Encalypta flowersiana

D. G. Horton

Bryologist 82: 374. 1979,

Treatment appears in FNA Volume 27. Treatment on page 175. Mentioned on page 173.
Revision as of 19:38, 24 September 2019 by Volume Importer (talk)
Stems 6–11 mm, central strand small, cells very thin-walled. Leaves broadly oblong to lingulate, 1.5–3 mm; apex muticous, obtuse to rounded; margins plane; costa ending below apex; laminal cells 10–16 µm; basal cells 30–50 µm, smooth; basal marginal cells differentiated proximally, in 3–5 rows, longer than laminal cells. Specialized asexual reproduction absent. Seta 3–5 mm, reddish brown. Capsule short-cylindric, 1.5–3 mm, striate to weakly ribbed, yellowish brown; exothecial cells long-rectangular to linear; peristome absent; operculum 0.5–0.7 mm long. Calyptra 2.5–4 mm, lacerate at base, papillose on rostrum. Spores 35–40 µm, with vermiculate ridges, brown.

Habitat: Calcareous soil over rock, deciduous woodlands

Distribution

V27 225-distribution-map.gif

Tex., West Indies (Haiti), Central America (Guatemala).

Discussion

Encalypta flowersiana is recognized by its small size, narrow leaves, subpercurrent costa, and distinctly ridged spores. The species is similar to E. mutica and E. texana in the absence of a peristome and leaf awn. The most useful difference is spore ornamentation (see the discussions with those species). Currently, E. flowersiana is known in the flora area only from the Chisos Mountains of western Texas, but its small size and the rugged terrain of its habitat may mask a broader distribution in the mountains of the southwestern United States and northern Mexico.

Selected References

None.

Lower Taxa

None.