View source for Mielichhoferia

{{Treatment/ID
|accepted_name=Mielichhoferia
|accepted_authority=Nees & Hornschuch in C. G. D. Nees et al.
|publications={{Treatment/Publication
|title=in C. G. D. Nees et al., Bryol. Germ.
|place=2(2): 179, plate 41. 1831
|year=1831
}}
|basionyms=
|synonyms=
|hierarchy=Mielichhoferiaceae;Mielichhoferia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Mielichhoferiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Mielichhoferia]]</div></div>
|etymology=For Mathias Mielichhofer, 1772 – 1847, Austrian collector of generitype specimen
|volume=Volume 28
|mention_page=page 10, 11, 141, 192, 662, 666
|treatment_page=page 191
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>small to medium-sized, occasionally large, usually in ± compact turfs. <b>Stems</b> 0.1–3 cm, bearing lateral gametangia when fertile. <b>Leaves</b> erect to ± spreading, narrowly lanceolate to ovate-lanceolate, 0.5–1.3 mm; base not decurrent; margins plane [rarely recurved], finely serrate to serrulate near apex, rarely entire; apex acute or short-acuminate; costa ending well before apex to subpercurrent; distal medial laminal cells hexagonal to rhomboidal; marginal cells undifferentiated. <b>Specialized</b> asexual reproduction absent or rare, by axillary bulbiform gemmae. <b>Sexual</b> condition dioicous or synoicous; perigonia and perichaetia on short lateral branches; perigonial leaf apex short-acute; perichaetial leaves usually smaller than vegetative leaves, lanceolate to narrowly linear-lanceolate. <b>Seta</b> single, color various, straight or bent. <b>Capsule</b> erect or inclined to 30°, narrowly cylindric to pyriform, 1–4 mm, neck shorter than urn; exothecial cells near mouth in 1–3 rows, medial cell walls straight or slightly sinuate; stomata superficial; annulus revoluble; operculum convex, short- to long-conic; peristome single or double, appearing single, usually 4:2:4; exostome, when present, white to hyaline, teeth narrowly acute- or blunt-triangular, sometimes irregular, often reduced or absent, weakly or not trabeculate, papillose; endostome basal membrane rudimentary or scarcely exceeding capsule rim, segments sometimes absent, or narrow, slightly keeled, not perforate, cilia absent.</span><!--

-->{{Treatment/Body
|distribution=North America;Mexico;South America;Europe;Africa;Pacific Islands (New Zealand);Australia.
|discussion=<p>Species ca. 45 (3 in the flora).</p><!--
--><p><i>Mielichhoferia</i> is characterized by perichaetia and perigonia borne on short lateral branches, perichaetial leaves that are often smaller than the vegetative leaves with cells relatively more lax, and frequent peristome reduction. The leafy stems themselves are much like those of a small <i>Pohlia</i>.</p><!--
--><p><i>Mielichhoferia</i> is especially diverse in South America and is highly variable in peristome development: double with well-developed exostome and endostome, single and endostomial, double but with the exostome short and barely exceeding the capsule rim, or double with the endostome reduced to an inconspicuous membrane adherent to the exostome teeth (two North American species). Species of <i>Mielichhoferia</i> are gametophytically similar to small species of <i>Pohlia</i>, though they can be distinguished by a characteristic whitish color and very small size. The main features distinguishing the two genera are gametangia borne on short lateral shoots in <i>Mielichhoferia</i> and terminal in <i>Pohlia</i>. The perichaetial leaves are as long as or longer than vegetative leaves in <i>Pohlia</i> but are smaller, with more lax cells and shorter costa in <i>Mielichhoferia</i>. <i>Mielichhoferia</i> and <i>Pohlia</i> grow in similar habitats.</p>
|tables=
|references={{Treatment/Reference
|id=shaw1984c
|text=Shaw, A. J. and H. A. Crum. 1984. Peristome homology in Mielichhoferia with a taxonomic account of the North American species. J. Hattori Bot. Lab. 57: 363–381.
}}{{Treatment/Reference
|id=shaw1994a
|text=Shaw, A. J. 1994. Systematics of Mielichhoferia (Bryaceae: Musci) II. Morphological variation among disjunct populations of M. elongata and M. mielichhoferiana. Bryologist 97: 47–55.
}}{{Treatment/Reference
|id=shaw1994b
|text=Shaw, A. J. and P. E. Rooks. 1994. Systematics of Mielichhoferia Nees & Hornsch. (Bryaceae: Musci) I. Morphological and genetic analyses of M. elongata and M. mielichhoferiana. Bryologist 97: 1–12.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Sexual condition synoicous; peristome single; exostome absent; endostome segments present.
|[[Mielichhoferia shevockii|Mielichhoferia shevockii]]
|-id=key-0-1
|1
|Sexual condition dioicous; peristome double; exostome present; endostome segments absent
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Plants dark green, dull; distal medial laminal cell walls moderately thick.
|[[Mielichhoferia mielichhoferiana|Mielichhoferia mielichhoferiana]]
|-id=key-0-2
|2
|Plants pale whitish, somewhat glossy; distal medial laminal cell walls thin.
|[[Mielichhoferia elongata|Mielichhoferia elongata]]
|}
</div></div><!--

-->{{#Taxon:
name=Mielichhoferia
|author=
|authority=Nees & Hornschuch in C. G. D. Nees et al.
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Mielichhoferiaceae
|distribution=North America;Mexico;South America;Europe;Africa;Pacific Islands (New Zealand);Australia.
|reference=shaw1984c;shaw1994a;shaw1994b
|publication title=in C. G. D. Nees et al., Bryol. Germ.
|publication year=1831
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V28/V28_305.xml
|genus=Mielichhoferia
}}<!--

-->[[Category:Treatment]][[Category:Mielichhoferiaceae]]