Ptychomnion aciculare (pipe-cleaner moss)

Ptychomnion spp.

Ptychomniaceae Cool temperate Southern Hemisphere

Overview

Ptychomnion spp. is a genus of robust pleurocarpous mosses in the family Ptychomniaceae, represented chiefly by Ptychomnion aciculare. Plants form spreading wefts of pale green to golden-green, glossy shoots 2-6 inches (5-15 cm) long, with sparsely and irregularly branched stems that creep and arch over the substrate. Leaves are large for a moss, 0.12-0.24 inch (3-6 mm) long, spreading widely in all directions, egg-shaped at the base and drawn out into a long channeled point, with lengthwise pleats and a short forked midrib. The leaf margins are toothed toward the tip. Stems often appear bristly because the long-pointed leaves stand out from the stem. Sporophytes bear inclined to horizontal cylindrical capsules 0.10-0.16 inch (2.5-4 mm) long on red-brown setae, ripening spores in summer. Colonies build slowly over years across logs, soil banks, and tree bases in humid forest. Growth depends on persistent moisture and shade; shoots dull and shrink in dry, exposed conditions and recover after rain.

Native Range

Ptychomnion aciculare is native to the cool temperate Southern Hemisphere, including New Zealand, southeastern Australia and Tasmania, and southern South America. It grows on rotting logs, humus, soil banks, and tree bases in moist native forest, from lowland to montane elevations.

Suggested Uses

Seen across forest floors, fallen logs, and shaded banks as a ground and log colonizer, and occasionally grown in shaded terrariums and moss displays on wood or soil. Establishment depends on steady humidity and shade, and colonies decline in dry or exposed sites.

How to Identify

Identified by large, glossy, pale to golden-green shoots with long, spreading leaves that give the stems a bristly outline. Leaves are pleated lengthwise and taper to a long channeled, toothed point, with a short forked midrib. The large leaf size and spreading habit separate Ptychomnion spp. from smaller-leaved feather mosses of the same forests.

Appearance

Size & Dimensions

Width/Spread6" - 1'6"

Colors

Foliage Colors

green

yellow green

Fall Foliage Colors

no change

Detailed Descriptions

Foliage Description

pale green to golden-green

Growing Conditions

Sun Requirements

SunFull Shade

Tolerates up to 3 hours of direct sunlight daily

• Full Sun: 6+ hours of direct sunlight

• Partial Shade: 3-6 hours of direct sunlight

• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range4.5 - 6.5(Acidic)

357912

Soil Types

loam

Water & Climate

Water Needs

High

Frost Tolerance

hardy

Care & Maintenance

Care Guide

Plants persist on logs, humus, and tree bases in shaded, consistently humid forest. Steady moisture and shade support growth; shoots dull and contract during dry spells and revive after wetting. Strong sun and low humidity cause browning and colony loss. Fragments and detached shoots re-establish on moist wood or soil kept shaded. Colonies are slow to recover from drying or disturbance.