Ptilidium ciliare


Ptilidium ciliare is a common leafy-liverwort in New Brunswick. It is recognized by its broadly 2-4 lobed leaves with unbranched cilia protruding from the margins. The lants are quite compact when dry, with leaves curling towards the substratum, but when moist, they can reach widths of 2.5-3 mm, and usually have ascending stems (stems that lift away from the substratum). Ptilidium ciliare differs from P. pulcherrimum in that its largest leaf lobes are generally over 15 cells wide at the base, whereas P. pulcherrimum's lobes are less than 12 cells wide. The plants are typically green to reddish-brown in colour.

Habitat and Distribution

Ptilidium ciliare can be found on soil over rock outcrops, on soil around rocks, on rotting wood or humus in bogs.

It is common and widespread in the province, with 76 records of Ptilidium ciliare in New Brunswick from all counties except for Glocester, in which it likely also occurs.

Only 40 records are known from the New Brunswick Museum herbarium, but many additional collections are known from other herbaria, particularly UBC (21 collections).

Species Name:

Ptilidium ciliare

Family Name:


Species Authority: (L.) Hampe
Total Records held: 76
Total Records held at NBM: 40
Bibliography: Belland 1992, Bagnell and Bishop 1993, Clay and Richards 1996, Cole et al. 2008