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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

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Family	Scientific Name	Common Name	Habitat	Distribution
Betulaceae	Alnus crispa	Green Alder, Mountain Alder	Grassy balds, shrub balds, spruce-fir forests, and rock outcrops at high elevations (1600-1900m) in the Roan Mountain Massif, Mitchell and Avery counties, NC and Carter County, TN.	Greenland to NT south to MA, NY (Adirondacks), n. MI, n. WI, c. MN, SK, and AB; disjunct in montane PA; disjunct on the Roan Mountain massif (Mitchell and Avery counties, NC and Carter County, TN).
Betulaceae	Alnus glutinosa	Black Alder, European Alder	Disturbed areas, suburban woodlands, wetland restoration areas (where sometimes planted and spreading).	Native of Europe. Sometimes cultivated, especially northward, and naturalizing in wetlands southwards at least to e. TN and w. NC. Also been reported for Morgan County, TN (Chester, Wofford, & Kral 1997). Reported as well-established in Washington County VA (Virginia Botanical Associates 2018).
Betulaceae	Alnus maritima ssp. georgiensis	Georgia Alder	Standing water of Ridge-and-Valley spring run.	Endemic to a single site in Bartow County, GA.
Betulaceae	Alnus maritima ssp. maritima	Seaside Alder, Delmarva Alder	Ecotones between fresh tidal marshes and tidal swamps, open-canopy Atlantic white cedar swamps, streambanks, ponds, shores.	Endemic to five counties in the Delmarva Peninsula of MD and DE.
Betulaceae	Alnus maritima ssp. oklahomensis	Oklahoma Alder		Endemic to Johnston and Pontotoc counties, sc. OK.
Betulaceae	Alnus rugosa	Speckled Alder	Swamps, wet thickets, marshes, alluvial shores, other seepy or saturated wetlands. Braided streamhead seepage swamps (in VA).	NL west to SK, south to e. MD, w. VA, WV, IN, n. IL, ne. IA, MN, and e. ND.
Betulaceae	Alnus serrulata	Tag Alder, Smooth Alder, Hazel Alder	Streambanks, bogs, wet thickets, pondshores, lakeshores.	NS west to s. QC, MO, and OK, south to ne. FL, Panhandle FL, and TX.

Family

Scientific Name

Common Name

Habitat

Distribution

Image

Betulaceae

Alnus crispa

Green Alder, Mountain Alder

Grassy balds, shrub balds, spruce-fir forests, and rock outcrops at high elevations (1600-1900m) in the Roan Mountain Massif, Mitchell and Avery counties, NC and Carter County, TN.

Greenland to NT south to MA, NY (Adirondacks), n. MI, n. WI, c. MN, SK, and AB; disjunct in montane PA; disjunct on the Roan Mountain massif (Mitchell and Avery counties, NC and Carter County, TN).

Betulaceae

Alnus glutinosa

Black Alder, European Alder

Disturbed areas, suburban woodlands, wetland restoration areas (where sometimes planted and spreading).

Native of Europe. Sometimes cultivated, especially northward, and naturalizing in wetlands southwards at least to e. TN and w. NC. Also been reported for Morgan County, TN (Chester, Wofford, & Kral 1997). Reported as well-established in Washington County VA (Virginia Botanical Associates 2018).