Isoëtes histrix
Island distribution (first record)
Othonoi
Ereikoussa
Mathraki
!! !! ... approved by herbarium voucherCorfu (Gelmi 1889 as Isoetes histrix)
Paxos
Antipaxos
!! !! ... approved by herbarium voucherLefkada (Gutermann 1997 as Isoetes histrix)
Meganisi
Kalamos
Kastos
Atokos
Ithaka
Echinades
!! !! ... approved by herbarium voucherCephalonia (Gutermann 1997 as Isoetes histrix)
Zakynthos (Boissier 1884 as Isoetes hystrix var. subinermis)
Strofades
Annotation: Our materials from the Ionian Islands can be referred to var. subinermis (indicated for Zakynthos already by Boissier 1884: 748) as defined in »Flora of Turkey« (Jermy 1965), including those from Corfu though with exception of a collection from Lake Korission (leg. W. Gutermann no. 20075) which corresponds to the type. Recent studies have shown that these two taxa should be treated as separate species in respect to different chromosome numbers (Cesca & Peruzzi 2001) and molecular data (Bolin & al. 2008). Morphological discrimination still is controversial, however, without karyological confirmation between what is known as »typical« I. histrix Bory on the one hand, and I. sicula [»I. gymnocarpa«; cf. Bagella & al. 2015] on the other (the latter is said to correspond to var. subinermis Boiss.). Pending further chromosomal studies and micromorphological analysis of the spores, we refrain to classify our materials more specifically at present. [2022-11-30]
Taxonomic references ("taxonyms")
linked to standard floras (PFB, FE, FE2, FH) and annotated checklists (AFE, VPG) giving direct reference to occurrences of plant taxa on the Ionian Islands:
PFB: | Isoetes hystrix |
FE: | Isoetes histrix |
FE2: | Isoetes histrix |
AFE: | Isoetes histrix |
FH: | volume not published |
VPG: | Isoetes histrix |