[Taxacom] Code enuiry

[dipteryx at freeler.nl]

Van: taxacom-bounces at mailman.nhm.ku.edu namens John Steel
Verzonden: do 12-11-2009 4:09
 
Could someone explain the ICBN to me regarding the -aea ending of the
genus, Durvillaea, after the explorer D'Urville?  I would have though
that a simple -a would be correct.

Thanks for your time,  John Steel

***
The position of the ICBN can be found in Rec. 60B, which starts:
"[...] a new generic name [...] taken from the name of a person [...]
should be formed as follows:

(a) When the name of the person ends with a vowel, the letter -a is 
    added (thus Ottoa after Otto; Sloanea after Sloane), except when 
    the name ends with -a, when -ea is added (e.g. Collaea after Colla),
    or with -ea (as Correa), when no letter is added. [...]"
 
and "Ex. 1. Durvillaea Bory (1826) and Urvillea Kunth (1821); [...]"

The example shows a case were indeed an "-a" (only) is added, as wel as
the case of Durvillaea.

It is important to keep in mind that Rec. 60B is a recommendation 
(only), to be used as a guide when forming new generic names, 
not a Rule on correct spelling of existing names. What is correct in 
such cases is to use the original spelling, whatever it is 
(exceptions excepted).

Anyway, Google yields this quote by Yvonne M. Chamberlain (1965):
"In this, and throughout his works, Bory spelled the generic name
Durvillaea, indicating that he intentionally latinized D'Urville's
name as "Durvillaeus"." 

http://www.archive.org/stream/bulletinofbritis03britlond/bulletinofbritis03britlond_djvu.txt

Which would mean the name Durvillaea is formed conforming to Rec. 60B.1(c):
"(c) In latinized personal names ending with -us this termination is
     dropped (e.g. Dillenia after Dillenius) before applying the 
     procedure described under (a) and (b)."

Hope this covers it,
Paul