Neckera besseri

(Lobarzewski) Juratzka

Verh. K. K. Zool.-Bot. Ges. Wien 10: 368. 1860.

Basionym: Homalia besseri Lobarzewski Naturwiss. Abh. (Vienna) 1: 48. 1847
Treatment appears in FNA Volume 28. Treatment on page 606. Mentioned on page 604.
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Plants to 2 cm. Stems with branches common, flagelliform; paraphyllia absent. Stem leaves (central) ovate to obovate, flat, 1.1–1.3 × 0.4–0.6 mm; margins entire; apex obtuse to broadly acute; costa double, short, rarely single; alar cells irregularly quadrate; basal laminal cells irregularly rectangular, 25–37 × 7 µm; distal medial cells rhombic to rhomboidal, 15–18(–30) × 7–9 µm; apical cells rhombic, 5–12 × 7 µm. Sporophytes unknown.


Habitat: Limestone or sandstone cliffs, soil
Elevation: moderate elevations (300-500 m)

Distribution

V28 950-distribution-map.gif

Ark., Ky., Mo., N.J., N.Y., Tenn., Vt., Va., Europe.

Discussion

Neckera besseri is distinguished from other species of Neckera in the flora area by its small stature and ovate to obovate stem leaves; distribution is limited to eastern North America. K. A. Wagner (1952) and R. R. Ireland (1961) treated this species as Homalia jamesii and H. gracilis, respectively, but He S. (1997) accepted it as Neckera.

Selected References

None.

Lower Taxa

None.