Schistidium brunnescens Limpr.

Guerra, Juan, Cano, María J., Martínez, Mónica, Jiménez, Juan A. & Gallego, M. Teresa, 2021, Schistidium apocarpum complex (Grimmiaceae, Bryophyta) in the Baetic Mountain Ranges, southern Iberian Peninsula, Cryptogamie, Bryologie 20 (5), pp. 45-71 : 52

2. Schistidium brunnescens Limpr.

( Fig. 5)

Die Laubmoose Deutschlands, Oesterreichs und der Schweiz 1: 714

(1889).

HABITAT. — Exposed calcareous rocks, from 1650 to 1670 m. Distribution: Figure 6. This species was known from very few provinces of Spain and is here reported for the first time in the southern half of the country (Granada and Murcia provinces).

DESCRIPTION

Plants

Small, (0.5)1-1,5 cm long, forming dense tufts, pale brown.

Leaves

Straight, erect, imbricate, oblong, ovate to ovate-triangular, acute to acuminate, 1.1-2.0 × 0.3-0.4(0.7) mm.

Hair-point

Usually present, rarely absent in some leaves, with scattered spinulae, (0) 0.25-0.9 mm long.

Lamina

Smooth, in upper and central part 1-stratose with occasional 2-stratose striae; margins plane or recurved in mid-leaf on one side, 1- to 2-stratose in upper and central part.

Laminal cells

In upper and central part isodiametric to transversely oval, not or slightly sinuose, mixed with oblate cells, 6-9 µm long, basal cells not or slightly sinuose, 20-40(45) × (6)8-10 µm. Perichaetial leaves ovate to ovate-lanceolate, sometimes oblong, acute, not abruptly narrowed into the hyaline hair point, 2-2.8 × 0.6-0.8(0.9) mm.

Urn

Broadly ovoid to shortly oblong, (0.6)0.7-0.9(1.2) × 0.5- 0.6(0.7) mm, yellow to orange-brown.

Exothecial cells

Predominantly

Oblong, long and curved, mixed with patches of short rectangular cells, stomata absent.

Peristome teeth

200-250(340) µm long, entire to semi-perforated in upper and central part, orange to orange-red.