Phymatocerales Duff, J.C.Villarreal, Cargill & Renzaglia

, orth. var.

, scientific

Duff, R.J., Villarreal, J.C., Cargill, D.C. & Renzaglia, K.S. (2007), Progress and challenges toward developing a phylogeny and classification of the hornworts.

The Bryologist

110(2)

:

239

[primary reference]