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Published In: Bryologia Europaea 5: 217 (fasc. 57–61. Monogr. 1). 1854. (Bryol. Eur.) Name publication detail

Project Name Data (Last Modified On 11/6/2012)
Acceptance : Accepted
Project Data     (Last Modified On 10/8/2017)
Plant Category: Mosses

Notes     (Last Modified On 10/8/2017)

Eurhynchium is states to contain some 60 or more species, associated with temperate regions of the world; about 10 species in the Neotropics. The genus is generally characterized by the often differentiated stem and branch leaves, broadly oblong-ovate or ovate leaves, at least with reference to branch leaves; the acute to acute-round apices; apical cells shorter than those of the mid-lamina; alar cells, if differentiated, oblong-rectangular; and the conic long-rostrate operculum. In the tropical Andes Eurhynchium is found from mid to high montane open forest and exposed sites; on soil, rock, and logs. Eurhynchium praelongum (Hedw.) Schimp. is recognized as Kindbergia praelonga (Hedw.) Ochyra in this treatment. Both Eurhynchium and Rhynchostegium require a critical revision; given the rather tangled historical concept of these two genera, a taxonomic review should include both genera.
Eurhynchium contiene unas 60 especies o más, asociado con regiones templadas del mundo; ca. 10 especies registradas en el Neotrópico. Este género se caracteriza por presentar hojas anchamente ovadas u oblongo-ovadas, por lo menos con respecto a las hojas de las ramas; ápices agudos hasta agudo-redondeados; células apicales tan cortas como las células de la lámina media; células alares, si diferenciadas, oblongo-rectangulares; y opérculo cónico largo-rostrado. Las especies no son del todo conocidas en el Neotrópico, es muy necesaria una revisión, incluyendo a Rhynchostegium.
Status Unknown or Reports Questionable:
Eurhynchium oedogonium (Müll. Hal.) Broth., Nat. Pflanzenfam. 1(3): 1157. 1909. Cratoneuron oedogonium Müll. Hal., Nuovo. Giorn. Bot. Ital. n. s. 4: 162. 1897. Hypnum oedogonium (Müll. Hal.) Paris, Index Bryol. Suppl. 206. 1900. Kindbergia oedogonium (Müll. Hal.) Ochyra, Beih. Nova Hedwigia 88: 56. 1987. Type: Bolivia. Sin. loc. & leg. Possible type data: Cochabamba, prope Choquecamata, Germain. Reported from Colombia, Peru and Bolivia at elevations from 2800-3400 m. This may be a synonym of Kindbergia praelonga (Hedw.) Ochyra’
Eurhynchium pseudopiliferum (Hampe) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1876-77: 355. 1878. Hypnum pseudopiliferum Hampe, Ann. Sci. Nat., Bot. 5, 5: 324. 1866. Type: Colombia. Cundinamarca, Bogota, los Laches, 2700 m, Lindig s.n. (BM). Status unknown, could possibly represent a Rhynchostegium.
Eurhynchium rugisetum (Hampe) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1876-77: 358. 1878. Hypnum rugisetum Hampe, Ann. Sci. Nat., Bot. 5, 5: 342. 1866. Type: Colombia. Bogota, Tequendama, 2500 m, Lindig s.n. (BM). Reported from Colombia and Bolivia at elevations from 2200-2500 m. Status unknown.
Eurhynchium semitortum (A. Jaeger) Paris, Index Bryol. 447. 1896. Hypnum semi-tortum Mitt., J. Linn. Soc., Bot. 12: 556. 1869, hom. illeg. Rhynchostegium semi-tortum A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1876-77: 364. 1878. Type: Colombia. Reported from Colombia and Bolivia at elevations from 2200-2500 m. Status unknown. The type apparently is not present at NY.


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Plants forming rather course mats, dull dark green to occasionally golden- or yellowish-green. Stems spreading, distal stems and branches spreading to ascending, pinnately to irregularly branched; central strand present; pseudoparaphyllia foliose. Leaves of stems and branches similar or strongly dimorphic, usually not complanate. Stem leaves ovate to broadly ovate- or cordate-lanceolate, occasionally plicate, apex abruptly short to long acuminate, often strongly so, base short to long decurrent; margins plane or often reflexed at base, serrate to serrulate throughout, often entire at base; costa single, 1/2-4/5 lamina length (occasionally shorter), strong; apical cells mostly shorter and broader; median cells oblong to oblong-linear, thick-walled; basal cells thick- or thin-walled; alar region not well differentiated. Branch leaves ovate-oblong or -short lanceolate, apex mostly bluntly acute; margins serrate throughout; costae single, 3/4-4/5 lamina length, usually ending in a tooth; apical cells distinctly shorter and broader than median cells, median cells oblong-linear. Dioicous or autoicous. Perichaetia lateral. Setae elongate, smooth to roughened or scabrous. Capsules inclined to horizontal, rarely subpendulous, urn ovoid-cylindrical; opercula conic-long rostrate; peristome double, exostome teeth 16, finely cross-striate; endostome basal membrane high, segments 16, keeled and perforate, cilia present. Calyptrae cucullate, smooth and naked. Spores spherical, smooth.
Plantas formando matas bastante correosas, de color verde oscuro opaco hasta ocasionalmente dorado- o verde-amarillento. Tallos patentes, tallos y ramas distales patentes hasta ascendentes, ramificaciones irregularmente pinnadas; cordón central presente; pseudoparáfilos foliosos. Hojas de tallos y ramas similares o marcadamente dimorfas, generalmente no comprimidas. Hojas del tallo ovadas hasta anchamente ovado- o cordado-lanceoladas, ocasionalmente plegadas, ápices abruptamente cortos a largo-acuminados, a menudo muy marcados, bases corto- hasta largo-decurrentes; márgenes planos o a menudo reflexos en la base, serrados hasta completamente serrulados, a menudo enteros en la base; costa simple, ocupando 1/2-4/5 la longitud de la lámina (ocasionalmente corta), fuerte; células apicales generalmente cortas y más amplias; células mediales oblongas a oblongo-lineales, con paredes gruesas; células basales con paredes gruesas hasta delgadas; región alar no bien diferenciada. Hojas de las ramas ovado-oblongas o corto-lanceoladas, ápices por lo general obtusamente agudos; márgenes completamente serrados; costa simple, ocupando 3/4-4/5 la longitud de la lámina, generalmente terminando en un diente; células apicales conspicuamente cortas y más anchas que las células mediales, células mediales oblongo-lineales. Dioicas o autoicas. Periquecios laterales. Setas largas, lisas hasta rugosas o escabrosas. Cápsulas inclinadas hasta horizontales, rara vez subpéndulas, urna ovoide-cilíndrica; opérculo largo-cónico rostrado; peristoma doble, exostoma con 16 dientes, estrías finamente cruzadas; membrana basal del endostoma alta, con 16 segmentos, carinados y perforados, cilios presentes. Caliptra cuculada, lisa y desnuda. Esporas esféricas y lisas.
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