Leptohymenium sharpii

(H. A. Crum & L. E. Anderson) W. R. Buck & H. A. Crum

Contr. Univ. Michigan Herb. 17: 64. 1990

EndemicIllustrated
Basionyms: Pterigynandrum sharpii H. A. Crum & L. E. Anderson Bryologist 70: 99. 1967,
Synonyms: Mittenothamnium sharpii (H. A. Crum & L. E. Anderson) W. R. Buck Taxiphyllum sharpii (H. A. Crum & L. E. Anderson) H. Robinson
Treatment appears in FNA Volume 28. Treatment on page 337.
Plants slender, 10 cm. Stems with elongate branches, filiform, innovations uncommon. Stem leaves moderately concave, 0.3–0.7 mm wide; alar cells few, subquadrate to oblong, 10–17 × 10 µm; laminal cells 30–80 × 4–5 µm; basal cells shorter, broader. Branch leaves erect to spreading, concave, 0.3–0.8 × 0.1–0.4 mm; base slightly decurrent; alar cells slightly differentiated. Inflorescences and sporophytes unknown.

Habitat: Wet, shaded rock in moist montane forests, near waterfalls or in deep ravines
Elevation: moderate to high elevations (500-1700 m)

Discussion

Known from about ten localities, Leptohymenium sharpii is endemic to the Southern Appalachian Mountains and is apparently rare. Although L. sharpii was originally described as a variety of Hylocomium splendens, the stems and branches lack paraphyllia. Over the past thirty years Leptohymenium sharpii has been moved from one genus to another. The occasionally sympodial innovations, decurrent leaves, and prorulate laminal cells suggest that it belongs in Leptohymenium. Finding plants with sporophytes would aid greatly in resolving generic placement of this puzzling species.

Lower Taxa

None.

Facts about "Leptohymenium sharpii"
AuthorJoseph R. Rohrer +
Authority(H. A. Crum & L. E. Anderson) W. R. Buck & H. A. Crum +
BasionymsPterigynandrum sharpii +
DistributionN.C. +, S.C. + and Tenn. +
Elevationmoderate to high elevations (500-1700 m) +
HabitatWet, shaded rock in moist montane forests, near waterfalls or in deep ravines +
IllustrationPresent +
Illustration copyrightFlora of North America Association +
IllustratorPatricia M. Eckel +
Publication titleContr. Univ. Michigan Herb. +
Publication year1990 +
Referencecrum1967a +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V28/V28 525.xml +
Special statusEndemic + and Illustrated +
SynonymsMittenothamnium sharpii + and Taxiphyllum sharpii +
Taxon familyHylocomiaceae +
Taxon nameLeptohymenium sharpii +
Taxon parentLeptohymenium +
Taxon rankspecies +
VolumeVolume 28 +