All ten Sarracenia species in this guide can cross with one another wherever their ranges overlap, and in the wild this happens remarkably often — at some sites in the southeastern United States a pure parent species is harder to find than a hybrid. Nineteen of these crosses have been given their own scientific name. All nineteen are listed below, with a short description of their appearance and, where a reliably identified, freely licensed photograph could be found, a picture.
Parent species: S. rubra subsp. wherryi × S. leucophylla
A cross between S. rubra subsp. wherryi and S. leucophylla. Combines the slender, red pitcher of one parent with something of the pale, veined hood of the other. Described from southern Alabama.
No photograph of this species under a Creative Commons licence or in the public domain is in the guide yet.
Parent species: S. rubra subsp. wherryi × S. psittacina
A cross between S. rubra subsp. wherryi and S. psittacina. Rare; the prostrate, curved pitcher shape of S. psittacina usually remains recognisable, but with a redder colour than in the pure species.
No photograph of this species under a Creative Commons licence or in the public domain is in the guide yet.
Parent species: S. alata × S. rosea
A cross between S. alata and S. rosea. Upright, yellow-green pitchers with the dark venation of S. rosea showing through the hood.
Parent species: S. flava × S. purpurea
A cross between S. flava and S. purpurea — one of the most common and earliest-described Sarracenia hybrids, already noted in the eighteenth century. Upright pitchers carrying the purple-red venation of S. purpurea, but in the slender, erect shape of S. flava.
Parent species: S. flava × S. rosea
A cross between S. flava and S. rosea. Slender, yellow-green pitchers with a light pink or purple blush and venation, especially on the upper part of the hood.
Parent species: S. flava × S. leucophylla
A cross between S. flava and S. leucophylla — commercially the most widely grown Sarracenia hybrid, with large, showy pitchers. The white upper section from S. leucophylla often remains visible, combined with the straight, yellow form of S. flava.
Parent species: S. flava × S. minor
A cross between S. flava and S. minor. Medium-sized, yellow-green pitchers with a hood that sits between the wide-open form of one parent and the more closely arching hood of the other.
Parent species: S. flava × S. rubra
A cross between S. flava and S. rubra. Slender pitchers, larger than in S. rubra but retaining something of its red venation pattern near the top.
Parent species: S. jonesii × S. purpurea
A cross between S. jonesii and S. purpurea. Rare, known only from the narrow overlap of both ranges in the Appalachians.
No photograph of this species under a Creative Commons licence or in the public domain is in the guide yet.
Parent species: S. leucophylla × S. minor
A cross between S. leucophylla and S. minor. Upright pitchers with a pale, veined top and a hood that arches over the opening.
Parent species: S. leucophylla × S. psittacina
A cross between S. leucophylla and S. psittacina. Often intermediate in form: less flattened than S. psittacina, but with a clearly closed, dome-shaped hood.
No photograph of this species under a Creative Commons licence or in the public domain is in the guide yet.
Parent species: S. leucophylla × S. rosea
A cross between S. leucophylla and S. rosea. Upright pitchers with the pale, veined upper section of S. leucophylla and the more rounded form of S. rosea.
Parent species: S. leucophylla × S. rubra
A cross between S. leucophylla and S. rubra. Trumpet-shaped pitchers with a crimped, white-and-red veined upper section, more slender than in S. leucophylla.
Parent species: S. minor × S. psittacina
A cross between S. minor and S. psittacina. Intermediate in form between both parents: less flattened than S. psittacina, with a more open hood.
Parent species: S. minor × S. purpurea
A cross between S. minor and S. purpurea. Pitchers with the curved, closed hood of S. minor, but with more of the red venation from S. purpurea.
Parent species: S. minor × S. rubra
A cross between S. minor and S. rubra. Slender pitchers with a smaller, less widely open hood than in S. minor.
No photograph of this species under a Creative Commons licence or in the public domain is in the guide yet.
Parent species: S. psittacina × S. rubra
A cross between S. psittacina and S. rubra. Small, prostrate to semi-erect pitchers, redder in colour than the pure S. psittacina.
No photograph of this species under a Creative Commons licence or in the public domain is in the guide yet.
Parent species: S. psittacina × S. rosea of purpurea
A cross between S. psittacina and either S. rosea or S. purpurea — which of the two is the actual parent has not been established with certainty. Known only from cultivation, of uncertain origin.
No photograph of this species under a Creative Commons licence or in the public domain is in the guide yet.
Parent species: S. rubra × S. rosea of purpurea
A cross between S. rubra and either S. rosea or S. purpurea — again, it is not certain which of the two is the actual parent. Pitchers with the red venation of S. rubra over a broader, more rounded shape.
Alongside these nineteen natural crosses there is also an honorary hybrid: not a name for a cross with a fixed parent combination, but a cultivar name given to a distinctive plant found in the wild to honour a person.
Suspected parent species: S. flava × S. leucophylla
Sarracenia 'Adrian Slack' is not a cross with a fixed parent combination, but an honorary name: registered in 2000 for a distinctive plant found in the wild near Milton, Florida, in the 1980s, to honour Adrian Slack, author of an influential book on carnivorous plants. Its suspected, but not certainly established, parents are S. flava and S. leucophylla: large pitchers shaped like S. flava, with a strikingly white hood shot through with deep red veins and light fenestration — features of S. leucophylla. The flowers are light pink to almost white.
No photograph of this species under a Creative Commons licence or in the public domain is in the guide yet.