Texas Vascular Plant Checklist:  Agavaceae
The Century Plant Family
(Magnoliophyta, Liliopsida, Liliidae)
 Agave
   americana var. americana subsp. americana (century plant, maguey)
   americana subsp. protamericana Gentry
   asperrima Jacobi (rough century plant)
   glomeruliflora (Engelm.) Berger (chisos agave)
   gracilipes Trel. (slim-footed agave)
   havardiana Trel. (havard agave)
   lechuguilla Torr. (lechuguilla)
   lophantha Schiede (thorn-crested agave)
   parryi subsp. neomexicana (Woot. & Standl.) Ullrich
   parryi subsp. parryi
   weberi Cels ex Poisson (weber agave, meguey liso)

 Hesperaloe
   funifera (K. Koch) Trel. (new mexico false yucca)
   parviflora var. engelmannii (Krauskopf) Trel. (plateau herperaloe)
   parviflora var. parviflora (red hesperaloe, red-flowered yucca)

 Manfreda
   longiflora (Rose) Verhoek-Williams (runyons huaco)
   maculosa (Hook.) Rose (spice lily)
   sileri Verhoek-Williams (siler's tube rose)
   variegata (Jacobi) Rose (false aloe, rattlesnake master)
   virginica (L.) Salisb. ex Rose (false aloe)

 Yucca
   arkansana Trel. (arkansas yucca)
   baccata var. baccata (datil yucca, blue yucca, banana yucca)
   campestris McKelvey (plains yucca)
   constricta Buckl. (buckley yucca)
   elata var. elata (soaptree yucca, palmilla, soap-weed)
   faxoniana (Trel.) Sarg. (faxon yucca, giant yucca, carneros uycca, spanish dagger)
   filamentosa L. (weakleaf yucca)
   glauca var. glauca (narrowleaf yucca)
   louisianensis Trel. (gulf coast yucca)
   necopina Shinners (brazos river yucca)
   pallida McKelvey (pale yucca)
   reverchonii Trel. (plateau yucca, san angelo yucca)
   rupicola Scheele (texas yucca, twistedleaf yucca)
   tenuistyla Trel. (whiterim yucca)
   thompsoniana Trel. (thompson's yucca)
   torreyi Shafer (torrey yucca, spanish dagger)
   treculeana var. succulenta McKelvey (trecul yucca, palma pita, spanish dagger)
   treculeana var. treculeana