Isoetes flaccida

Taxonavigation

Taxonavigation: Isoetales
Superregnum: Eukaryota Cladus: Diaphoretickes Cladus: CAM Cladus: Archaeplastida Regnum: Plantae Divisio: Tracheophyta Divisio: Lycopodiophyta Classis: Lycopodiopsida Subclassis: Isoetidae Ordo: Isoetales

Isoetes flaccida Shuttlew. ex A.Braun, Flora 29: 178 (1846).

Typus: United States, Florida: Leon Co.: Lake Iamonia, 1842, Rugel s.n. (lectotype: MO, designated by N. Pfeiffer, Ann. Missouri Bot. Gard. 9: 136 (1922).)

Homotypic
- Calamaria flaccida (A.Braun) Kuntze, Rev. Gen. Pl. 2: 828 (1891).

Native distribution areas:
Continental: Northern America Regional: Southeastern U.S.A. Alabama, Florida, Georgia References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2^nd Edition

Braun, A.K.H. 1846. Ueber die nordamericanischen Isoëtes-Arten. Flora oder Botanische Zeitung 29(12): 177–180. BHL Reference page.

Troìa, A., Pereira, J.B.S., Kim, C. & Taylor, W.C. 2016. The genus Isoetes (Isoetaceae): a provisional checklist of the accepted and unresolved taxa. Phytotaxa 277(2): 101–145. DOI: 10.11646/phytotaxa.277.2.1 ResearchGate Reference page.
Pfeiffer, N.E. 1922. Monograph of the Isoetaceae. Annals of the Missouri Botanical Garden 9(2): 79–218, pls. xii–xix. JSTOR, BHL Reference page.

Govaerts, R. et al. 2026. Isoetes flaccida in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2026 May 30. Reference page.
Tropicos.org 2026. Isoetes flaccida. Missouri Botanical Garden. Published online. Accessed: 30 May 2026. Reference page.
International Plant Names Index. 2026. Isoetes flaccida. Published online. Accessed: 30 May 2026. Reference page.
Hassler, M. 2026. World Ferns. Checklist of Ferns and Lycophytes of the World. . Isoetes flaccida Accessed: 30 May 2026. Reference page.
Keener, B.R. et al 2017. Alabama Plant Atlas. Isoetes flaccida. University of West Alabama, Livingston, Alabama. Original application development: S.M. Landry & K.N. Campbell, Florida Center for Community Design and Research. University of South Florida.