Lepidopilum ultramarginatum B. H. Allen
  • Monogr. Syst. Bot. Missouri Bot. Gard.


Cite taxon page as 'WFO (2020): Lepidopilum ultramarginatum B. H. Allen. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001039492. Accessed on: 02 Dec 2020'

General Information

Plants slender, 1–2 cm long, yellowish green to reddish yellow, in dense tufts. Primary stems prostrate and creeping. Secondary stems erect-ascending, sparsely branched, hyaline to yellowish when young, becoming reddish with age, somewhat complanate-foliate; stems in cross section lack-ing a hyalodermis, 1–3 layers of small, thick-walled sclerodermis cells, cortical cells enlarged, thin-walled, central strand absent; paraphyllia absent; pseudoparaphyllia absent; axillary hairs 2-celled, basal cell short-rectangular, reddish brown, upper cell oblong, hyaline; rhizoids usually on primary stems and at base of secondary stems, from clusters of initials abaxial to the leaf insertions at base of costae, smooth, reddish brown, not or sparsely and irregularly branched. Leaves distantly spaced, di-morphic, erect, flexuose-contorted when dry, erect-spreading, somewhat flattened when wet. Lateral leaves ovate-oblong to obovate, 2.0–2.5 mm long, asymmetric, abruptly short- to long-acuminate; margins sharply serrate to serrulate above, plane above, often broadly infolded on one side at base, strongly limbate, border at base consisting of 7–14 rows of elongate cells, border near apex of 4–8 rows of elongate cells; costae double, slender, 2/3–3/4 the leaf length, strongly diverging throughout, smooth at back, not projecting at the apices, one fork nearly always fused to the leaf border, occa-sionally both forks merged with margins; cells smooth, upper cells hexagonal to rhomboidal, 22–40 X 16–20 µm, firm-walled, porose, becoming fusiform to elongate-rhomboidal below, elongate-rectangular at base, sometimes porose; alar cells not differentiated. Dorsal leaves obovate, 2 mm long, symmetric; margins plane throughout; otherwise similar to lateral leaves. Asexual propagula not seen. Dioicous. Setae elongate, 10–12 mm long, red to reddish orange, spinose throughout. Capsules erect, ovoid to oblong-cylindrical, 1.0 mm long, neck well developed; exothecial cells reddish, oblate in 2–3 rows at mouth, those below subrectangular, firm-walled, not collenchymatous; stomata rudi-mentary, 3–6-celled, on neck; operculum and annulus not seen; peristome diplolepideous, exostome narrowly triangular, median furrow absent, dorsal (outer) surface broad, whitish yellow, lightly pa-pillose throughout, trabeculae thin, median lines faint, ventral (inner) surface narrow, 1/3 or less the width of the dorsal surface, yellowish, lightly papillose, deposition thick; endostome as long as

  • Provided by: [B].Moss Flora of Central America
    • Source: [
    • 1
    • ]. 

     Information From

    Daltoniaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Moss Flora of Central America
    http://www.mobot.org/MOBOT/Moss/centralamerica/welcome.shtml
    Moss Flora of Central America. Missouri Botanical Garden. Accessed on Jun. 2020.
    • B Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).