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Published In: Bryologia Europaea 1: 95 (fasc. 33–36. Mon. 1). 1846. (Bryol. Eur.) Name publication detail

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

Rhabdoweisia, revised by Lawton (1961), is similar to Amphidium in its leaf areolation, cell ornamentation, costal cross section, cucullate calyptrae, ovoid, strongly ribbed capsules, and the absence of a central strand in the stem. The two genera have been treated together in the Rhabdoweisiaceae (Anderson and Crum 1959). The peristome of Rhabdoweisia deviates in no significant way from that found in the Dicranales (Edwards 1979) and clearly Rhabdoweisia belongs in that order. Lewinsky (1976) placed Amphidium near the Orthotrichaceae because of the morphological similarity of its young sporophytes to those of Orthotrichum. However, because Lewinsky did not compare the morphology of young Rhabdoweisia sporophytes with those of Amphidium, the extent of the relationship between the two genera remains open to question.


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Rhabdoweisia B.S.G., Bryol. Eur. 1: 97. 1846.


Plants small, in dense tufts or cushions, green above and brown below; stems without central strand. Leaves spreading when moist, strongly crisped when dry, narrowly linear lanceolate, keeled, acuminate; costa ending near apex, in cross section with well developed guide cells and dorsal stereid band, ventral stereid band absent or weakly developed; upper leaf cells rounded quadrate, smooth; basal cells rectangular, hyaline; alar cells undifferentiated. Autoicous. Setae elongate, erect; capsules exserted, ovoid, 8-ribbed when dry; peristome single of 16 undivided teeth; opercula obliquely rostrate. Calyptrae cucullate.

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