Verpa is a genus of ascomycete fungi related to the morels. Resembling the latter genus in edibility and form, the common name early morels is popular. There are five species in the widespread genus.[2]
^O'Donnell K, Cigelnik E, Weber NS, Trappe JM (1997). "Phylogenetic relationships among ascomycetous truffles and the true and false morels inferred from 18S and 28S ribosomal DNA sequence analysis". Mycologia. 89 (1): 48–65. doi:10.2307/3761172. JSTOR3761172.
^Barnard, Edward S., ed. (1998). "Mushrooms". Reader's Digest North American Wildlife: Trees and Nonflowering Plants. The Reader's Digest Association, Inc. p. 268. ISBN0-7621-0037-0.