Other notable characteristics
Drosera filiformis comes in a few flavors, hybrids, and cultivars:
• Drosera filiformis var. filiformis has long threadlike leaves 6 inches (15 cm) tall with red glands. A specific colony of these found in Florida and known as the ‘Florida Giant,’ has leaves almost twice as tall.
• Drosera filiformis var tracyi is similar to the above, but with green glands and leaves that reach for the sky at 20 inches (50.5 cm) tall.
• Drosera ‘California Sunset’ is a hybrid produced by Joe Mazrimas between the aforementioned varieties. It has red glands and forms clumps, making it look like tall carnivorous grass.
• Drosera x hybrida is a cute little D. filiformis hybrid with a curious history. It has 3 inch (7.5 cm) leaves, requires a cold winter dormancy, and is sterile…ish? It was originally discovered by the botanist John MacFarlane in the 1890s and identified as a hybrid between D. intermedia and filiformis. It has been rediscovered near the New Jersey shore multiple times since, and entered cultivation in 1974. D. x hybrida was always thought to be a sterile hybrid. The plant was introduced to Butterfly Valley, California in the 1970s and, even though there were attempts to remove it as an invasive species, it kept popping back up. Turns out, the plants in Butterfly Valley mutated and started producing seed! Folks now believe it to be an evolutionary stepping stone to an entirely new species. Nature’s cool like that.
• Drosera arcturi is a rarer, cold temperate species growing in snowy alpine regions of Australia, Tasmania, and New Zealand. It’s a relic species, thought to date back many thousands of years (or more). Leaves are a purplish brown color, reach lengths up to 4 inches (10 cm), and their hibernaculum are cone-shaped