Anchusa
   azurea P. Mill. (italian bugloss)

 Antiphytum
   floribundum (Torr.) Gray (texas saucer flower)
   heliotropioides A. DC. (mexican saucer flower)

 Buglossoides
   arvensis (L.) I.M. Johnston (corn gromwell)

 Cordia
   boissieri A. DC. (anacahuita)
   podocephala Torr. (cluster cordia)

 Cryptantha
   albida (Kunth) I.M. Johnston (dentnut cryptantha)
   angustifolia (Torr.) Greene (bristlelobe cryptantha)
   barbigera (Gray) Greene (bearded cat's eye)
   cinerea var. cinerea
   cinerea var. jamesii Cronq.
   cinerea var. laxa (J.F. Macbr.) Higgins
   crassipes I.M. Johnston (terlingua creek cat's eye)
   crassisepala var. crassisepala (thicksepal cryptantha)
   crassisepala var. elachantha I.M. Johnston
   mexicana (Brandeg.) I.M. Johnston (mexican cryptantha)
   micrantha var. micrantha (redroot cryptantha)
   minima Rydb. (small cryptantha)
   oblata (M.E. Jones) Payson (rough cryptantha)
   palmeri (Gray) Payson (cory cryptantha)
   paysonii (J.F. Macbr.) I.M. Johnston (payson's cat's eye)
   pterocarya var. cycloptera (Greene) J.F. Macbr. (wingnut cryptantha)
   pusilla (Torr. & Gray) Greene (low cryptantha)
   texana (A. DC.) Greene (texas cryptantha)

 Cynoglossum
   virginianum var. virginianum (blue hound's tongue, wild comfrey)
   zeylanicum (Vahl) Thunb. ex Lehm. (ceylon hound's tongue)

 Echium
   vulgare L. (blue-weed, blue-devil, viper's bugloss)

 Ehretia
   anacua (Teran & Berl.) I.M. Johnston (anacua, sugarberry, knock-away)

 Hackelia
   besseyi (Rydb.) J.L. Gentry (gray stickseed)
   floribunda (Lehm.) I.M. Johnston (many flower stickseed)
   pinetorum var. pinetorum
   virginiana (L.) I.M. Johnston (beggar's lice)

 Heliotropium
   amplexicaule Vahl (violet heliotrope)
   angiospermum Murr. (taperleaf heliotrope)
   confertifolium (Torr.) Torr. ex Gray (leaf heliotrope)
   convolvulaceum var. convolvulaceum (bindweed heliotrope)
   curassavicum var. curassavicum (salt heliotrope, chinese-pusley, quailplant, seaside heliotrope, cola de mico)
   curassavicum var. obovatum DC.
   europaeum L. (european heliotrope)
   fruticosum L. (key west heliotrope)
   glabriusculum (Torr.) Gray (greeneyes heliotrope, cola de alacran)
   greggii Torr. (fragrant heliotrope)
   indicum L. (india heliotrope, turnsole)
   molle (Torr.) I.M. Johnston (soft heliotrope)
   procumbens var. procumbens (fourspike heliotrope)
   racemosum Rose & Standl. (coastal plain heliotrope)
   tenellum (Nutt.) Torr. (pasture heliotrope)
   texanum I.M. Johnston (texas heliotrope)
   torreyi I.M. Johnston (slimleaf heliotrope)

 Lappula
   occidentalis var. cupulata (Gray) Higgins
   occidentalis var. occidentalis
   squarrosa (Retz.) Dumort. (bristly sheepburr)

 Lithospermum
   calycosum (J.F. Macbr.) I.M. Johnston (chinati gromwell)
   canescens (Michx.) Lehm. (hoary puccoon)
   caroliniense var. caroliniense (carolina gromwell)
   cobrense Greene (mountain gromwell)
   confine I.M. Johnston (arizona gromwell)
   incisum Lehm. (narrowleaf gromwell)
   matamorense DC. (rough gromwell)
   mirabile Small (san antonio gromwell)
   multiflorum Torr. ex Gray (mayflower gromwell)
   parksii var. parksii (parks gromwell)
   parksii var. rugulosum I.M. Johnston
   tuberosum Rugel ex DC. (tuber gromwell)
   viride Greene (greene gromwell)

 Myosotis
   macrosperma Engelm. (spring forget-me-not)
   verna Nutt. (early scorpion-grass, southern forget-me-not)

 Omphalodes
   aliena Gray (mexican navelseed)

 Onosmodium
   helleri Small (heller marbleseed)
   molle subsp. bejariense (DC. ex A. DC.) Cochrane
   molle subsp. occidentale (Mackenzie) Cochrane

 Pectocarya
   heterocarpa (I.M. Johnston) I.M. Johnston (chuckwalla combseed)
   platycarpa (Munz & Johnston) Munz & Johnston (broad fruit combseed)

 Tiquilia
   canescens var. canescens (gray coldenia, oreja de perro)
   gossypina (Woot. & Standl.) A. Richards. (texas crinklemat)
   greggii (Torr. & Gray) A. Richards. (plume coldenia)
   hispidissima (Torr. & Gray) A. Richards. (rough coldenia)
   mexicana (S. Wats.) A. Richards. (mexican coldenia)

 Tournefortia
   volubilis L. (twining tournefortia)