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Published In: Botanische Zeitung (Berlin) 20: 361. 1862. (Bot. Zeitung (Berlin)) Name publication detailView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 3/9/2011)
Acceptance : Accepted
Project data     (Last Modified On 3/9/2011)
Discussion:

Zygodon pungens is an inconspicuous moss that usually grows in scattered clumps of 1 to 10 plants. It and Z. gracillimus are the only Central American species of Zygodon section Bryoides Malta. These regional species of sect. Bryoides are small plants with markedly enlarged basal cells near the costa, and double peristomes with 16 stout exostome teeth that are united into eight pairs. This section was used by Malta (1926) for a group of smooth-celled Zygodon species, and this is also how Goffinet & Vitt (1998) define the segregate genus Codonoblepharum. Zygodon pungens and Z. gracillimus are gametophytically close. Zygodon gracillimus differs from Z. pungens by its shorter (ending 4–10 cells below the leaf apex) costae, dioicous sexual condition, longer (4–6 mm) setae, and somewhat longer (1–1.3 mm) capsules.

Although Z. pungens is autoicous and fruits frequently, without sporophytes the species could be confused with Daltonia which has the same habitat, plant size and a tendency for enlarged basal cells near the costa. The gametophytes of Daltonia differ from Z. pungens in having slender, subpercurrent costae, and longer, thinner-walled upper leaf cells.
Illustrations: Malta (1926, Fig. 90). Fig. 271 E–I.
Habitat: On bark of tree trunks; 1300–1700 m.
Distribution in Central America: GUATEMALA. Alta Verapaz: Türckheim (H). HONDURAS Comayagua: Allen 14011B (MO); Lempira: Allen 11844 (MO). COSTA RICA. Cartago: Standley 33611a (FH).
World Range: Central America; Northern South America, Brazil.

 

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Zygodon pungens C. Müll., Bot. Zeitung (Berlin) 20: 361. 1862.

Codonoblepharum pungens (C. Müll.) Jaeg., Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1872–73: 119. 1874. Protologue: Venezuela. In cortice arborum: Moritz.

Zygodon tuerkheimii Broth. in Malta, Latv. Univ. Bot. Darza Darbi 1: 150. 1926, nom. nud. Based on Guatemala: Coban, in arb. 1310 m und Cubilgüitz (?), in arb. 350 m (Türckheim) [NY].

Plants slender, sparsely clustered or scattered, greenish yellow above. Stems erect to 1–3 mm high, sparsely tomentose. Leaves erect‑patent when dry, erect-spreading when wet, 0.6–1.6 mm long, lanceolate; apices acute; margins entire, plane; costae stout, excurrent, with elongate cells on upper dorsal surface; upper cells 8–12 μm, rounded to irregularly rhombic, occasionally oblate, incrassate, smooth, basal cells near costa 18–36 (–60) μm long, enlarged, thin‑walled, bulging, oblong, smooth. Brood bodies not seen. Autoicous. Setae 1.5–3.0 long, smooth, yellow when young, becoming red‑brown with age. Capsules 0.8–1.0 mm long, obovoid to oblong, 8‑ribbed when dry, constricted at neck; opercula obliquely conic‑rostrate, 0.5–0.7 mm long; peristome double, exostome teeth16 united into 8 teeth‑pairs, red but becoming white with age, densely papillose to horizontally striate below, papillose above in vertical lines, reflexed to recurved when dry to 140–200 μm, endostome _ to ¾ the length of the exostome teeth, red, basal membrane short, cilia absent, segments stout, papillose or vertically striate‑papillose, erect when dry. Spores isosporous, 14–20 μm, smooth. Calyptrae cucullate, smooth, 1.0–1.5 mm long.

 

 

 
 
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