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Published In: Species Muscorum Frondosorum 51–56, pl. 8. 1801. (Sp. Musc. Frond.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 9/27/2009)
Acceptance : Accepted
Project Data     (Last Modified On 10/7/2017)
Plant Category: Mosses

Notes     (Last Modified On 10/7/2017)
Notes:
Splachnum contains nine species; two species recorded for the Neotropics. The genus is readily recognized by the inflated, pale rose or whitish-green colored hypophysis, additional combined features include long-acuminate, elliptical-lanceolate or oblanceolate leaves, often weakly bordered margins, and peristome teeth fused into 8 paired.
 
Splachnum contiene nueve especies; dos especies registradas en el Neotrópico. El género se reconoce fácilmente por las hipófisis infladas, de color rosa pálido o verde-blancuzco, características adicionales combinadas incluyen las hojas largo-acuminadas, elíptico-lanceoladas u oblanceoladas, a menudo márgenes débilmente bordeados y dientes del peristoma fusionados en 8 pares.

 

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Plants forming dense tufts, glossy pellucid green. Stems to ca. 1 cm tall, few branched, tomentose below; central strand present. Leaves small below, distally crowded and larger, ± crispate or contorted when dry, erect-spreading when wet, elliptical-lanceolate or oblanceolate, 3-5.5 mm long, to 2 mm wide, distally folded, apex long acuminate; margins plane, entire to sharply serrate distally; costa short excurrent; median cells large, hexagonal to hexagonal-fusiform; lower and basal cells long rectangular; alar region undifferentiated; marginal cells oblong-rectangular. Autoicous. Perigonia on short branches; leaves with an oval base and distal wide-spreading, lanceolate limb. Perichaetia terminal; leaves similar. Setae elongate, 5-40 mm long, slender, flexuose or not, pale whitish-green to pink or dark bright red, smooth, twisted when dry. Capsules erect, short to long exserted, differentiated between a short urn and inflated neck (hypophysis), urn cylindrical, 0.6-1.4 mm long, brown; exothecial cells strongly collenchymatous, oblate-rectangular or subquadrate; hypophysis (neck) pyriform or only slightly inflated, 1.5-6 mm long, to 4 mm wide, white to pale pink or red; stomata on distal hypophysis, superficial; columella often shortly exserted when dry; opercula convex- or conic-apiculate; peristome teeth fused in 8 pairs, papillose, reflexed when dry. Calyptrae mitrate-campanulate, ca. 1.2 mm long. Spores spherical or oval, smooth or lightly papillose.

 

Plantas formando manojos densos, verde brillantes pelúcidas. Tallos de hasta 1 cm de alto, poco ramificados; cordón central presente; tomentosos en la porción inferior. Hojas pequeño abajo, distalmente agregadas y mayores, ± crispas o contortas en seco, erecto-extendidas en húmedo, elíptico-lanceoladas u oblanceoladas, 4-5.5 mm de largo, hasta 2 mm de ancho, distalmente plegadas, ápices bastante largo-acuminados; márgenes planos, enteros; costa simple, corto-excurrente; células mediales grandes, hexagonales hasta hexagonal-fusiformes, 80-140 µm de largo, hasta 40 µm de ancho; células inferiores y basales largo-rectangulares; región alar indiferenciada; células del margen oblongo-rectangulares. Autoicas. Perigonios en ramas cortas, hojas distalmente lanceoladas y ampliamente extendidas desde una base ampliamente ovada. Periquecios terminales; hojas similares. Setas alargadas, 20-40 mm de largo, ± delgadas, pálidas hasta rojo oscuras brillantes, lisas, torcidas en seco. Cápsulas erectas, diferenciado entre una urna corta y cuello muy inflado (hipófisis), urna cilíndrica, 1.1-1.4 mm de largo, pardo oscuras; células exoteciales marcadamente colenquimatosas, oblato-rectangulares o subcuadradas; hipófisis piriforme inflada (cuello), 4-6(7) mm de largo, hasta 4 mm de ancho, color blanco a rosado pálido o rojo; estomas en la hipófisis distal, superficiales; columela a menudo brevemente excerta en seco; opérculo convexo o cónico, apiculado; peristoma con dientes en 8 pares, papilosos, reflexos en seco. Caliptra mitrada-campanulada, ca. 1.2 mm de largo. Esporas esféricas u ovales, 8-9 µm de diámetro, lisas o finamente papilosas.

 

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1. Hypophysis equal to or less than the urn width, only slightly inflated … S. pensylvanicum
1. Hypophysis several times broader than the urn, conspicuously inflated, globose and tapered below … S. weberbaueri
 
1. Hipófisis igual o menos ancha que la urna, solo ligeramente inflada … S. pensylvanicum
1. Hipófisis varias veces más ancha que la urna, conspicuamente inflada, globosa y atenuada abajo … S. weberbaueri
 
 
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