Difference between revisions of "Pilosium chlorophyllum"
in H. G. A. Engler et al., Nat. Pflanzenfam. ed. 2, 11: 399. 1925.
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| − | |accepted_authority=(Hornschuch) Müller Hal. ex Brotherus | + | |accepted_authority=(Hornschuch) Müller Hal. ex Brotherus |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in H. G. A. Engler et al., Nat. Pflanzenfam. ed. | |title=in H. G. A. Engler et al., Nat. Pflanzenfam. ed. | ||
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name=Pilosium chlorophyllum | name=Pilosium chlorophyllum | ||
| − | |authority=(Hornschuch) Müller Hal. ex Brotherus | + | |authority=(Hornschuch) Müller Hal. ex Brotherus |
|rank=species | |rank=species | ||
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|publication year=1925 | |publication year=1925 | ||
|special status=Illustrated | |special status=Illustrated | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V28/V28_738.xml |
|genus=Pilosium | |genus=Pilosium | ||
|species=Pilosium chlorophyllum | |species=Pilosium chlorophyllum | ||
Latest revision as of 21:37, 5 November 2020
Stems 6 cm, 2–4 mm wide across leafy stem. Leaves dorsal 1.3–1.6 × 0.6–0.9 mm, alar cells few, weakly differentiated, 12–24 × 9–12 µm, walls not porose; lateral 1.5–2 × 0.6–1 mm, costa extending short distance beyond base, alar cells many, strongly differentiated, 24–89 × 14–28 µm, walls porose; medial laminal cells 89–146 × 7–12 µm. Perichaetia with leaves deeply erose. Seta 1.5–1.8 cm. Capsule 0.8–1.2 mm; operculum 0.4–0.6 mm.
Phenology: Capsules mature winter.
Habitat: Forested sheltered gorges, rotten logs, exposed tree roots
Elevation: moderate elevations (600-800 m)
Distribution
N.C., Mexico (Quintana Roo), West Indies, Central America, n South America.
Discussion
Pilosium chlorophyllum is rarely confused with other species in Stereophyllaceae. The species is distinctive because of its glossy, complanate-foliate plants, and dimorphic leaves, the dorsal ones symmetric and oblong-ovate, with neither a costa nor a distinctive alar region of differentiated cells, the lateral ones cultriform and oblong-lanceolate, with a short, weak costa scarcely reaching 1/3 leaf length, and a large area of enlarged, pigmented alar cells on one side of the costa. The cernuous, short-cylindric capsules have collenchymatous exothecial cells and the spores, 7–9 µm, are smaller than in other members of the family.
Selected References
None.