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new H.arenicola specie


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#1 jeff 1

 
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Posted 16 January 2012 - 10:11 AM

Bonjour

I have some problem with this new heliamphora , on the morphological caracters.

very close to H. elongata , for me the nectar spoon are the same when we see the pictures !!

can you explain the real difference between H.elongata and H.arenicola ?

have you imagined just an ecotype , with a relation to the substrat ?

jeff

Edited by jeff 1, 16 January 2012 - 10:13 AM.


#2 amphirion

 
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Posted 17 January 2012 - 19:00 PM

from what i understand arenicola is a sand dweller, and prefers sandy substrate as opposed to growing on vegetative/organic substrate.

also arenicola, although exposed to full sun, maintains a rather green/yellow coloration, with red only occurring at the nectar spoon, where as elongata can potentially be completely red.


biggest difference between the two is their flower morphology.

arenicola: elongata:
max # of flowers > 4 > 5
pedical length > 4 cm > 3,5 cm
stamen # > 25 > 20
bracts ovate/ciliate margins ovate/ avec filiform appendage
stamen filaments 3 cm 5 cm

etc, etc, etc. hope that helps.
info taken from McPhereson's Sarraceniaceae of SA.

Edited by amphirion, 17 January 2012 - 19:04 PM.