Isoetes in Alaska and the Aleutians
Britton DM, Brunton DF, Talbot SS. 1999. Isoetes in Alaska and the Aleutians. American Fern Journal. 89(2):133-141
Three species of Isoetes are recognized as present in the study area: I. echinospora Durieu (diploid, 2n=22), I. maritima Underw. (tetraploid, 2n=44) and I. occidentalis L.F. Hend. (hexaploid, 2n=66). Three interspecific hybrids are expected and two are known to be present: I. ×pseudotruncata D. M. Britton & D. F. Brunton (triploid, 2n = 33) and I. ×truncata (Eaton) Clute (pentaploid, 2n = 55). The missing hybrid taxon is I. echinospora (diploid) × I. occidentalis (hexaploid).
- Type
- Journal Article
- Authors
- Britton, Donald; Brunton, Daniel; Talbot, Stephen
- Units
- ALAG , ANIA , ARCN , BELA , CAKN , CAKR , DENA , GAAR , GLBA , KATM , KEFJ , KLGO , KOVA , LACL , NOAT , SITK , SWAN , WRST , YUCH , SEAN
- Keywords
- Canada, Hybrid, Isoetaceae, Japan, riparia