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Weymouthia (plant)

provided by wikipedia EN

Weymouthia is a genus of two species belonging to the feather mosses. Weymouthia occurs in southern South America, New Zealand and south-eastern Australia and Lord Howe Island. It is characterised by (i) its monopodial, often hanging growth form; (ii) slight differences between stem and branch leaves; and (iii) the straight perichaetial leaves. In contrast to other genera in the Lembophyllaceae, secondary stems appear unable to arch back to the substrate and then root and form a new creeping stem.[1]

Etymology

Weymouthia was named in honour of William Anderson Weymouth (1842–1932), a prominent Tasmanian botanist.[1] The species epithet mollis meaning soft, flabby, weak or feeble in Latin, refers to the exclusively hanging branches in this species. The species epithet cochlearifolia refers to the spoon-shaped leaves that resemble those of scurvy-grass.

Taxonomy

Weymouthia has traditionally been assigned to the Meteoriaceae, mainly because of the hanging branches. Later the genus was included in the Lembophyllaceae,[1] but according to recent cladistic analyses based on DNA, this family is polyphyletic, and its revision is to be expected.[2]

Key to the species

1 Leaves oblong, more than twice as long as wide; upper laminal cells not or shallowly pitted. → Weymouthia mollis - Leaves broadly ovate, less than twice as long as wide; upper laminal cells strongly pitted. → Weymouthia cochlearifolia[1]

Links to photos

References

  1. ^ a b c d e Klazenga, N.; Milne, J. "Australian Mosses Online. 30. Lembophyllaceae: Weymouthia.(2012)" (PDF). Retrieved 2 December 2012.
  2. ^ Merget, Benjamin; Wolf, Matthias (2010). "A molecular phylogeny of Hypnales (Bryophyta) inferred from ITS2 sequence-structure data". BMC Research Notes. 3: 320. doi:10.1186/1756-0500-3-320. PMC 2998521. PMID 21108782.
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Weymouthia (plant): Brief Summary

provided by wikipedia EN

Weymouthia is a genus of two species belonging to the feather mosses. Weymouthia occurs in southern South America, New Zealand and south-eastern Australia and Lord Howe Island. It is characterised by (i) its monopodial, often hanging growth form; (ii) slight differences between stem and branch leaves; and (iii) the straight perichaetial leaves. In contrast to other genera in the Lembophyllaceae, secondary stems appear unable to arch back to the substrate and then root and form a new creeping stem.

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