Re: Chromosme count

From: chamb@u.arizona.edu
Date: Mon May 08 2000 - 09:38:25 PDT

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Date: Mon, 08 May 2000 09:38:25 -0700
From: chamb@u.arizona.edu
To: cp@opus.hpl.hp.com
Message-Id: <aabcdefg1434$foo@default>
Subject: Re: Chromosme count

At 05:19 AM 5/8/2000 -0700, you wrote:
>Hello,
>Steven Stewart here,
>I am sure I have read that some Ophioglossum species have as many as 1200
>chromosomes per cell. These plants are primitive fern allies, certainly more
>primitive than any flowering plants. I am not an expert, but am interested
>if my information is correct.

According to Mabberley's "The Plant Book" (a very useful reference work,
IMHO), ferns of the family Ophioglossaceae have chromosome numbers of 2n =
140 - 1440. Ophioglossum reticulatum has the highest chromosome number
known (which must be the 2n = 1440).

Michael

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