Scottish Rock Garden Club Forum

General Subjects => Alpines => Topic started by: Robert Pavlis on April 25, 2016, 02:27:31 AM

Title: Draba identification
Post by: Robert Pavlis on April 25, 2016, 02:27:31 AM

1) Does anyone know of a plant key on line for Drabas?

2) I've been looking up info on Draba korabensis. Most pictures in Google are yellow as is my plant. a few describe it as white with a tall flower spike. There is not much info on this plant on the net. anyone know the true color?

Title: Re: Draba identification
Post by: Maggi Young on April 25, 2016, 10:28:14 AM

As this plant is a Bulgarian Balkan endemic, I'd be inclined to follow the description in the Red Data Book  of Bulgaria -
http://www.e-ecodb.bas.bg/rdb/en/vol1/Drakorab.html (http://www.e-ecodb.bas.bg/rdb/en/vol1/Drakorab.html)  -where it is shown as having white flowers on a tallish stem.

 Also this image of an herbarium  isotype sheet via Jstor ....
 http://plants.jstor.org/stable/history/10.5555/al.ap.specimen.hbg506013 (http://plants.jstor.org/stable/history/10.5555/al.ap.specimen.hbg506013)

I don't know, though, of an online key for Draba.

Title: Re: Draba identification
Post by: Karaba on April 25, 2016, 10:46:05 AM

Draba korabensis is also described with "Petala alba" (Schulz, 1927 (http://bibdigital.rjb.csic.es/Imagenes/O_ENG_13/O_ENG_13_1040.pdf), good description if you read latin ) and in the Leucodraba section (Buttler, 1967 (http://www.zobodat.at/pdf/Mitt-Bot-StaatsS-Muenchen_6_0275-0362.pdf) but I don't read german). In the key of Flora europaea (https://books.google.fr/books?id=XkI3UttRP6QC&pg=PA373&dq=Draba+korabensis+europaea&hl=fr&sa=X&ved=0ahUKEwjh9Ky2uqnMAhXJExoKHTLWAioQ6AEIJDAB#v=onepage&q=Draba%20korabensis%20europaea&f=false), it is under "flowers usually white or cream". Seems to be white...
Just a precision : Maggi, this is not a Bulgarian endemic, read the general distribution in your first link  ;D ;)

Title: Re: Draba identification
Post by: Maggi Young on April 25, 2016, 10:53:59 AM

Oh yes, sorry,  I had Bulgaria in my head - it it a Balkan endemic. I have made the correction.

Title: Re: Draba identification
Post by: r.mcaleese@abdn.ac.uk on May 01, 2017, 03:37:29 PM

Hello
I had this question as well. I received in the 2015 seed distribution some Draba korabensis seed. Sown 27/1/16. Lots of germination. I don't have a good image of the flower but they were definitely yellow.

Title: Re: Draba identification
Post by: r.mcaleese@abdn.ac.uk on May 01, 2017, 05:12:00 PM

Below is a better image taken 25/2/17 - original sowing 27/1/16. No special seed treatment.

Title: Re: Draba identification
Post by: Karaba on May 01, 2017, 08:20:45 PM

Looks like the common Draba aizoides

Title: Re: Draba identification
Post by: Mark Griffiths on July 23, 2017, 07:15:17 PM

Unfortunately it seems these days that most Drada seed I get from the AGS is aizoides even for some of the really well known ones.