outward through a pore guarded by 2 cells. Nostoc colonies are visible as blue-green patches on the plant body.

The plants grow in moist clay soils on hills, in ditches, and in damp hollows among rocks.

Reproduction

Anthoceros species exhibit many forms of asexual reproduction. Besides fragmentation, a nearly ubiquitous form, these hornworts exhibit tubers, persistent apices, and apospory. Tubers and persistent apices can remain dormant and survive harsh conditions to form new thalli. Apospory,

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