Adiantaceae GH: 00339038 Pellaea flexuosa (Kaulfuss ex Schlechtendal & Chamisso) Link USA: Texas the Comanche country J. L. Riddell 1773*1 1839-10
GH: 00339038 Pellaea ovata (Desvaux) Weatherby USA: Texas the Comanche country J. L. Riddell 1773*1 1839-10
Lycopodiaceae GH: 00443978 Lycopodium corallinum Riddell USA: Texas at Kaolin creek, near the San Saba [River], ... J. L. Riddell 1797 1839-11
Polygonaceae GH: 00036554 Eriogonum tenellum ramosissimum Bentham USA: Texas Kaolin Creek, between Piedernales and San Sa... J. L. Riddell 1441 1839-11
Pteridaceae GH: 00339038 Pteris zygophylla Riddell USA: Texas the Comanche country J. L. Riddell 1773*1 1839-10
Selaginellaceae GH: 00443978 Selaginella arenicola riddellii (Van Eseltine) R. M. Tryon USA: Texas at Kaolin creek, near the San Saba [River], ... J. L. Riddell 1797 1839-11
GH: 00443978 Selaginella corallina (Riddell) Wilbur & Whitson USA: Texas at Kaolin creek, near the San Saba [River], ... J. L. Riddell 1797 1839-11
GH: 00443978 Selaginella riddellii Van Eseltine USA: Texas at Kaolin creek, near the San Saba [River], ... J. L. Riddell 1797 1839-11
GH: 00443978 Selaginella rupestris (Linnaeus) Spring USA: Texas at Kaolin creek, near the San Saba [River], ... J. L. Riddell 1797 1839-11
