Checklist » Isoetaceae » Isoetes tenella
Last updated 3/25/2016 by David Giblin.
Isoetes tenella Léman[HC2]
bristle-like quillwort, spiny spored quillwort

Publication: Mém. Soc. Linn. Paris 6: 179.

Origin: Native

selected vouchers: WTU

Notes: FNA2: "North American plants of Isoetes echinospora, which bear stomata, have been called I. muricata or I. echinospora var. braunii to distinguish them from European plants of I. echinospora, which do not have stomata.

Isoetes echinospora is a distinct species but has considerable variation, especially in size, color, and form of leaves. It is the most commonly encountered quillwort in oligotrophic, noncalcareous lakes and ponds of northeastern North America.

Isoetes echinospora hybridizes with I. bolanderi; I. engelmannii [ = I. x eatonii Dodge (later synonym = I. x gravesii A. A. Eaton)]; I. lacustris [ = I. x hickeyi Taylor & Luebke]; I. maritima; I. riparia [ = I. x dodgei A. A. Eaton]; and I. tuckermanii."

References: (none)

Synonyms & Misapplied Names:
Isoetes braunii Durieu[Abrams]
Isoetes echinospora Durieu[FNA2, HC]
Isoetes echinospora Durieu var. braunii (Durieu) Engelm.
Isoetes echinospora Durieu var. muricata (Durieu) Engelm.
Isoetes muricata Durieu
Isoetes setacea Lam.[VPPNW1]