Ptychanthus

• Authority

  Thiers, Barbara M. & Gradstein, S. Robbert. 1989. Lejeuneaceae (Hepaticae) of Australia. I. Subfamily Ptychanthoideae. Mem. New York Bot. Gard. 52: 79 p.

• Family

  Lejeuneaceae

• Scientific Name

  Ptychanthus

• Description

  Distribution and Ecology - Branching Frullania-type. Ventral epidermal cells not larger than medullary cells; ventral merophyte four cells wide. Leaves convoluted when dry; leaf cells elongate; trigones cordate; oil bodies segmented; ocelli absent; gemmae absent. Gynoecial innovations present, innovation leaf sequence lejeuneoid; perianths with 2-5 ventral keels. Androecial bracts hypostatic. Seta nonarticulated; capsule thickenings of the fenestrate type; sporeling of the Lopholejeunea-type. The genus probably contains only one species, Ptychanthus striatus, which occurs in Africa, Asia, and Australasia.

• Discussion

  Type (lectotypified by Vanden Berghen, Lejeunia Mém. 6: 43. 1948). P. striatus (Lehm. & Lindenb.) Nees.