Studies on 
Transition in Diplacus ...
 

S_S-P_01TR Detailed information 

 

 ----------------Mt Baldy Rd-----------------2002---------------------------------------

----------------Mt Baldy Rd-----------------2002---------------------------------------

----------------Mt Baldy Rd-----------------2004---------------------------------------








In 2004, we wondered why one flower could have this dark wine-red color. Twenty years later, it's the same color one could detect in individuals. This is typical for any population in transition; a new shade is hit by the first few trials.

----------------Mt Baldy Rd-----------------2004-------------------------------

----------------Mt Baldy Rd-----------------2024A-------------------------------

Slow transition rate along Mt. Baldy Road of Diplacus longiflorus towards Diplacus rutilus. We visited the same spot in 2002, 2004 and 2024 again.

longiflorus --t--> rutilus

----------------Mt Baldy Rd-----------------2024A------------------------------

----------------Mt Baldy Rd-----------------2024B------------------------------











One encounters the next significant floral shape within a mile higher up the same road. It is a plant transitioning between the variety calycinus and "ana", which is brand new in the area. This form has been up here for less than ten years after our estimation.

----------------Mt Baldy Rd-----------------2024B-----------------------------------

----------------Glendora Mt Road ------------2024A-----------------------------------

We hit onto the following brand new shape along Glendora Mountain Rd. Also, this time, it's also a calycinus variety transitioning to the "ana" shape experienced in only five individuals.

----------------Glendora Mt Road ------------2024A-----------------------------------

Conclusions:

It is too early to conclude. In non-dry seasons with well-soaked soils, most Diplacus plants flower well and show their transitional behaviour in a well-experienced way. That is, the front line has already reached
the 34.16° latitude. North of this line, Diplacus calycinus, with its light yellow flowers, starts to transition towards red flowered "ana" shaped flowers. Also, Diplacus rutilus is suddenly seen at Temescal Valley and along Mt Baldy Road, which was never reported before. r.b.07-17-24

 



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