ne. Mexico (its exact pre-Columbian range is speculative because of its weedy nature). See discussion by Atha, Hewitt, & Wang (2020) for discussion of northern records. |  |
| Euphorbiaceae | Croton heptalon | Woolly Croton | Disturbed areas. | Native of s. TX and ne. Mexico (TAM). | |
| Euphorbiaceae | Croton humilis | Pepperbush, Low Croton, Salvia | Rockland hammocks, disturbed uplands. | S. FL (Miami-Dade County, Collier County, and mainland and keys of Monroe County); West Indies. |  |
| Euphorbiaceae | Croton incanus | Torrey's Croton | Calcareous loams and uplands. | S. TX and w. TX south to c. Mexico. | |
| Euphorbiaceae | Croton leucophyllus var. leucophyllus | Calcareous clay soils. | S. TX and w. TX south into n. Mexico. | ||
| Euphorbiaceae | Croton lindheimeri | Goatweed, Lindheimer’s Croton | Calcareous glades, edges of crop fields, other disturbed areas. | SC, IN, MO, e. KS, and south to c. peninsular FL, s. TX and Mexico (the adventive vs. native range somewhat unclear). |  |
| Euphorbiaceae | Croton lindheimerianus var. lindheimerianus | Lindheimer's Croton, Three-seeded Croton | Sandy loam hillsides, rocky clay hillsides; fields and other disturbed soils in the eastern part of our region, adventive from farther west. | AR, s. KS, NM, and AZ south through s. LA and TX to Mexico (COA, NLE, TAM). |  |
| Euphorbiaceae | Croton linearis | Pineland Croton, Grannybush | Pine rocklands, marl prairies, coastal strands, disturbed uplands. | S. FL; West Indies. |  |
| Euphorbiaceae | Croton michauxii | Sand Rushfoil, Michaux's Croton, Narrowleaf Rushfoil | Longleaf pine sandhills, disturbed sandy soils. | Se. NC and SC south to s. FL, west to TX, north in the interior to MO, IL, and IA. Fernald (1950) alleges that this species extends as far north as VA, but the documentation is unknown to me. See Ungberg (2022) for documentation of its occurrence in NC. |  |
| Euphorbiaceae | Croton monanthogynus | Prairie-tea, One-seed Croton | Limestone outcrops, blackland prairies, disturbed dry soil. | Sw. VA, OH, IN, IA, NE, and CO, south to nw. GA, FL, TX, and Mexico (COA, NLE, SLP, TAM); adventive as a weed at scattered locations east of the Blue Ridge. |  |
| Euphorbiaceae | Croton parksii | Parks's Croton | In deep sands and sandy loams. | S. TX. | |
| Euphorbiaceae | Croton pottsii var. pottsii | Leatherweed, Encinilla | Grasslands and scrub over limestone. | C. and s. TX, NM, and AZ south to Mexico. |  |
| Euphorbiaceae | Croton punctatus | Silverleaf Croton, Beach-tea, Gulf Croton, Hierba de Jabali | Beach dunes, coastal grasslands, usually with Uniola paniculata and/or Spartina patens. | NC (Dare County) south to s. FL, west to TX, and south through e. Mexico into Central and n. South America; West Indies. |  |
| Euphorbiaceae | Croton soliman | Soliman's Croton | Thickets. | Extreme se. TX (Cameron County) south to ne. Mexico. | |
| Euphorbiaceae | Croton texensis | Texas Croton, Skunkweed | Sandy or sandy loam areas; eastwards in disturbed areas. | W. MO, SD, WY, and UT south to TX, NM, AZ, and Mexico. |  |
| Euphorbiaceae | Croton trinitatis | Ballast piles, apparently only a waif. | Native of Central and South America. Collected once in Pensacola, Escambia County, FL |  | |
| Euphorbiaceae | Croton willdenowii | Glade Rushfoil, Outcrop Rushfoil, Broadleaf Rushfoil, Willdenow's Croton | Granitic flatrocks, diabase barrens, calcareous barrens, thin soils around other rock outcrops, open woodlands, disturbed sandy soil. | CT, se. PA (Rhoads & Block 2007), IL, and se. KS, south to ne. FL, Panhandle FL, and TX. |  |