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Correspondence

其他書名	Braun (Alexander) and Engelmann (George)
出版	1866
URL	http://books.google.com.hk/books?id=XTL-nQEACAAJ&hl=&source=gbs_api

註釋Incoming correspondence to George Engelmann from Alexander Braun, for 1866-1870. The correspondence relates to an extensive discussion of Isoetes species determinations, naming, and distinctions with some lists of collections sites, notes, etc. Brief discussion of Lemna and Equisetum sp. George Engelmann Jr.'s best options for his education. Help with identification of Characeae.