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Published In: Deutschlands Flora, Abtheilung II, Cryptogamie 15: [14] ic. 1816. (Deutschl. Fl., Abt. II, Cryptog.) Name publication detail
 

Project Name Data (Last Modified On 2/17/2011)
Acceptance : Accepted
Project data     (Last Modified On 2/17/2011)
Discussion:

Grimmia elongata has linear-lanceolate, generally short hair-pointed leaves, but occasionally the uppermost leaves are muticous. Its upper and median leaf cells are irregularly shaped, incrassate and generally sinuous while its basal leaf cells are long-rectangular with thin, evenly thickened walls. The basal cells often extend upward along the margins in a v-shaped pattern. The only fertile collection from Central America (Steyermark 35549a, FH) has unusually short setae. Grimmia ovalis differs from it in its bigger size, dark-green to blackish color, flat, mostly indistinct costa, and plane margins. Grimmia longirostris and G. trichophylla have basal marginal cells with transverse walls thicker than longitudinal walls, and they usually have longer hair-points than G. elongata.
Illustrations: Cha_ubi_ski (1882, Tab. 10 18); Loeske (1913, 17 g, 23 e, 25 a); Nyholm (1956, Fig. 69G); Lawton (1971, Pl. 59); Petrov (1975, Pl. 64 3); Smith (1978, Fig. 149 6–8); Noguchi (1988, Fig. 139B); Jóhannsson (1993, Pl. 33); Sharp et al. (1994, Fig. 296); Maier and Geissler (1995, Fig. 12). Figure 96.
Habitat: On crevices of bluff, north-facing rocky wall; 3800–4600 m.
Distribution in Central America: GUATEMALA. San Marcos: Sharp 5429 (MO, TENN).
World Range: Subarctic America, Western and Eastern Canada; Mexico; Central America; Western and Southern South America, Brazil; Northern, Southwestern, Middle, Southeastern, and East Europe; Siberia, Russian Far East, Caucasus, Middle Asia, China, Mongolia, Eastern Asia, Western Asia; Western Indian Ocean; Indian Subcontinent.

 

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Grimmia elongata Kaulf. in Sturm, Deutschl. Fl., Abt. II, Cryptog. 2(15): 14. 1816. 

Protologue: Austria. Diefes moos fand ich im August 1812 auf der Seethaler Alpe in Steiermark in Steinrissen mit reifen Fruchten. (B). 

Plants small in dense cushions, brown below, reddish above. Stems erect, to 15 mm high, central strand present; rhizoids sparse. Leaves stiffly erect, imbricate, or erect‑patent when dry, erect‑spreading when wet, 1.6–2.4 mm long, linear-lanceolate, keeled, acuminate, hair‑points absent or short and smooth, only on the uppermost leaves; margins uni- to bistratose, recurved on one or both sides, otherwise plane, entire; costa percurrent, terete at back; lamina unistratose; cells smooth, upper cells 8–14 x 6–8 μm, irregularly quadrate to short‑rectangular, incrassate, with straight or sinuose walls, median cells 10–22 x 6–8 μm, quadrate to rectangular, incrassate with sinuose walls, basal cells near costa 40–50 x 8–10 μm, rectangular, evenly thickened walls, basal marginal cells 40–65 x 6–10 μm, long-rectangular, with thin, evenly thickened. Dioicous. Setae straight, 2 mm long. Capsules emergent to exserted, 1 mm long, ovate, erect, smooth; opercula erect‑ or oblique‑rostrate, 0.5 mm long. Other features not seen in Central American material. " ... calyptra cucullate-mitrate, 2–5 lobed at base; lid conical, obtuse; annulus fragile, of 1–3 small reddish cells; stomata large, in one row; peristome teeth papillose, entire or slightly cribrose; spores yellow, finely granulose, 12–16 μm in diameter" (Jones (1933).

 

 

 
 
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