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Published In: Journal of the Linnean Society, Botany 12: 107. 1869. (J. Linn. Soc., Bot.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 4/12/2011)
Acceptance : Accepted
Project data     (Last Modified On 4/12/2011)
Discussion:

This genus is recognized by its bizarre sporophyte and calyptra. In form the seta and capsule are nearly identical to the operculum, described (Robinson 1990) as "an inverted operculum . . . ." The calyptra is mitrate, generally ciliate-fringed, and has a rostrum as long as the operculum, capsule and seta combined. When detached, the calyptra (the operculum generally remains within the calyptra) looks very much like a sporophyte. The gametophytes of Ochrobryum resemble those of Leucobryum, but its leaves have a single dorsal and ventral leucocyst layer throughout, a feature also present in L. martianum and L. subobtusifolium. It is also distinctive in its asexual reproduction by means of globose propagula and in having apical leaf chlorocysts subdivided to form chains of rounded to quadrate cells (see Eddy 1990, Fig. 185 C). The genus has recently been revised (Allen 1992).


 

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Ochrobryum Mitt., J. Linn. Soc., Bot 12: 107. 1869.

Plants small, 3–20 mm high, pale green to whitish; stems erect, simple or forked, central strand absent. Leaves erect-incurved, erect-spreading to flexuous, channeled; margins entire; costa in cross section at base with a median row of quadrate chlorocysts and single layers of dorsal and ventral leucocysts, at leaf apex chlorocysts hypocentric, chlorocysts short in the upper region of the leaf, forming chains of rounded or quadrate cells; lamina narrow, restricted to the lower half of the leaf; alar cells not differentiated. Asexual reproduction by means of globose propagula clustered on short stalks on dorsal surface of leaf towards the apex or in leaf axils. Dioicous. Setae short; capsules immersed to shortly exserted, hemispheric to obconic, wide-mouthed when dry; annuli non-revoluble; stomata absent; opercula long-rostrate; peristome absent. Calyptrae long-rostrate, the rostrum more than twice the operculum length, mitrate, laciniate or ciliate-fringed at base.

 

 
 
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