Scottish Rock Garden Club Forum

Seedy Subjects! => Seed Exchange => Topic started by: Gabriela on September 21, 2016, 06:26:55 PM

Title: Types of Gentiana seeds and their corresponding species
Post by: Gabriela on September 21, 2016, 06:26:55 PM: Those looking at the last Gentiana seed images HERE (http://www.srgc.net/forum/index.php?topic=4426.msg364349#msg364349)will notice the resemblance between G. cachemirica and G. septemfida var. lagodechiana seeds.
When I first took pictures I started to have doubts and wonder if what I have is indeed G. cachemirica. Looking around I found this article, which besides that it clarified my doubts, also shows the importance of recording morphological details. Modern analysis techniques may confirm the findings later.

CAN THE SECTIONAL POSITION OF GENTIANA CACHEMIRICA BE CLARIFIED BY A DETAILED ANALYSIS OF ITS MORPHOLOGY? - N. DAVITASHVILI & G. KARRER
http://www.academia.edu/7721205/CAN_THE_SECTIONAL_POSITION_OF_GENTIANA_CACHEMIRICA_BE_CLARIFIED_BY_A_DETAILED_ANALYSIS_OF_ITS_MORPHOLOGY (http://www.academia.edu/7721205/CAN_THE_SECTIONAL_POSITION_OF_GENTIANA_CACHEMIRICA_BE_CLARIFIED_BY_A_DETAILED_ANALYSIS_OF_ITS_MORPHOLOGY)

Just a short quote with highlights: “Smith (1961) speculated about close afﬁnities between Gentiana cachemirica and the eastern Caucasian populations of G. septemﬁda. The latter species is extremely variable and includes several subspecies growing in rather different habitat types, including alpine and upper forest belt pastures, and rocky crevices from 500 up to 2400 m above sea level (Dolukhanov, 1948; Grossheim, 1952, 1967; Kolakovsky, 1978; Gagnidze, 1985; Davitashvili & Karrer, 2006). Apparently the hypothesis of Smith (1961) was based on ecological and gross morphological data. Both Gentiana cachemirica and G. septemﬁda subsp. lagodechiana Kolak. grow on moist rocky ledges and are characterized by ovate leaves and ﬁmbriate plicae (characters 6, 16 in Fig. 4A) and the present morphological and phylogenetic cluster analyses conﬁrm his suggestion.”

This is to encourage everyone to take pictures of seeds; even if they qualify as ‘gross morphological data’ ;D , they are still important and can be used to ID and/or clarify species in some cases.

edit by maggi to add link to pictures referred to by Gabriela
Title: Re: Types of Gentiana seeds and their corresponding species
Post by: Gabriela on October 02, 2016, 04:53:54 PM: Types of Gentiana seeds and their corresponding species

A small project of mine regarding the identification of various groups of Gentiana after their seeds characters in a fast and simple way.

Please note that this classification can only be used to determine rapidly the group of species to which your gentian belongs, not to identify particular species.
For the blue highlights species there are images posted in the forum – type the name in the Search feature, preferably the left upper side forum search, and then choose the Seed Exchange topic (depending on the image resolution, some characters may not be visible).

http://files.srgc.net/general/Gentiana-seed-types-GabrielaCostea.pdf (http://files.srgc.net/general/Gentiana-seed-types-GabrielaCostea.pdf)

Some may find it useful; for ex. ‘problem species’ that are sent repeatedly for Seedex under a wrong name can be easily verified if they at least belong to the group with which they share the same seed characters.

The pdf #2 is an annotated list with all the Gentiana seeds images posted in the forum, up to this date.
Thank you Maggi for the help :)
Title: Re: Types of Gentiana seeds and their corresponding species
Post by: Maggi Young on October 02, 2016, 05:51:06 PM: I'm adding the photos we already have of Gentiana in the Seed Project to this thread as well, for ease of comparison.
Gentiana affinis
G. algida
G. alpina
G. altorum 1
G. altorum 2
Title: Re: Types of Gentiana seeds and their corresponding species
Post by: Maggi Young on October 02, 2016, 05:54:54 PM: Gentiana angustifolia 1
G. angustifolia 2
G. asclepiadea 1
G. asclepiadea 2
G. asclepiadea magnified x 55
Title: Re: Types of Gentiana seeds and their corresponding species
Post by: Maggi Young on October 02, 2016, 05:58:20 PM: Gentiana asclepiadea subsp. schistocalyx
G. bavarica v. bavarica
G. cachemirica
G. caelestis
G. chungtiensis
Title: Re: Types of Gentiana seeds and their corresponding species
Post by: Maggi Young on October 02, 2016, 06:00:08 PM: Gentiana clusii
G. cruciata
G. dahurica
G. decumbens
G. divisa
Title: Re: Types of Gentiana seeds and their corresponding species
Post by: Maggi Young on October 02, 2016, 06:01:54 PM: Gentiana dshimilensis
G. farreri
G. froehlichii
G. gelida subsp. uniflora
G. gelida
Title: Re: Types of Gentiana seeds and their corresponding species
Post by: Maggi Young on October 02, 2016, 06:04:25 PM: Gentiana georgei 1
G. georgei 2
G. hexaphylla
G. lutea 1
G. lutea 2
Title: Re: Types of Gentiana seeds and their corresponding species
Post by: Maggi Young on October 02, 2016, 06:06:34 PM: Gentiana oschtenica
G. phyllocalyx
G. prolata
G. purdomii
G. purpurea
Title: Re: Types of Gentiana seeds and their corresponding species
Post by: Maggi Young on October 02, 2016, 06:08:37 PM: Gentiana septemfida var. lagodechiana
G. septemfida
G. stipitata
G. tibetica
Gentiana triflora var. japonica fo. montana
Title: Re: Types of Gentiana seeds and their corresponding species
Post by: Maggi Young on October 02, 2016, 06:10:16 PM: Gentiana urnula
G. verna subsp. oschtenica
G.verna subsp. angulosa
G. tibetica 2
Title: Re: Types of Gentiana seeds and their corresponding species
Post by: Maggi Young on October 02, 2016, 06:14:07 PM: and to finish meantime - two Gentianellas

Gentianella heterosepala (named in error on slide and list a G. heterosepia)
Gentianella tortuosa
Title: Re: Types of Gentiana seeds and their corresponding species
Post by: Gabriela on October 02, 2016, 06:45:04 PM: Great to see them all in one place! Already quite a large Gentiana seeds library - now we need more images!