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Ditrichum pallidum (Hedwig) Hampe
Trichostomum pallidum; Ditrichum currituckii

Life   Plantae   Bryophyta   Ditrichaceae   Ditrichum

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Kingdom Plantae  
 Phylum Bryophyta  
 Class Bryopsida  
 Order Dicranales  
 Family Ditrichaceae  
 Genus Ditrichum  
  Ditrichum pallidum    (Hedw.) Hampe, 1867 
Provider: Chiang, Tzen-Yuh 
hierarchy tree    download xml    download txt    Chinese Page    
Synonyms: Ditrichum curritucki Ditrichum longipes Trichostomum pallidum   details
Citation: Allen, B. H. 1987. Mosses from the state of Maine. Evansia 4: 17–20. Anderson, L. E., H. A. Crum & W. R. Buck 1990. List of mosses of North America north of Mexico. Bryologist 93: 448–499. Born, S., J.-P. Frahm & T. Pócs 1993. Taxonomic results of the BRYOTROP Expedition to Zaire and Rwanda. 26. A new checklist of the mosses of Central Africa. Trop. Bryol. 8: 223–273. Churchill, S. P. 1985. A synopsis of the Kansas mosses with keys and distribution maps. Univ. Kansas Sci. Bull. 53: 1–64.
Name Code: 200249
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https://plants.usda.gov/java/profile?symbol=DIPA22 ---> http://plants.usda.gov/core/profile?symbol=DIPA22
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Ditrichum pallidum (Hedw.) Hampe
pale ditrichum moss

Image of Ditrichum pallidum

General Information
Symbol: DIPA22
Group: Moss
Family: Ditrichaceae
Growth Habit : Nonvascular
Native Status : NA   N
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green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
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Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   


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©Michael Lüth. Provided by Michael Lüth . Lüth, M. 2004. Pictures of bryophytes from Europe [CD-ROM] . Published by the author. Usage Requirements .

©Michael Lüth. Provided by Michael Lüth . Lüth, M. 2004. Pictures of bryophytes from Europe [CD-ROM] . Published by the author. Usage Requirements .

©Michael Lüth. Provided by Michael Lüth . Lüth, M. 2004. Pictures of bryophytes from Europe [CD-ROM] . Published by the author. Usage Requirements .

©Michael Lüth. Provided by Michael Lüth . Lüth, M. 2004. Pictures of bryophytes from Europe [CD-ROM] . Published by the author. Usage Requirements .



Symbol Scientific Name
DICU5 Ditrichum currituckii Grout


Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Division Bryophyta – Mosses
Subdivision Musci
Class Bryopsida – True mosses
Subclass Bryidae
Order Dicranales
Family Ditrichaceae
Genus Ditrichum Hampe – ditrichum moss
Species Ditrichum pallidum (Hedw.) Hampe – pale ditrichum moss

Subordinate Taxa

This plant has no children

Legal Status

Wetland Status

Interpreting Wetland Status

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Integrated Taxonomic Information System (DIPA22)



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover

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FNA | Family List | FNA Vol. 27 | Ditrichaceae | Ditrichum

7. Ditrichum pallidum (Hedwig) Hampe, Flora. 50: 182. 1867.

Trichostomum pallidum Hedwig, Sp. Musc. Frond., 108. 1801; Ditrichum currituckii Grout

Plants rather small, in silky green to yellowish green, loose to compact tufts. Stems short, to 0.5(-1) cm, usually simple. Leaves erect-spreading to subsecund, flexuose-contorted when dry, to 7 mm; from a short ovate-lanceolate and ± sheathing base gradually or rather shortly narrowed to an elongate subula, lamina 2-stratose distally; margins erect, becoming serrulate towards the apex, 1-stratose proximally, 2-stratose in the subula; costa rather thin and narrow at the base, broader distally and occupying most of the base of the subula, excurrent, in section with a broad band of guide cells and shallow adaxial and abaxial stereid bands; cells of the leaf base rectangular to oblong-hexagonal, narrowed towards the margin and forming a ± distinct hyaline zone, elongate-rectangular in distal leaf base and subula. Specialized asexual reproduction unknown. Sexual condition autoicous; perigonia axillary; perichaetial leaves shorter than stem leaves, the base not sheathing. Seta yellow or sometimes reddish brown near base, elongate, to 4 cm or occasionally longer, flexuose. Capsule suberect to somewhat inclined, yellow to brownish yellow, reddish brown with age, subcylindric, with a broadened base tapering gradually to a narrowed mouth, 1-2.5 mm, slightly asymmetric, weakly furrowed when dry and empty; operculum conic-rostrate, to about 0.8 mm; peristome 300-800 µm, pale brown to yellowish orange, 2-fid to a very short basal membrane, densely spiculose throughout. Calyptra long-cucullate. Spores rounded to obscurely tetrahedral, 15-30 µm, coarsely and sparsely papillose, brown.

Capsules mature winter-summer (Feb-Jul). Sandy or clay soil, rather dry, open or partly shaded habitats; low elevations; N.B., N.S., Ont., Que.; Ala., Ark., Conn., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., Vt., W.Va., Wisc.; Europe; e Asia (Japan); c Africa.

When Ditrichum pallidum is fruiting, the long, yellow setae are distinctive. The slightly asymmetric capsule and the long, spiculose peristome teeth are similar to those of D. difficile (Duby) Fleischer, a widespread, common species occurring in Mexico, Central and South America as well as elsewhere throughout the world, and D . rhynchostegium . However, the spores of all three species are easily distinguished. Spores of D. difficile are finely papillose-verrucose and 12-18(-20) µm; those of D. rhynchostegium are vermicularly papillose-verrucose and 11-15(-18) µm; those of D. pallidum are larger, 15-30 µm, and the exine ornamentation coarsely and openly papillose.

Herbarium specimens of Ditrichum pallidum and D. rhynchostegium are sometimes misidentified. If fruiting, the orange to reddish seta of D. rhynchostegium will immediately distinguish it from D. pallidum with its yellowish seta. Also, spores of D. rhynchostegium have a distinctly vermicular ornamentation and are smaller. The operculum of D. pallidum is about half the length of that of D. rhynchostegium . Vegetatively, plants of D. pallidum have short stems and the leaf base is often ovate to ovate-lanceolate, being gradually narrowed to the subula. On the other hand, plants of D. rhynchostegium have longer stems and the leaf base is oblong-ovate and abruptly narrowed to the subula. L. E. Anderson and V. S. Bryan (1958) discussed the similarity of D. currituckii and D. pallidum , but maintained them as distinct species. H. A. Crum and Anderson (1980-1983) considered D. currituckii to be a variant form of D. pallidum having shorter capsules and peristomes, slightly shorter leaves with the costa somewhat broader at the base. The morphological and cytological differences were considered by Crum and Anderson (1981) to be insufficient to warrant separation.

Updated: 2020-06-03 13:00:30 gmt
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