The formation of deeply dissected and compound leaves at the bases of branches, their homology between different groups of mosses, and probable factors responsible for their development are considered. Previous authors interpret such leaves in a different ways and in most cases describe them as special morphological structures named pseudoparaphyllia. It is shown, however, that this term has been applied both to whole leaves and to separate leaf parts. Among the patterns of leaf formation deviating from the basic type, a special place belongs to the Hampeella variant, where deeply dissected and compound leaves are formed due to the delayed development of branch primordia. The families representing this variant occupy a basal position in the phylogenetic tree of pleurocarpous mosses. The Leucodon variant, where splitting of leaves into lobes is apparently explained by strong stem extension, is not specific for any definite phylogenetic group and appears in different families. The Hypnum variant is also not associated with certain phylogenetic lineages, but it provides an example of more profound specialization.
Russian Journal of Developmental Biology – Springer Journals
Published: May 14, 2012
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera