Tropicos | Name - Mielichhoferia Hornsch.

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Mielichhoferia Hornsch.

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Project Name Data (Last Modified On 11/30/2009)

Acceptance : Accepted

Project Data (Last Modified On 10/28/2017)

Plant Category: Moss

Notes (Last Modified On 10/28/2017)

general taxon notes:

The genus is gametophytically similar to Schizymenium, however, the peristome has a well developed exostome, with the teeth often paired, and endostome lacking or rudimentary. The earlier concept of Mielichhoferia is restricted to accommodate species previously placed in Haplodontium with the majority of what was recognized as Mielichhoferia now placed in Schizymenium. The many (nearly all?) of the taxa listed below can be classified as “status unknown.” The following key to Mielichhoferia and Schizymenium based on Shaw (1985).

1. Plants paroicous, autoicous, rarely synoicous; peristome usually single and endostomial, rarely absent or double; exostome teeth, when present, smooth … Schizymenium

1. Plants dioicous; peristome single and exostomial or double with long exostome teeth and an endostomial membrane not differentiated into segments and cilia; exostome teeth reticulate, papillose or striate … Mielichhoferia

Este género tiene el gametofito similar a Schizymenium, sin embargo, el peristoma tiene un exostoma bien desarrollado, dientes a menudo pareados y endostoma ausente o rudimentario. El concepto anterior de Mielichhoferia está restringido a las especies previamente localizadas en Haplodontium, la mayoría de las cuales fueron reconocidas como Mielichhoferia y actualmente están localizadas en Schizymenium.

1. Plantas paroicas, autoicas, raras veces sinoicas; peristoma generalmente simple y sólo representado por el endostoma, rara vez ausente o doble; dientes del exostoma, cuando presentes, lisos … Schizymenium

1. Plantas dioicas; peristoma simple y exostomial o doble con dientes del exostoma largos y la membrana del endostoma no diferenciada en segmentos y cilios; dientes del exostoma reticulados, papilosos o estriados … Mielichhoferia

The status of the following names is unknown:

Mielichhoferia chlorocarpa Herzog, Hedwigia 74: 104. 1935[1934]. Syntypes: Bolivia. An Felsen der Abra de San Benito (Prov. Cochabamba), 3900 m, Herzog 237; Curahuara, Troll 59.

Mielichhoferia lonchocarpa Müll. Hal., Nuovo Giorn. Bot. Ital. n. s. 4: 27. 1897.

Mielichhoferia aurifolia Müll. Hal., Nuovo Giorn. Bot. Ital. n.s. 4: 29. 1897. Type: Bolivia. Sin. loc. & leg. Possible type data: Cochabamba, prope Choquecamata, Germain.

Mielichhoferia longipes Müll. Hal., Nuovo Giorn. Bot. Ital. n. s. 4: 27. 1897. Type: Bolivia. Sin. loc. & leg. Possible type data: Cochabamba, prope Choquecamata, Germain.

Mielichhoferia macrodonta Broth., Biblioth. Bot. 87: 76. 1916. Type: Bolivia. Torreni-Tanakaka, 3800-4000 m, Herzog 3751.

Mielichhoferia minutifolia Müll. Hal., Nuovo Giorn. Bot. Ital. n. s. 4: 28. 1897. Type:. Bolivia. Sin. loc. & leg. Possible type data: Cochabamba, prope Choquecamata, Germain.

Mielichhoferia modesta Müll. Hal., Nuovo Giorn. Bot. Ital. n. s. 4: 29. 1897. Type: Bolivia Ingenio del Oro, 10,000 ped. alta, Martio 1886, Rusby.

Mielichhoferia secundifolia Herzog, Beih. Bot. Centralbl. 26(2): 71. 1909. Type: Bolivia. An Felsen bei der Abra de San Benito (Prov. Cochabamba), ca. 3900 m, Januar 1908, Herzog.

Mielichhoferia sericea Schimp. ex Müll. Hal., Nuovo Giorn. Bot. Ital. n.s. 4: 27. 1897, nom. illeg. Based on Bolivia. Chuchu, Mandon.

Haplodontium seriolum Müll. Hal., Linnaea 40: 284. 1879. Mielichhoferia seriola (Müll. Hal.) Paris, Index Bryol. 817. 1897. Type: [Bolivia?] In declivitate Cordillerarum Boliviana, 1873, Lorentz s.n.

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Plants small, forming short tufts. Stems erect, to 5 mm tall, few branched, radiculose below. Leaves imbricate, erect to ± appressed, ovate-short lanceolate, to 0.8 mm long, apex acute; margins plane or slightly reflexed below, weakly serrulate near apex; costa ± strong, subpercurrent to percurrent; median cells narrowly long hexagonal to fusiform-hexagonal, smooth, thin-walled; lower and basal cells oblong-short rectangular, lax; marginal cells linear. Dioicous. Perichaetia appearing lateral by innovation. Setae to 10 mm long, smooth, usually flexuose. Capsules erect to suberect, urn pyriform, to 2 mm long(including neck), neck distinct, equal to or shorter than urn; annulus revoluble, in 3-4 rows; operculaapiculate or conic-convex; peristomesingle or double, exostome teeth usually 8 paired, hyaline or yellowish at base, papillose; endostome lacking or rudimentary. Spores spherical, papillose.

Plantas pequeñas, formando manojos cortos. Tallos erectos, hasta 5 mm de alto, poco ramificados, radiculosos abajo. Hojas imbricadas, erectas hasta ± adpresas, corto-ovadas lanceoladas, hasta 0.8 mm de largo, ápices agudos; márgenes planos o escasamente reflexos hacia la base, débilmente serrulados cerca al ápice; costa ± fuerte, subpercurrente hasta percurrente; células mediales angostamente largo-hexagonales hasta fusiforme-hexagonales, lisas con paredes delgadas; células inferiores y basales corto-oblongo rectangulares, laxas; células del margen lineales. Dioicas. Periquecios aparentemente laterales por yemas. Setas hasta 10 mm de largo, lisas, generalmente flexuosas. Cápsulas erectas hasta suberectas, urna piriforme, hasta 2 mm de largo (incluyendo el cuello), cuello conspicuo, igual o más cortas que la urna; anillo revoluble, en 3-4 filas; opérculo apiculado o cónico-convexo; peristoma simple o doble, exostoma con 8 dientes generalmente pareados, hialinos o amarillentos en la base, papilosos; endostoma ausente o rudimentario. Esporas esféricas, papilosas.