Helm’s Arboretum in August

19/08/2018

We are busy organising ourselves for our 2 week road trip, so given this is our final weekend, we take a few hours break and head out to Helm’s Arboretum (Mud Map SE35) to see what is flowering now. We make our way to the plot we usually find many snail orchids, however the first orchid found is the small Western Tiny Blue Orchid (Cyanicula aperta). These little beauties are found August to early October in a range from Dumbleyung and Mt Ragged.

Then we stumble across the snail orchids we had come to see. Still unable to name this species due to it not matching up with any of my reference books on location and or description.  Variation in rosettes may infer they are actually 2 species. 

Next I find the usual Esperance king spider orchids (Caladenia decora) in flower.

Whilst I take photos of the spider orchids Deb gets chatting to a fellow orchid enthusiast who shares with us her location of some Southern curly locks (Thelymitra uliginosa) within Helm’s Arboretum. We make our way to the said location and after around 15 mins of searching we find these small orchids flowering in the beautiful sunshine. The flowers themselves are only a 10c piece in size. These flower August and September in a range from Northcliffe and Mt Manypeaks with disjunct populations in Esperance and Perth.

So happy to have found some Southern curly-locks as the one and only previously found plant we could not be located this year.

Spiders awaken

28/07/2018

After another wonderful brunch at the Esperance Bird and Animal Park we make our way to Helms Arboretum (Mud Map SE35 ) to see if anything has flowered since we last visited a fortnight ago. 

First stop was just off the highway where we decided to jump out and check closer, even though we could see nothing from looking out the Triton windows. Deb found the first orchids of the day. The Hairy-stemmed snail orchids (Pterostylis sp. ‘inland’) were in hoods, spread over the entire area.  Also found close-by were some Banded greenhoods (Pterostylis vittata)

Further into the arboretum we find our first spider orchids of the season. Only two individual plants were found flowering and both are the Esperance king spider orchid (Caladenia decora). These flower August to October in a range from Bremer Bay to Cape Arid. 

Other snail orchids are found which appear to be a different species, as they lack the hairy stem. Checking with my esteemed colleague Margaret P. it appears to be an unnamed species currently termed Pterostylis sp. ‘Helms Arboretum’    

I also found a new patch of what appears to be Western tiny blue orchids (Cyanicula aperta) getting ready to bloom.

Western tiny blue orchids
Group of 6 or more ready to flower

Last orchid found for the day was a nice specimen of a Dark banded greenhood (Pterostylis sanguinea)  

As usual Helms Arboretum delivers.