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!Rhacopilopsis trinitensis (Müll. Hal.) E. Britton & Dixon Search in The Plant ListSearch in NYBG Virtual HerbariumSearch in Muséum national d'Histoire naturelleSearch in Type Specimen Register of the U.S. National HerbariumSearch in Virtual Herbaria AustriaSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical GardenSearch in Flora do Brasil 2020Search in Reflora - Virtual HerbariumSearch in Living Collections Decrease font Increase font Restore font

Published In: Journal of Botany, British and Foreign 60: 88. 1927. (J. Bot.) Name publication detailView in Biodiversity Heritage Library

Project Name Data (Last Modified On 3/20/2009)
Acceptance : Accepted
Project Data     (Last Modified On 10/29/2017)
Plant Category: Moss
EcoRegions: Amazon, Chiquitano, Yungas montane forest
Elevation: 0-500, 500-1000
Substrate: soil, rocks, leaf litter, logs, treelets and trees
Frequency: infrequent

Notes     (Last Modified On 10/29/2017)
general taxon notes:
Ecology. Amazon and Chiquitano forest to premontane Yungas forest; on trunk of trees, logs, humus, leaf litter, and over rocks. Elevation. 215-900 m. Distribution. Bolivia: Cochabamba, La Paz, Santa Cruz. World range: widespread in the Neotropics and tropical Africa.
Ecología. Bosque amazónico y Chiquitano hasta bosque premontano de Yungas; generalmente sitios sombreados, sobre troncos de árboles, troncos en descomposición, humus, hojarasca y sobre rocas. Altitud. 215-900 m. Distribución. Amplia distribución en el Neotrópico y áfrica tropical.
Rhacopilopsis trinitensis is characterized by the dimorphic lateral (slightly asymmetric, ovate- to oblong-lanceolate) and lower (smaller and narrower) median leaves, absent or short forked costa, few, round-rectangular alar cells.
Rhacopilopsis trinitensis (Müll. Hal.) E. Britton & Dixon se caracteriza por las hojas mediales laterales dimorfas (escasamente asimétricas, ovado- hasta oblongo-lanceoladas) e inferiores (menores y más angostas), costa ausente o bifurcada corta, pocas células alares, redondo-rectangulares.


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Plants small, forming mats, golden-yellow or brown. Stems spreading to subascending, irregularly pinnately branched; in cross-section outer 3-4 rows of stem cells small, thick-walled, rusty-red, inner cells larger, somewhat thin-walled, central strand absent; pseudoparaphyllia foliose, narrowly lanceolate, or subfilamentous; rhizoids clustered beneath stems, appearing smooth, reddish-brown. Leaves loosely complanate, dimorphic, upper median and lateral leaves asymmetric, broadly ovate- to oblong-lanceolate, 1-1.3 mm long, to 0.6 mm wide, apex abruptly short to long acuminate, apices often with a half twist; margins plane, reflexed at base, occasionally on one side distally, distal 1/3-2/3 serrulate, often sharply toothed near apex, occasionally subentire; costae short and forked or absent; median cells oblong-linear, 20-44 µm long, 3-4 µm wide, smooth, ± thick-walled; basal cells weakly porose; alar cells subquadrate to rectangular, few cells somewhat inflated, rectangular-rounded, to 30 µm long, 15 µm wide, occasionally dark golden-brown; underside leaves small, ± symmetric, ovate to ovate-lanceolate; median branch leaves similar, underside leaves lanceolate, often narrowly so, to 0.9 mm long, 0.2-0.3 mm wide. [Dioicous. Perichaetia lateral; leaves narrowly lanceolate, to 1.4 mm long, long acuminate. Sporophytes not observed.]


Plantas pequeñas, formando matas, amarillas-doradas o pardas. Tallos patentes hasta subascendentes, ramificaciones irregularmente pinnadas; en corte transversal del tallo 3-4 filas externas de células pequeñas, con paredes gruesas, rojas-oxidadas, células internas mayores, con paredes algo delgadas, cordón central ausente; pseudoparáfilos foliosos, angostamente lanceolados, o subfilamentosos; rizoides agregados en la parte baja de los tallos, de apariencia lisos, marrones-rojizos. Hojas laxamente complanadas, dimorfas, hojas superiores medias y laterales asimétricas, anchamente ovado- hasta oblongo-lanceoladas, 1-1.3 mm de largo, hasta 0.6 mm de ancho, ápices abruptamente corto- hasta largo-acuminados, ápices a menudo con una media vuelta; márgenes planos, reflexos en la base, ocasionalmente en un lado distalmente, 1/3-2/3 distales serrulados, a menudo marcadamente dentados cerca del ápice, ocasionalmente subenteros; costa corta y bifurcada o ausente; células medias oblongo-lineales, 20-44 µm de largo, 3-4 µm de ancho, lisas, con paredes ± gruesas; células basales débilmente porosas; células alares subcuadradas hasta rectangulares, pocas células algo infladas, redondas-rectangulares, hasta 30 µm de largo, 15 µm de ancho, ocasionalmente marrones-doradas oscuras; hojas ventrales pequeñas, ± simétricas, ovadas hasta ovado-lanceoladas; hojas de las ramas mediales similares, hojas inferiores lanceoladas, a menudo angostamente, hasta 0.9 mm de largo, 0.2-0.3 mm de ancho. [Dioicas. Periquecios laterales; hojas angostamente lanceoladas, hasta 1.4 mm de largo, largo-acuminadas. Esporofitos no observados.]



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