Weymouthia

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

• Weymouthia mollis
• Weymouthia cochlearifolia

References

Retrieved from "https://en.wikipedia.org/w/index.php?title=Weymouthia_(plant)&oldid=1022220261"

Weymouthia là một chi rêu trong họ Meteoriaceae.^[1]

Chú thích

Liên kết ngoài

• Phương tiện liên quan tới Weymouthia tại Wikimedia Commons
• Dữ liệu liên quan tới Weymouthia tại Wikispecies