Pseudoditrichum

Pseudoditrichum is a rare North American genus of haplolepideous moss (Dicranidae). It is the only known genus in its family (Pseudoditrichaceae), and there is only one species in the genus.[1][2] Pseudoditrichum mirabile has been found only in a small area along the Sloan River near Great Bear Lake. This is in the Northwest Territory in northern Canada, only a few kilometers south of the Arctic Circle.[3]

Pseudoditrichum
Scientific classification
Kingdom: Plantae
Division: Bryophyta
Class: Bryopsida
Subclass: Dicranidae
Order: Pseudoditrichales
Family: Pseudoditrichaceae
Steere & Z.Iwatsuki 1974
Genus: Pseudoditrichum
Steere & Z.Iwatsuki 1974
Species:
P. mirabil
Binomial name
Pseudoditrichum mirabil
Steere & Z.Iwatsuki 1974

Pseudoditrichum mirabile is unusual in that the combination of the gametophyte features and the sporophyte morphology do not match any other moss family. The entire plant is a mere 3 mm tall, growing on moist silt, generally underneath Populus. It spreads vegetatively by means of spherical underground tubers as well as via narrow, thread-like gemmae. Spores are 15-21 μm long, shed one at a time.[3][4]

References


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