Mag. Encycl. 5: 304. 1804
Species 6 (3 in the flora).
Hedwigia in North America was until recently considered as a single species, with numerous varieties and forms (G. N. Jones 1933). Although a hair-point is often ascribed to species of Hedwigia, the acumen may be elongated but there is never a hairlike process as in Pseudobraunia. Long, multicellular cilia on leaf margins are rare among bryophytes (B. Goffinet et al. 2008), but are present on the perichaetial leaves in H. ciliata and H. stellata.
The type of Hedwigia integrifolia P. Beauvois was collected in North America. The name was used for a widespread species now considered Braunia imberbis (Smith) N. Dalton & D. G. Long. The type of H. integrifolia was examined by N. J. Dalton et al. (2012) and found unrelated to B. imberbis. Hedwigia integrifolia was synonymized with Hedwigidium imberbe (Smith) Bruch & Schimper by W. J. Hooker and T. Taylor (1818). Presently the application of the name H. integrifolia is awaiting further study, although G. N. Jones (1933) considered H. integrifolia a synonym of H. ciliata (B. H. Allen 2010).
|1||Medial and distal laminal cells with papillae (1-)2-4 per cell, simple, sessile, or low-stalked, variously branched; perichaetial leaf margins ciliate distally; apical laminal cell obtuse to truncate, multipapillose-coronate, short-rhomboidal, (40-)50-75(-80) µm.||Hedwigia ciliata|
|1||Medial and distal laminal cells with papillae usually 1 per cell, stalked, strongly, irregularly branched; perichaetial leaf margins ciliate or entire distally; apical laminal cell sharply pointed, smooth or papillose, long-linear, (80-)120-175(-200) µm||> 2|
|2||Leaf apices wide-spreading to squarrose when dry; laminal cells in hyaline area with some papillae large, spinose, among shorter papillae; papillae on abaxial leaf surface with branches of unequal lengths; perichaetial leaf margins long-ciliate distally.||Hedwigia stellata|
|2||Leaf apices erect when dry; laminal cells in hyaline area with papillae low, simple, in lines; papillae on abaxial leaf surface with branches usually of equal lengths; perichaetial leaf margins entire.||Hedwigia detonsa|
|Author||Patricia M. Eckel +|
|Authority||P. Beauvois +|
|Distribution||Nearly worldwide. +|
|Etymology||For Johann Hedwig, 1730 – 1799, German bryologist and physician +|
|Illustration copyright||Flora of North America Association +|
|Illustrator||Patricia M. Eckel +|
|Publication title||Mag. Encycl. +|
|Publication year||1804 +|
|Source xml||https://firstname.lastname@example.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V28/V28 132.xml +|
|Taxon family||Hedwigiaceae +|
|Taxon name||Hedwigia +|
|Taxon parent||Hedwigiaceae +|
|Taxon rank||genus +|
|Volume||Volume 28 +|