Tillandsia atroviridipetala
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Tillandsia atroviridipetala
Species, Mexico.
Ken Woods 12/06.
Peter Tristram 12/13. Large form from Quiroga. (Lydia)

Rob Bower 06/17
Peter Tristram 06/17

Rob Bower ... "Not rare but what a little gem."
Chris Larson ... "Not rare, but slow. (Though not easy to replace when one dies.) Always a joy to see them flower."
Peter Tristram ... "What a thrill! Mexican tectorums are gems! Good to see one alive and well in the north. The last few hot summers have decimated my atros and plumosas though many of the other atro group species are doing fine. You must have a nice breezy spot. Look after it as it's unlikely replacements will be able to be imported for some time."
Rob Bower ... "Are these related to tectorums or is Mex tectorum just a term. My plumosa overnighted in the pool after a storm but survived. My plagiotropica and erubescens died in the heat last summer."
Peter Tristram ... "Sorry, but there are many green/yellow flowering Tills in Mexico and I only meant the atro group. Derek Calls them 'the Little Green Mexicans'.
I took a couple of screenshots of charts I got from Barfuss and Till. The two groups, tectorum and atroviridipetala, are now in the subgenus Viridantha of Tillandsia. It was considered as a genus name for the Mexican species with green/yellow flowers for a while but the dna put paid to that. Take a look at the phylogenetic (dna) chart Viridantha1 from the first paper which Jose introduced in a talk in NZ in 2013. The atro and tect groups are evolutionarily very closely related, so share a pretty recent common ancestor but evolved separately in Nth and Sth America into the current lot of species and intergrades. The latest chart, from the massive Barfuss et al study last year, only sequenced a few from the group - heteromorpha and rupicola from tectorum country (Peru, Ecuador) and lepidisepala, plumosa and tortilis from atroviridipetala country (Mexico). Still a lot of species to be sequenced and a lot of publications to come, some already underway."

Tillandsia atroviridipetala var. yagulensis

Peter Tristram 04/12. var. yagulensis
Stephen Haines 05/16
Peter Tristram 04/12 ... "Holm has grown T. atroviridipetala var. yagulensis from seed and his plants are most distictive in that they are slightly caulescent as they mature. Some of you would have these from me. Evidently it selfs like many of the ‘little green Mexicans’. This one is a pup from Lotte, from Yagul, Mexico."
Peter Tristram 05/17
Peter Tristram 05/17 ... "Every now and then something in the Mexican atroviridipetala group is displayed. Generally speaking the plants are quite rare in collections and are certainly not as easy to multiply as their fuzzy Andean close relatives. I got this baby as atroviridipetala var. yagulensis on a trip to Germany, from Holm in 2006 I think. It’s a big (for this group), semi-caulescent plant, so is likely correctly labelled. Identifying what’s what isn’t all that easy and Renate’s book is invaluable to have any hope.
I was pleased that most of my species in this group made it through the heat, though not all. Unfortunately deaths cannot be replaced anymore. I do hope it pups!"

Updated 01/07/17