In this MWE I'd like to have the footnote with no footnotemark in text or footnote. I'm surprised that I couldn't find an answer elsewhere on this site - perhaps I haven't looked properly.

\documentclass{memoir}
\usepackage{lipsum}
\usepackage[textheight=4in]{geometry}
\newcommand{\chapternote}[1]{%
\footnote{\emph{#1}}%
}
\begin{document}
\chapter{One}
\begin{quotation}
Some introductory material here \ldots
\end{quotation}
\chapternote{Information about this chapter -- without footnotemark,
please.}
\lipsum[1]
\end{document}
Edit: followup question. I'd like to have normal footnote numbering for all the ordinary \footnote s. Footnote counter should reset at the start of each section.
