Pseudoscleropodium purum (Hedw.) M. Fleisch.

Habitat

This species tends to occur in a wide range of habitats, however they are commonly found in acidic grasslands, along roadsides and even in constantly maintained lawns, suggesting that they are well established in areas of high disturbance. They have been observed growing in open woodland but not in areas that are deeply shaded.


 Gametophyte

Overall structure:

Pseudoscleropodium purum branches moistThis is a fairly easy moss to recognize, owing in large part to the combination of its pale yellow-green, julaceous shoots that are invariably regularly pinnately branched.

Pseudoscleropodium purum shoot tip

 

 

 

The shoots of Pseudoscleropodium purum have a characteristically swollen or tumid appearance, especially when moist. The generic name Pseudoscleropodium aptly reflects this species resemblance to members of the genus Scleropodium with which its shares this aforementioned character.

Pseudoscleropodium purum shoot tip, moist

 

shoot tip, moist: note the recurvature of the leaf tips

 

 

 

 

 

Leaves:

Pseudoscleropodium purum stem leaf

Both stem and branch leaves are broadly-ovate to obovate, strongly concave, with an abrupt short point or apiculus at their tips.

 

Pseudoscleropodium purum branch leaf apex

 

 

Leaves have a single costa that usually extends to about mid-leaf. Stem leaves are somewhat larger than branch leaves.

 

 

Pseudoscleropodium purum stem leaf

Pseudoscleropodium purum branch leaf

 

stem leaf apex

 

 

 

 

 

branch leaf

 

 

Pseudoscleropodium purum branch leaf cells

 

 

 

 

leaf cells are very long and narrow, varying in shape from linear to vermicular.

 

 

 

 


Sporophyte:

Sporangium:

 

Seta:

The seta is relatively long, ranging between 2-5 cm, and is smooth.

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