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!Dicranodontium denudatum (Brid.) E. Britton 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: North American Flora 15(2): 151. 1913. (N. Amer. Fl.) Name publication detailView in Biodiversity Heritage Library

Project Name Data (Last Modified On 10/18/2013)
Acceptance : Accepted
Project data     (Last Modified On 10/18/2013)
Nomenclature: D. denudatum (Brid.) Britt. ex Williams, N. Amer. Fl. 15(2): 151. 1913.
Dicranum denudatum Brid., Musc. Recent. Suppl. 1: 184. 1806.
Dicranodontium millspaughii E. G. Britt. ex Millsp., Bull. W. Va. Exp. Sta.     24, 2(12): 488. 1892.
Distribution: On moist, shaded rock surfaces or in crevices; possibly occurring in Mexico; Guatemala; northern and central Europe, Siberia, and Japan; Hawaii; southeastern Alaska to Oregon; Newfoundland; Maine, New York, Ohio, south to Georgia and northern Alabama. Plants from Central America probably belong to D. meridionale Bartr. or D. pulchroalare Broth. and may indeed belong to Campylopus. A collection from Michoac‡n (Frye 2901, MICH), so named by Bartram and included in the flora by Crum (1951), belongs to Campylopus instead, and Webster et al. 270 (TENN) from Oaxaca is also a Campylopus.
Discussion: The shiny, setaceous leaves are falcate-secund and flexuose. They are readily deciduous, leaving the stems partially denuded.
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Plants in soft, silky, yellow-brown to dark-green, radiculose tufts 1-4.5 cm high. Leaves often deciduous, loosely erect and flexuose to ± falcate-secund, 2.5-8 mm long, subtubulose from near the base, strongly auriculate and narrowly lanceolate, gradually narrowed to a long, ± rough, setaceous point; margins closely serrulate in the upper 1/3-1/2 (occasionally subentire), entire below; costa 1/3-1/2 the width of the leaf base, (70-)150-210 µm wide below, long-excurrent; alar cells inflated in well-marked, hyaline or reddish auricles; lower basal cells short-rectangular, ± enlarged and extending upward for some distance near the costa, rather pale, usually firm-walled, sometimes ± pitted, narrower toward the margins; upper basal cells firm, rectangular, becoming linear toward the shoulders; cells of upper lamina rectangular to linear, generally elongate. Setae about 1 cm long, erect-sinuose when dry, ± curved or cygneous when moist; urn of capsule ca. 1.5 mm long; operculum about as long as the urn. Spores ca. 11-12 µm.


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