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Florissantia ashwillii

Florissantia ashwillii was named by Manchester (1992). Its type locality is Sheep Rock Creek Locality, which is in an Eocene/Eocene terrestrial horizon in the Clarno Formation of Oregon.

Synonymy list
YearName and author
1992Florissantia ashwillii Manchester

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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

S. R. Manchester 1992Pedicel 0.6 mm thick, at least 13 mm long. Calyx 21-31 mm diam, gamosepalous, shallowly campanulate, membranaceous, five-parted; calyx incision 40%-60% with lobes well developed, persistent in fruit, with prominent radiating reticulate venation; narrowed and conforming to outline of androgynophore at base. Petals absent. Androgynophore up to 1.5 mm long, thickened into a disk 1.5-1.7 mm diam at the base of the ovary. Ovary superior, obovate, rounded to five-angled in transverse view, with a single style. Androecium consisting of five stamens with filaments fused by their bases into a narrow circular sleeve around the base of the ovary. Filaments 3.5-6.4 mm long. Anther 1.00 mm wide, 1.9 mm long, elongate, transversely sepatate. Pollen oblate, 20-22.5 micrometers (Canada balsam) or 25-27.5 micrometers (glycerine gelly) equatorial diam, isopolar, radially symmetrical, tricolporate, with short colpi. Amb circular to rounded-triangular. Each aperture situated midway between two adjacent angles in grains with rounded-angular amb. Ornamentation reticulate, with smooth muri and more or less amgular lamina 0.4-1.0 micrometers. Fruit consisting of the enlarged ovary, the persistent calyx, and pedicel. Fruit body circular to pentagonal in transverse view 4.1-5.6 mm diam, elliptical in longitudinal view.