All Floras      Advanced Search
FNA Vol. 28 Page 543 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 28 | Hypnaceae | Hypnum

13. Hypnum jutlandicum Holmen & E. Warncke, Bot. Tidsskr. 65: 179. 1969.

Hypnum cupressiforme var. ericetorum Schimper in P. Bruch and W. P. Schimper, Bryol. Europ. 6: 101, plate 595, fig.. 1854

Plants small to medium-sized, pale green. Stems 4-10 cm, yellowish green to pale brown, creeping, ascending, or erect, , densely to sparsely pinnate, branches0.4-0.7+ cm; hyalodermis absent, central strand weak; pseudoparaphyllia filamentous to lanceolate, occasionally 2-fid. Leaves , straight to falcate-secund, ovate or oblong-lanceolate, gradually narrowed to apex, 1.7-2.2(-2.5) × 0.6-0.8(-0.9) mm; base not decurrent, not auriculate; margins plane or recurved basally, usually markedly serrulate distally; acumen short; costa double and short or indistinct; alar region not well defined; proximal cells somewhat enlarged and somewhat decurrent at extreme marginal cell; basal laminal cells shorter, broader than medial cells, light yellow or unpigmented, walls often porose; medial cells (60-)70-90(-100) × 3 µm. Sexual condition dioicous; . Sporophytes unknown in North America.

Terrestrial; low to moderate elevations (0-500 m); Nfld. and Labr. (Nfld.), N.S.; Europe; Atlantic Islands (Azores).

Hypnum jutlandicum is largely an amphi-Atlantic species that may occur in Alaska. The pale yellowish green, glossy, pinnate plants are very distinctive; they might be confused with H. imponens, but H. jutlandicum has yellow rather than red-brown stems and golden yellow rather than pale yellow leaves. The pseudoparaphyllia of H. imponens are more broadly foliose than the nearly filiform ones of H. jutlandicum. Distinction from H. cupressiforme is less apparent, but the usually more complanate pale green plants of H. jutlandicum are usually sufficient to separate it. Plants of H. jutlandicum have branches emerging in a horizontal plane; the pseudoparaphyllia are terminated by a 1-seriate tip of several elongate cells; the alar cells are usually strongly excavate and sometimes brown; and the distal laminal cells are subquadrate and 3-5(-7) along the margin.


Related Objects Image Gallery 
  • Distribution Map
  • Map
  • Illustration
  • Illustration

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |