Where can I find Polytrichum piliferum in my garden?

Polytrichum piliferum. P. piliferum can commonly be found growing in sites that are open, dry and acidic, such as in shallow soil over outcrops, open sandy soils of banks or gravel cover, and disturbed areas (like on roadsides or rocks).

What kind of leaves does a Polytrichum have?

There are two major sections of Polytrichum species. The first — section Polytrichum — has narrow, toothed, and relatively erect leaf margins. The other — section Juniperifolia — has broad, entire, and sharply inflexed leaf margins that enclose the lamellae on the upper leaf surface..

When was the genus Polytrichastrum separated from Polytrichum?

The genus Polytrichastrum was separated from Polytrichum in 1971 based on the structure of the peristome (which controls spore release). However, molecular and morphological data from 2010 support moving some species back into Polytrichum. ^ 1. Polytrichastrum G. L. Smith, Flora of North America

What kind of chloroplasts are in Polytrichum commune?

Cross section of a leaf of Polytrichum commune showing parallel photosynthetic lamellae at 400x magnification. The green cells contain chloroplasts. Another characteristic feature of the genus is its parallel photosynthetic lamellae on the upper surfaces of the leaves.

Which is the most conspicuous part of a Polytrichum?

Rhizome: It is horizontal portion and grows underground. It bears three rows of small brown or colourless leaves. It also bears rhizoids. The cells are rich in protoplasm and oil globules. 2. Upright leafy shoot: The leafy shoots are much longer. It is the most conspicuous part of the plant. It arises from rhizome.

How are the antheridia of a Polytrichum different?

Polytrichum is dioecious. Antheridia archegonia occur on different plants. The antheridia are borne in the axillary clusters at the tips of leafy stems. They are surrounded by a rosette of leaves called perigonial leaves. These leaves are different from the ordinary vegetative leaves. The perigonial leaves are spirally arranged.

Where does reproduction take place in a Polytrichum?

Epidermis is present over the cortex. Vegetative reproduction takes place by following methods: I. Protonema: The spores germinate to form protonema. Several buds grow on the protonema. Each bud by of its apical cell develops into gametophyte. 2. These are also called vegetative buds. They are formed on the rhizoids. 3.