Gingersrus Database Taxon ID 7535
Costus rubineus 'Twister'
OLD NAME: Costus 'Twister'
NEW NAME: Costus rubineus 'Twister'
NAME CHANGE NOTES: Form of sp. nov. Costus rubineus
FULL SCIENTIFIC NAME:
STATUS : registered cultivar
FIELD OBSERVATIONS:(If field observations are available, you can click on the link to open in a new window.)
PHOTOS:(If photos are available, you can click on the link to open in a new window.)
This was collected, named and introduced by Dave Skinner, found at 1100 meters in the Alto Mayo Reserve, Peru. This plant is closest to C. scaber but has now been determined to be an undescribed species. The vegetative parts have thick hairs. Leaves are broad ovate, ligules short and truncate. The bracts tend to spiral or twist around the inflorescence - thus the name 'Twister'. Bracts are bright red, 35 mm long. Bracteole red, 18-20 mm, calyx 10 mm with shallow lobes, corolla lobes red-orange 40 mm, labellum red-orange 25 mm, stamen 30 mm yellow at base turning red toward apex, slightly exceeding labellum like C. scaber. This plant does NOT have the "characteristic strigulose costa" noted by Paul Maas. I have found this in every form of C. scaber that I have observed - a single line of hairs along the upper midrib of the leaves, normally barely visible, and sometimes requiring a lens. On this plant, the upper leaves are totally glabrous, and only under the microscope could I find a few scattered strigulose hairs around the upper midrib, and they were not in a line as normally found in Costus scaber. The undersides of the leaves are pubescent.
Cultivar Registry Photo at http://www.gingersrus.com/Registry/Costus_Twister.jpg Cultivar published in the Heliconia Society Quarterly Bulletin, Vol. 20, No. 1, March, 2014.
This page is for photos of the cultivar 'Twister', believed to be a form of the new species Costus rubineus.