Hypoglossum attenuatum Gardner
Dawson (1956) reported this species from the southern Marshall Islands
[not listed in Tsuda & Wray (1977)]. Wynne et al. (1989) questioned
Dawson’s (1954) record of this species from Viet Nam, but did not mention
his 1956 record. Tsuda (1981b) included it in his checklist for Guam on
the basis of an unnumbered specimen in GUAM-ML collected by L. Egerod;
there are also vouchers from Maug, Rota, and Chuuk.
caloglossoides Wynne & Kraft
According to Wynne et al. (1989), Dawson’s specimens of H. minimum
are Hypoglossum simulans; they do not comment on other records of
this species in our region.
simulans Wynne, Price & Ballentine
[including Dawson’s specimens of H. minimum and both Dawson’s (1956) and
Taylor’s (1950) specimens of Caloglossa leprieurii, according to Wynne
et al. 1989.]
Habit on Udotea; arrow points to tetraporangial sorus (see photos below).
Coral gardens (Agat Bay) 16 Feb 03.
4x, BF general view of thallus.
tetrasporangial sorus, 20x DIC
Cells in phase contrast showing plastids and nuclei.
Spermatangial sori. Specimen from GabGab, 16 Mar. 2003.
Apex, showing pattern of cell tiers including long-oblique divisions in the