Sematophyllum demissum |
Sematophyllum subpinnatum |
|
---|---|---|
sematophyllum moss |
sematophyllum moss |
|
Habit | Plants small to medium-sized, green to yellow-green, glossy. | Plants small to medium-sized, green or yellowish, dull. |
Stems | 0.5–2.5 cm, branches sometimes ascending. |
0.3–0.6 cm, branches reclining. |
Leaves | straight or occasionally homomallous, oblong-ovate, tapering gradually to apex, 1–1.2 mm; margins reflexed proximally; apex acute; alar cells enlarged, inflated, yellow, in 1 row, supra-alar cells few, quadrate to short; laminal cells rhombic to flexuose. |
homomallous, ovate to oblong-lanceolate, tapering abruptly to apex, 0.5–1.1 mm; margins reflexed; apex short-acuminate; alar cells somewhat enlarged, not inflated, light brown, in 1 row, supra-alar cells in several rows, quadrate; laminal cells rhomboidal to elliptic. |
Seta | 0.8–1.2 cm. |
0.5–1 cm. |
Capsule | inclined to horizontal, 1 mm. |
suberect, 1–1.5 mm. |
Specialized | asexual reproduction absent. |
asexual reproduction absent. |
Sematophyllum demissum |
Sematophyllum subpinnatum |
|
Phenology | Capsules mature summer. | Capsules mature winter. |
Habitat | Wet siliceous rock near streams | Logs, bark of trees, humid forests, soil |
Elevation | low to moderate elevations | low elevations |
Distribution |
AL; AR; CT; FL; GA; IA; KS; LA; MI; MO; NC; NY; OH; OK; PA; SC; TN; NS |
FL; LA; HI; Mexico; Central America; South America; West Indies; e Asia; Africa; Australia |
Discussion | Sematophyllum demissum resembles Hageniella micans in many respects, but H. micans is distinguished by its strong double costa and toothed acumen. Also, exothecial cells of Sematophyllum are collenchymatous; those of Hageniella are not. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Sematophyllum subpinnatum sometimes persists briefly in greenhouses. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 28, p. 574. | FNA vol. 28, p. 574. |
Parent taxa | Sematophyllaceae > Sematophyllum | Sematophyllaceae > Sematophyllum |
Sibling taxa | ||
Synonyms | Hypnum demissum, H. carolinianum, S. carolinianum | Leskea subpinnata, S. caespitosum |
Name authority | (Wilson) Mitten: J. Linn. Soc., Bot. 8: 5. (1864) | (Bridel) E. Britton: Bryologist 21: 28. (1918) |
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