NAME Monoporisporites van der Hammen 1954.
AGE    AGE span:  mya
K&J CLASSIFICATION (2000) Fungi Imperfecti, Amerosporae.
FIGURE(S)
FIGURE REFERENCE
SPECIES, AUTHORITY Polyporisporites van der Hammen 1954, p. 83.
LOCATION
ORIG DESCRIPTION* ORIGINAL DIAGNOSIS: [Fungal] spores with more than three small pores. [Jansonius & Hills (1976), card no. 2110.]

Monotypic.
COMMENTS*
PUBLICATION REFERENCE Van Der Hammen T. 1954. El desarrollo de la flora Colombiana en los periodos geológicos. I. Maestrichtiano hasta Terciario más inferior; Boletín Geológico, v. 2, p. 49-106.

Jansonius J, Hills LV. 1976. Genera file of fossil spores; Special Publication, Department of Geology, University of Calgary, cards 1-3287 cds.
K&J REMARKS Elsik (1992) made the following comments on Polyporisporites: "Although the polyforate fungal spores of Pucciniaceae (rusts) occur in Middle Eocene and younger strata, they are more or less spherical in shape. No truly polyforate, psilate spore of lenticular [or oval] outline is known in extant fungi. Rather, it appears that germinals or degradation perforations can be common in Polyporisporites and Lacrimasporonites types. Most often an apical pore is the only opening in the spore wall. Polyporisporites is a misnomer, but has priority in the literature as a validly published name for psilate, monocellate, monoporate, elongate fungal spores."

Kalgutkar and Jansonius (2000) have enlarged the concept of Monoporisporites to include spherical and elongate spores (see remarks from Kalgutkar & Jansonius (2000) under that genus). Kalgutkar and Jansonius (2000) agree with Elsik's argumentation in the previous paragraph. Consequently, they consider Polyporisporites to be a junior taxonomic synonym of Monoporisporites. Besides the three pores, van der Hammen's drawing also seems to indicate the presence of a longitudinal feature (furrow?), running from pole to pole; no equivalent feature has been seen in Monoporisporites. However, the drawing also suggests the presence of a flat hilum, and on the basis of this feature, Kalgutkar and Jansonius (2000) formally propose that Polyporisporites be considered a junior synonym of Monoporisporites.
TYPE TYPE: Polyporisporites elongatus van der Hammen 1954, p. 83, pl. 21.
ALL NAMES (Including synonyms) Monoporisporites van der Hammen 1954.;
SERIAL NUMBER 1438
PUBLIC COMMENTS
 *For source, see Publication Reference.