The Carnivorous Plant FAQ v. 11.5
- courtesy of -
The International Carnivorous Plant Society

Q: Darlingtonia: various types

A: There is only one species, Darlingtonia californica Torr. There are no subspecies or varieties. However, at one site in the Sierra Nevada, on private land the details of which I cannot tell you too much about (except for this trip report), there is a small subpopulation of Darlingtonia californica that is anthocyanin-free. This plant has been given the botanical name Darlingtonia californica f. viridiflora B.Rice, by yours truly. See McPherson & Schnell (2011) for the original publication. This plant also goes by the cultivar name Darlingtonia 'Othello', also coined by yours truly on an earlier date. Every now and then I have distributed seed of this plant to seed banks, but I do not have any now, so don't ask---Thank you, thankyouverymuch.

Having spent a hefty amount of time looking at Darlingtonia, I have noticed a number of attractive pitcher and flower variants. In addition to the color variants I describe below, I have seen plants with swept-back fangs, serrate fangs, or extra-long sepals. There are some very cool plants out there.

Green fangs
This is an overall green plant, with no major amount of red pigmentation. It is in effect the standard plant against which others are compared. Some red pigmentation is present, so it is not an anthocyanin-free mutant.

Red-edge fangs
This looks very much like the green fangs plant, but with some pigmentation in the fangs. The pigmentation patterning is very consistent. First, there is usually some pigment at the base of each fang. Second, the red in the fangs is mostly constrained to the tissue between the outer edge of each fang, and the major vein that runs along the outer edge of the fang. Not a very showy type in my estimation.

Blush fangs
This plant has a blush of red in the fangs, but even in bright light the pigmentation is not very dark. Often it is most intense near the point of contact of the fang to the pitcher head.

Crimson fangs
Probably my favorite type, the fangs are uniformly pigmented a beautiful, deep red. The rest of the plant is largely green.

Red keel
This plant usually has nicely pigmented fangs. But what is really key is that the underside of the pitcher is red. The red can extend to about halfway up the pitcher head. This plant is perhaps an intermediate between "crimson fangs" and "crimson pitcher."

Crimson pitcher
The entire pitcher is intensely colored deep red. Don't confuse old, second year pitchers of other types for this plant. This kind of plant has pitchers that are red the first year. Sometimes even the sepals are tinged red!

Page citations: Rice, B.A. 1997, 1998, 2001c, 2006a; McPherson & Schnell 2011; Rondeau, J.H. 1991; personal observations.

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Revised: February 2012
©Barry Rice, 2005