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Published In: Revue Bryologique, nouvelle série 1: 192. 1928. (Rev. Bryol., n.s.) Name publication detail

Project Name Data (Last Modified On 9/28/2009)
Acceptance : Accepted
Project Data     (Last Modified On 10/8/2017)
Plant Category: Mosses
General Reference:

Notes     (Last Modified On 10/8/2017)

A genus of four species distributed in the Americas and northern Asia. Three species in the Neotropics: J. arsenei (Thér.) Thér. is endemic to central Mexico, J. williamsii (Deguchi) Delgad. from the cordillera Occidental in Peru, and J. wrightii (Sull. in Gray) Thér. is recorded from Bolivia. Distinguishing features of the genus include the short obovate leaves, long to short hyaline hair point, unistratose or partially bistrastose lamina, upper laminal cells mostly oval to oblong-oval, somewhat lax quadrate basal cells, spiculose, perforate, sometimes segments fused, peristome teeth, and the erose or deeply lobed mitrate-campanulate calyptra.


Un género con cuatro especies de América y el norte de Asia. Tres especies están presentes en el Neotrópico. Las características que distinguen al género incluyen  hojas corto-obovadas, tricoma hialino largo hasta corto, lámina uniestratificada o parcialmente biestratificada, células superiores de la lámina generalmente ovales hasta oblongo-ovales, células basales cuadradas algo laxas, dientes del peristoma espiculados, perforados, algunas veces con segmentos fusionados, y caliptra  mitrada-campanulada, erosionada o profundamente lobada. En Bolivia se ha registrado sólo una especie, Jaffueliobryum wrightii (Sull. en Gray) Thér. Jaffueliobryum williamsii (Deguchi) Delgad. de Perú puede encontrarse en Bolivia, ésta difiere de J. wrightii en la costa percurrente hasta corto-excurrente, tricoma plano en el extremo de la hoja y lámina parcialmente biestratificada.


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1. Leaves percurrent to short excurrent, leaf hair point ± flat; in cross-section lamina partially bistratose and costa biconvex … J. williamsii

1. Leaves long excurrent, leaf hair point terete; in cross-section lamina unistratose and costa abaxially convex … J. wrightii



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