Showing posts with label raganii. Show all posts
Showing posts with label raganii. Show all posts

Sunday, October 16, 2016

Psychilis x raganii Sauleda, I photographed several plants to see the flower variation







These orchids were growing in the eroded face of a hill, under and between spiny bushes and stunted trees.  The substrate was mud and loose stone, a mixture that made walking around challenging and dangerous.  The angle of the side of the hill varied between 45 and 60 degrees.  In some spots the bushes were a solid impassable mass.  In the steepest places there were no plants at all but only bare rock.  Most of the area was a crazy quilt of continuos vegetation, eroded spots, bare rock places and stunted grass patches.

Saturday, October 15, 2016

Psychilis x raganii Sauleda, a follow up visit to the population I visited in 2013




I visited this population of orchids for the first time back in 2013.  Today I checked on it and was pleased to find that the plants are still doing well. The plants were blooming and I saw seed pods and seedlings. There seems to be fewer plants in places where they can be easily seen from the trail but that might just be because aren't as many plant flowering now as when I first visited.  The place seems little changed.  However, before I got to the place where the orchids are I had to wade through a veritable sea of neck tall grass, Panicum maximum.  There may be that coming next dry season the area will be very fire prone due to large amount of dry grass present.  However the orchids are growing higher in the mountain in a place so dry that the grass is stunted, small and inhibited from growing by the abundant spiny bushes.  You can read about my first visit to the place where these orchids grow here.  http://ricardogupi.blogspot.com/2013/10/psychilis-x-raganii-serendipitious.html

Wednesday, October 30, 2013

Psychilis x raganii, the serendipitious discovery of a rarely photographed orchid



About a year ago I heard from a friend that he had found a population of Psychilis kraenzlinii in the southwest of the island.   He gave me the directions but it turned out that finding the plants was a lot harder than just arriving at the place.   Coordinating a joint visit to the site turned out to be an almost impossible task due to our very different work schedules and the fact that we live pretty far away from each other.

But recently we managed to find time to visit the place.  The orchids are not located in an area legally protected by the state as a natural area, but paradoxically, it is better protected that some orchids in state forests by simple dint of being located by the treacherous terrain and the difficulty getting there. No, I won’t reveal where it is, as I am sure collectors would clear the spot in a hurry. Even a single determined person could severely damage this population.

When I arrived at the area where the orchids live I found it was quite unlike any other orchid habitat I had visited before.  Rather than pristine habitat, it turned out to be a crazy kilt landscape of secondary scrubby vegetation, patches of woodland, cow pastures and places where (for inexplicable reasons) every bit of plant cover has been scrapped away until the bedrock as exposed.    Amid all this a reasonably healthy population of plants survived. 

How could this be so?  I think there are several reasons for the survival of this population of orchids.  First, the plants are not visible from the road.   My suspicion is that any plant that blooms near the road is quickly collected.   Second, the area has an impressive density of poisonous, spiny and toxic plants, making even a short hike a thoroughly unpleasant not to say unhealthy experience.   Third, the ground in the spot where the orchids grow is uneven and covered everywhere with a loose rocky soil that makes walking hard and that can cause a nasty fall. By the way, did I mention the rocks are sharp edged, I learned this the hard way.  In essence the plants survive because they are not collected and the spot where they grow is inimical to human presence.

I was overjoyed when I saw the plants thinking I had found Psy. kraenzlinii, but when I got closer to them it was clear to me that some were different from the typical kraenzlinii under cultivation.   Their orange-red color of the flowers and the yellow tint of the columns was unlike anything I seen before.  Intrigued, I took photos of the flowers of as many plants as I could to get an idea of the variability of the population.  When I got home I checked the volume six of Carl Withner’s book, Cattleyas and their relatives.¹  From there I got the ID of these orchids.  It turned out that at least one of the plants was not Psy. kraenzlinnii but Psy. x raganii.

Psy. x raganii is a hybrid of Psy. kraenzlinii and Psy. krugii, it occurs where the distribution of both species overlap.   I have never seen any plant of this hybrid under cultivation and I could locate only a single photo of this species on the Internet.  This hybrid was described in 1988 by Ruben Sauleda.     Psy x raganii. has a smaller flower size than kraenzlinii, the callus of the midlobe of the labellum is yellow or pale rose carmine to white and basally broader.²

¹ Withner, Carl. 1996. Cattleyas and their relatives, volume VI, The Bahamian and Caribbean species.

² Sauleda, Ruben. 1988. Phytologya 65(1): 1-33.