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Author Topic: Confusion  (Read 593 times)

MarcR

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Confusion
« on: March 08, 2023, 05:39:53 PM »
CONFUSION!

Cornell University [Hortus III 1976) places Paulownia in Bignoniaceae; but most other plant descriptions place it in Scrophulariaceae. Does anyone know where it currently belongs?
Marc Rosenblum

Falls City, OR USA

I am in USDA zone 8b where temperatures almost never fall below 15F -9.4C.  Rainfall 50" 110 cm + but none  June-September.  We seldom get snow; but when it comes we get 30" overnight. Soil is sandy loam with a lot of humus. 
Oregon- where Dallas is NNW of Phoenix

DaveM

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Re: Confusion
« Reply #1 on: March 08, 2023, 06:21:32 PM »
I usually rely on the Angiosperm Phylogeny Website (based on APG IV) for this sort of question as it is usually kept
up to date and contains modern references.

http://www.mobot.org/MOBOT/research/APweb/

Here Paulownia is apparently placed in its own family: Paulowniaceae. the following is in the description:

"Previous Relationships. Paulownia is superficially like Catalpa (Bignoniaceae) and the two used to shuttle back and forth between "Scrophulariaceae" and Bignoniaceae. Paulownia has endosperm and lacks the distinctive ovary and seed anatomy of Bignoniaceae (Armstrong 1985; Manning 2000; Lersten et al. 2002); on the other hand, Catalpa is definitely to be included in Bignoniaceae. "
Dave Millward, East Lothian, Scotland

Maggi Young

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Re: Confusion
« Reply #2 on: March 08, 2023, 06:24:19 PM »
IPNI - the International Plant Names Index - certainly uses  Scrophulariaceae ! ::)
Margaret Young in Aberdeen, North East Scotland Zone 7 -ish!

Editor: International Rock Gardener e-magazine

MarcR

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Re: Confusion
« Reply #3 on: March 09, 2023, 01:58:34 AM »
Thank You, DaveM.     Thank You, Maggi
Marc Rosenblum

Falls City, OR USA

I am in USDA zone 8b where temperatures almost never fall below 15F -9.4C.  Rainfall 50" 110 cm + but none  June-September.  We seldom get snow; but when it comes we get 30" overnight. Soil is sandy loam with a lot of humus. 
Oregon- where Dallas is NNW of Phoenix

 


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