The genus Hypnodontopsis is represented by three extant species, all with a very limited distribution. One was described as H. mexicana (Thér.) Robins., only known from single localities in Mexico and Uganda, another is H. apiculata Iwats. and Nog., only known from a small area in Japan, and the last is H. spathulata H. Akiyama and A. Tanaka, recently described from Burma. The genus was, however, present in the Eocene (ca 45–58 myr bp) with five species; one of which is identical to the extant H. mexicana and is the most common moss in Baltic amber. All fossil species are illustrated and described. They are distinguished by variation of character states such as apiculate, lingulate, and piliferous leaves. The fact that the genus consisted of five (known) species in Tertiary, some of them very common, but only three extant species, which are quite rare, shows a decline of species number and frequency.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 108 • No. 2