I just found this in a old word file. It's got to be from Paul, it may be from his book or some other source, I'm not sure but I thought I would post it. I added the newer names.
Paul Thomson’s Hybrid Pitahayas
The first hybrid seeds were from a cross made of two unknown species ‘Neitzel’ and ‘Rixford’. All seedlings of “Neitzel” X ‘Rixford’ must be cross pollinated to set fruit. The seedlings of “Neitzel” X ‘Rixford’ are: 1-S, 2-S, 3-S, 4-S, 5-S, 6-S, and 9-S. The first seedlings fruited in 1998 and all fruited by 2000.
Seedlings 7-S and 8-S are from a cross between 'Houghton' and ‘Rixford’, both with red flesh of excellent flavor. `Houghton may not be a Hylocereus but a related genus as the fruit has very small scales each with a sharp spine at its tip, a characteristic not found in fruits of the genus Hylocereus. Fruit is round and 2” in diameter. It is very frost hardy and has only suffered minor damage by a temperature of 25 degrees F. The 2 seedlings are intermediate in hardiness between the two parents.
1-S (Physical Graffiti). First fruited in 1998 with two fruits weighing 1 pound 8 ounces and 1 pound 10 ounces. A very attractive fruit, flesh a dark pink, flavor very good.
2-S (Cosmic Charlie). First fruited in 2000 with two fruits weighing 1 pound 4 ounces and 1 pound 8 ounces. Flesh a deep red, and flavor very good to excellent.
3-S.--‘Delight’ -- First fruited in 1998 with two fruits weighing 1 pound 4 ounces and 1 pound 8 ounces. Flesh color was a delicate pink and the flavor was superb. Other people who have eaten it are equally enthusiastic. I can truthfully say the flavor runs a close second to S. megalanthus fruit I have eaten, although they are two different fruits each with its distinctive flavor. I believe flavor wise it is about as good a fruit as we can expect to get from any plant in the genus Hylocereus. The plant bears well, and is a good grower. Two-year-old cuttings have fruited heavily giving it a good bearing potential.
4-S. Flowered for the first time in 2000 with one fruit. Attractive dark-pink outside with flesh a pale-pink, the most nearly white flesh of any of the hybrids. Weight was 1 pound, flavor very good. The plant appears to be a somewhat dwarf grower, low and spreading with several upright stems in the center..
5-S (Purple Haze). First flowering in 1999 with 5 fruits weighing from 1 pound to 1 pound 6 ounces. Outside color pinkish-red with flesh a dark-red or magenta. Flavor good to very-good but no improvement over the parent plants. Spines larger than any of the others making it less user friendly and harder to handle.
6-S. First fruited in 1998 with two fruits weighing 1 pound and 1 pound 8 ounces. Flesh a dark red, flavor good to very good, fruit very attractive in appearance. A very vigorous grower and one of the hardiest. Severely damaged in the 31 Jan 02 freeze and was removed,
7-S. First fruited in 1999 with 5 fruits weighing 7 to 8 ounces, a dull orange-red outside with very small scales, flesh a dark red, flavor excellent. Severely damaged in the 31 Jan 02 freeze and was removed.
8-S. First fruited in 1999 with 6 fruits weighing 12 ounces, a deep red outside with very small scales, flesh a very attractive deep, almost fluorescent magenta, flavor excellent.
9-S (Dark Star). First fruited in 1999 when it produced one beautiful fruit weighing 1 pound 10 ounces, red flesh the same as the ‘Rixford’ parent. with flavor running a close second to ‘Delight’ (3-S). In 2000 it had 8 fruits weighing 14 ounces to 1 pound 4 ounces each. This, too, I believe, has a commercial potential. The flowers of this plant are unique inasmuch as the stigma lobes have split ends or are bi-fid.