Brachytheciaceae and Thuidiaceae

Kindbergia oregana vs Thuidium delicatulum

These two are not on this page because a keyword tool suggested them. They are here because our own identification model genuinely mistook one for the other, on real photographs, 3 times. We publish the rate, and then we tell you what actually separates them.

Confused 3x by our model Method published

Side by sidefigs. a and b

Kindbergia oregana, photographed by Randal
fig. a Randal, CC0 1.0

Kindbergia oregana

Oregon Beaked Moss
Thuidium delicatulum, photographed by Christian Berg
fig. b Christian Berg, CC BY 4.0

Thuidium delicatulum

delicate fern moss

How often our model gets it wrong measured, not estimated

When the plant was The model said How often
Kindbergia oregana Thuidium delicatulum 3 of 20 (15%)

The confusion runs one way only. The model mistakes Kindbergia oregana for Thuidium delicatulum, but not the reverse.

Measured on 38,949 openly licensed, research-grade photographs. Full method and dataset.

What actually separates themon the record

Family Brachytheciaceae versus Thuidiaceae. Different families, which is a real separation.
Genus Kindbergia versus Thuidium.

What we do not have yet: the diagnostic morphological character that a botanist would key on, from a source we can cite. We are not going to invent one. Until we have it, this page tells you the two are genuinely confusable, how often, and what the taxonomy and the flowering data do and do not settle.

Both recordsfull pages