Compilation
Dicranum heteromallum

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Name

Identification
Dicranum heteromallum Hedw. [family DICRANACEAE ] Verified by Not on sheet, Dicranella heteromalla (Hedw.) Schimp. [family DICRANACEAE ] (stored under name); Verified by Not on sheet, Isotype of Dicranum heteromallum Hedw. [family DICRANACEAE ] Verified by Not on sheet,
Related name
  • Dicranum longifolium
  • Dicranella heteromalla
  • Bryum heteromallum
  • Dicranum heteromallum

Flora

Entry for Dicranella heteromalla (Hedwig) Schimper [family ]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 27,
Names
Dicranella heteromalla (Hedwig) Schimper [family ], Coroll. Bryol. Eur., 13. 1856,
Dicranum heteromallum Hedwig [family ], Sp. Musc. Frond., 128. 1801
Campylopus henrici Renauld & Cardot [family ]
Dicranella fitzgeraldii Renauld & Cardot [family ]
Dicranella heteromalla var. latinervis Cardot & Thériot [family ]
Dicranella heteromalla var. orthocarpa (Hedwig) A. Jaeger & Sauerbeck [family ]
Dicranum orthocarpum Hedwig [family ]
Treatment Author(s)
Howard A. Crum†
Information
Plants to 10, rarely 40 mm, in rather shiny, yellow to dark green tufts. Leaves erect to falcate-secund, 2–3 mm, gradually narrowed from a lanceolate base to a subula largely occupied by the costa; margins erect, serrulate in the distal half of the limb; costa excurrent; cells in 1–3 rows above the leaf middle, rather short-rectangular, 11–14 × 4–7 µm. Sexual condition dioicous. Seta 5–15 mm, yellowish. Capsule 1–1.5 mm, suberect or sometimes inclined to horizontal, cylindric, often curved, asymmetric, tapered at the neck, usually ± obliquely furrowed and constricted on 1 side below an oblique mouth; annulus consisting of 1 row of small cells, persistent; operculum long-rostrate; peristome teeth 400–500 µm, divided 1/2 length distally. Spores 14–18 µm, faintly roughened.
Phenology
Capsules mature spring and summer.
Distribution
Central America (Costa Rica, Honduras, Panama)South America (Colombia)EuropeCentral America (Costa Rica, Honduras, Panama) Asia (China, e Himalayas, Japan)Central America (Costa Rica, Honduras, Panama) Asia (China, e Himalayas, Japan) Atlantic Islands (Canary Islands, Madeira)ne Africa.USA Ala.USA AlaskaUSA Ark.USA Calif.USA Conn.USA Del.USA Fla.USA Ga.USA IdahoUSA Ill.USA Ind.USA IowaUSA Kans.USA Ky.USA La.USA MaineUSA Md.USA Mass.USA Mich.USA Minn.USA Miss.USA Mo.USA Mont.USA Nebr.USA N.H.USA N.J.USA N.Y.USA N.C.USA OhioUSA Okla.USA Oreg.USA Pa.USA R.I.USA S.C.USA Tenn.USA Tex.USA Vt.USA Va.USA Wash.USA W.Va.USA Wis.Canada Alta.Canada B.C.Canada Man.Canada N.B.Canada Nfld. and Labr. (Nfld.)Canada N.S.Canada Ont.Canada P.E.I.Canada Que.
Discussion
Dicranella heteromalla is a common species recognized by suberect, obliquely furrowed capsules tapered toward the base and oblique at the mouth. The leaf margins are distinctly toothed above the middle. Reports for Oklahoma are by B. D. Mahler and W. F. Mahler (1980) and from Texas by E. Whitehouse and F. McAllister (1954).

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