| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| IPTI | Ipomoea tiliacea auct. non (Willd.) Choisy | Ipomoea batatas | Convolvulaceae
|
| IPTRT | Ipomoea trichocarpa Ell. var. torreyana (Gray) Shinners | Ipomoea cordatotriloba var. torreyana | Convolvulaceae
|
| IPTR | Ipomoea trichocarpa Ell. | Ipomoea cordatotriloba var. cordatotriloba | Convolvulaceae
|
| IPTR3 | Ipomoea tricolor Cav. | grannyvine | Convolvulaceae
|
| IPTRT2 | Ipomoea trifida (Kunth) G. Don var. torreyana Gray | Ipomoea cordatotriloba var. torreyana | Convolvulaceae
|
| IPTR4 | Ipomoea trifida auct. p.p. non (Kunth) G. Don | Ipomoea cordatotriloba var. torreyana | Convolvulaceae
|
| IPTR2 | Ipomoea triloba L. | littlebell | Convolvulaceae
|
| IPTR6 | Ipomoea triloba auct. non L. | Ipomoea batatas | Convolvulaceae
|
| IPTR7 | Ipomoea triquetra (Vahl) Roemer & J.A. Schultes | Operculina turpethum var. turpethum | Convolvulaceae
|
| IPTU5 | Ipomoea tuba (Schlecht.) G. Don | Ipomoea violacea | Convolvulaceae
|
| IPTU4 | Ipomoea tuberosa L. | Merremia tuberosa | Convolvulaceae
|
| IPTUP | Ipomoea tuboides O. Deg. & van Ooststr. var. pubescens Lag. | Ipomoea tuboides | Convolvulaceae
|
| IPTU2 | Ipomoea tuboides O. Deg. & van Ooststr. | Hawai'i morning-glory | Convolvulaceae
|
| IPTU3 | Ipomoea turbinata Lag. | lilacbell | Convolvulaceae
|
| IPTU6 | Ipomoea turpethum (L.) R. Br. | Operculina turpethum | Convolvulaceae
|
| IPVI | Ipomoea violacea L. | heavenlyblue morning-glory | Convolvulaceae
|
| IPWR | Ipomoea wrightii Gray | Wright's morning-glory | Convolvulaceae
|
| IPOMO | Ipomoea L. | morning-glory | Convolvulaceae
|
| IPAGA3 | Ipomopsis aggregata (Pursh) V. Grant ssp. aggregata | scarlet gilia | Polemoniaceae
|
| IPAGA | Ipomopsis aggregata (Pursh) V. Grant ssp. arizonica (Greene) V.& A. Grant | Ipomopsis arizonica | Polemoniaceae
|
| IPAGA2 | Ipomopsis aggregata (Pursh) V. Grant ssp. attenuata (Gray) V.& A. Grant | scarlet gilia | Polemoniaceae
|
| IPAGB | Ipomopsis aggregata (Pursh) V. Grant ssp. bridgesii (Gray) V.& A. Grant | scarlet gilia | Polemoniaceae
|
| IPAGC | Ipomopsis aggregata (Pursh) V. Grant ssp. candida (Rydb.) V.& A. Grant | scarlet gilia | Polemoniaceae
|
| IPAGC2 | Ipomopsis aggregata (Pursh) V. Grant ssp. collina (Greene) Wilken & Allred | scarlet gilia | Polemoniaceae
|
| IPAGF | Ipomopsis aggregata (Pursh) V. Grant ssp. formosissima (Greene) Wherry | scarlet gilia | Polemoniaceae
|
| IPAGT | Ipomopsis aggregata (Pursh) V. Grant ssp. texana (Greene) W.C. Martin & C.R. Hutchins | Ipomopsis aggregata ssp. formosissima | Polemoniaceae
|
| IPAGW | Ipomopsis aggregata (Pursh) V. Grant ssp. weberi V. Grant & Wilken | scarlet gilia | Polemoniaceae
|
| IPAGA4 | Ipomopsis aggregata (Pursh) V. Grant var. attenuata (Gray) Dorn | Ipomopsis aggregata ssp. attenuata | Polemoniaceae
|
| IPAGM3 | Ipomopsis aggregata (Pursh) V. Grant var. macrosiphon (Kearney & Peebles) Dorn | Ipomopsis macrosiphon | Polemoniaceae
|
| IPAGT3 | Ipomopsis aggregata (Pursh) V. Grant var. tenuilobus (Rydb.) Dorn | Linanthus nuttallii ssp. tenuilobus | Polemoniaceae
|
| IPAGT2 | Ipomopsis aggregata (Pursh) V. Grant var. texana (Greene) Shinners | Ipomopsis aggregata ssp. formosissima | Polemoniaceae
|
| IPAG | Ipomopsis aggregata (Pursh) V. Grant | scarlet gilia | Polemoniaceae
|
| IPART | Ipomopsis arizonica (Greene) Wherry ssp. texana (Greene) Wherry | Ipomopsis aggregata ssp. formosissima | Polemoniaceae
|
| IPAR2 | Ipomopsis arizonica (Greene) Wherry | Arizona ipomopsis | Polemoniaceae
|
| IPBR2 | Ipomopsis bridgesii (Gray) Wherry | Ipomopsis aggregata ssp. bridgesii | Polemoniaceae
|
| IPCA7 | Ipomopsis campylantha (Woot. & Standl.) W.C. Martin & C.R. Hutchins | Ipomopsis pinnata | Polemoniaceae
|
| IPCA6 | Ipomopsis candida (Rydb.) W.A. Weber | Ipomopsis aggregata ssp. candida | Polemoniaceae
|
| IPCOC3 | Ipomopsis congesta (Hook.) V. Grant ssp. congesta | ballhead ipomopsis | Polemoniaceae
|
| IPCOC | Ipomopsis congesta (Hook.) V. Grant ssp. crebrifolia (Nutt.) Day | ballhead ipomopsis | Polemoniaceae
|
| IPCOF | Ipomopsis congesta (Hook.) V. Grant ssp. frutescens (Rydb.) Day | ballhead ipomopsis | Polemoniaceae
|
| IPCOM | Ipomopsis congesta (Hook.) V. Grant ssp. montana (A. Nels. & Kennedy) V. Grant | ballhead ipomopsis | Polemoniaceae
|
| IPCON | Ipomopsis congesta (Hook.) V. Grant ssp. nevadensis (Tidestrom) Kartesz & Gandhi | ballhead ipomopsis | Polemoniaceae
|
| IPCOP | Ipomopsis congesta (Hook.) V. Grant ssp. palmifrons (Brand) Day | ballhead ipomopsis | Polemoniaceae
|
| IPCOP2 | Ipomopsis congesta (Hook.) V. Grant ssp. pseudotypica (Constance & Rollins) Day | ballhead ipomopsis | Polemoniaceae
|
| IPCOV | Ipomopsis congesta (Hook.) V. Grant ssp. viridis (Cronq.) Day | ballhead ipomopsis | Polemoniaceae
|
| IPCOP3 | Ipomopsis congesta (Hook.) V. Grant var. pseduotypica (Constance & Rollins) Dorn | Ipomopsis congesta ssp. pseudotypica | Polemoniaceae
|
| IPCO5 | Ipomopsis congesta (Hook.) V. Grant | ballhead ipomopsis | Polemoniaceae
|
| IPCR2 | Ipomopsis crebrifolia (Nutt.) Dorn | Ipomopsis congesta ssp. crebrifolia | Polemoniaceae
|
| IPDE | Ipomopsis depressa (M.E. Jones ex Gray) V. Grant | depressed ipomopsis | Polemoniaceae
|
| IPEF | Ipomopsis effusa (Gray) Moran | Baja California ipomopsis | Polemoniaceae
|
| IPFR | Ipomopsis frutescens (Rydb.) V. Grant | Ipomopsis congesta ssp. frutescens | Polemoniaceae
|
| IPGL | Ipomopsis globularis (Brand) W.A. Weber | Hoosier Pass ipomopsis | Polemoniaceae
|
| IPGU | Ipomopsis gunnisonii (Torr. & Gray) V. Grant | sanddune ipomopsis | Polemoniaceae
|
| IPHA | Ipomopsis havardii (Gray) V. Grant | Havard's ipomopsis | Polemoniaceae
|
| IPLA2 | Ipomopsis laxiflora (Coult.) V. Grant | iron ipomopsis | Polemoniaceae
|
| IPLOA | Ipomopsis longiflora (Torr.) V. Grant ssp. australis Fletcher & W.L. Wagner | whiteflower ipomopsis | Polemoniaceae
|
| IPLOL | Ipomopsis longiflora (Torr.) V. Grant ssp. longiflora | flaxflowered ipomopsis | Polemoniaceae
|
| IPLO2 | Ipomopsis longiflora (Torr.) V. Grant | flaxflowered ipomopsis | Polemoniaceae
|
| IPMA2 | Ipomopsis macombii (Torr. ex Gray) V. Grant | Macomb's ipomopsis | Polemoniaceae
|
| IPMA4 | Ipomopsis macrosiphon (Kearney & Peebles) V. Grant & Wilken | longtube ipomopsis | Polemoniaceae
|
| IPMI2 | Ipomopsis minutiflora (Benth.) V. Grant | littleflower ipomopsis | Polemoniaceae
|
| IPMU3 | Ipomopsis multiflora (Nutt.) V. Grant | manyflowered ipomopsis | Polemoniaceae
|
| IPPI | Ipomopsis pinnata (Cav.) V. Grant | San Luis Mountain ipomopsis | Polemoniaceae
|
| IPPO | Ipomopsis polyantha (Rydb.) V. Grant | Pagosa ipomopsis | Polemoniaceae
|
| IPPO2 | Ipomopsis polycladon (Torr.) V. Grant | manybranched ipomopsis | Polemoniaceae
|
| IPPU4 | Ipomopsis pumila (Nutt.) V. Grant | dwarf ipomopsis | Polemoniaceae
|
| IPRO | Ipomopsis roseata (Rydb.) V. Grant | rosy ipomopsis | Polemoniaceae
|
| IPRU2 | Ipomopsis rubra (L.) Wherry | standing-cypress | Polemoniaceae
|
| IPSA2 | Ipomopsis sancti-spiritus Wilken & Fletcher | Holy Ghost ipomopsis | Polemoniaceae
|
| IPSPC | Ipomopsis spicata (Nutt.) V. Grant ssp. capitata (Gray) V. Grant | spiked ipomopsis | Polemoniaceae
|
| IPSPC2 | Ipomopsis spicata (Nutt.) V. Grant ssp. orchidacea (Brand) Wilken & Hartman var. cephaloidea (Rydb.) Wilken & Hartman | orchid ipomopsis | Polemoniaceae
|
| IPSPO3 | Ipomopsis spicata (Nutt.) V. Grant ssp. orchidacea (Brand) Wilken & Hartman var. orchidacea (Brand) Dorn | orchid ipomopsis | Polemoniaceae
|
| IPSPO2 | Ipomopsis spicata (Nutt.) V. Grant ssp. orchidacea (Brand) Wilken & Hartman | orchid ipomopsis | Polemoniaceae
|
| IPSPR | Ipomopsis spicata (Nutt.) V. Grant ssp. robruthiorum Wilken & Hartman | spiked ipomopsis | Polemoniaceae
|
| IPSPS | Ipomopsis spicata (Nutt.) V. Grant ssp. spicata | spiked ipomopsis | Polemoniaceae
|
| IPSPT | Ipomopsis spicata (Nutt.) V. Grant ssp. tridactyla (Rydb.) Wilken & Hartman | spiked ipomopsis | Polemoniaceae
|
| IPSPR2 | Ipomopsis spicata (Nutt.) V. Grant var. robruthiorum (Wilken & Hartman) Dorn | Ipomopsis spicata ssp. robruthiorum | Polemoniaceae
|
| IPSP | Ipomopsis spicata (Nutt.) V. Grant | spiked ipomopsis | Polemoniaceae
|
| IPST3 | Ipomopsis stenothyrsa (Gray) W.A. Weber | Gilia stenothyrsa | Polemoniaceae
|
| IPTE3 | Ipomopsis tenuifolia (Gray) V. Grant | slenderleaf skyrocket | Polemoniaceae
|
| IPTEL2 | Ipomopsis tenuituba (Rydb.) V. Grant ssp. latiloba V. Grant & Wilken | slendertube skyrocket | Polemoniaceae
|
| IPTEM | Ipomopsis tenuituba (Rydb.) V. Grant ssp. macrosiphon (Kearney & Peebles) V. Grant & Wilken | Ipomopsis macrosiphon | Polemoniaceae
|
| IPTET2 | Ipomopsis tenuituba (Rydb.) V. Grant ssp. tenuituba | slendertube skyrocket | Polemoniaceae
|
| IPTE4 | Ipomopsis tenuituba (Rydb.) V. Grant | slendertube skyrocket | Polemoniaceae
|
| IPTH2 | Ipomopsis thurberi (Torr. ex Gray) V. Grant | El Paso skyrocket | Polemoniaceae
|
| IPWR2 | Ipomopsis wrightii (Gray) Gould | leafy skyrocket | Polemoniaceae
|
| IPOMO2 | Ipomopsis Michx. | ipomopsis | Polemoniaceae
|
| IRAN | Iresine angustifolia Euph. | white snowplant | Amaranthaceae
|
| IRAR | Iresine argentata (Mart.) D. Dietr. | tropical bloodleaf | Amaranthaceae
|
| IRCA5 | Iresine canescens Humb. & Bonpl. ex Willd. | Iresine diffusa | Amaranthaceae
|
| IRCE5 | Iresine celosia L. | Iresine diffusa | Amaranthaceae
|
| IRCE2 | Iresine celosioides L. | Iresine diffusa | Amaranthaceae
|
| IRCE3 | Iresine celosioides auct. non L. | Iresine rhizomatosa | Amaranthaceae
|
| IRDI | Iresine diffusa Humb. & Bonpl. ex Willd. | Juba's bush | Amaranthaceae
|
| IREL2 | Iresine elatior A. Rich. ex Willd. | Iresine angustifolia | Amaranthaceae
|
| IREL3 | Iresine elongata Humb. & Bonpl. ex Willd. | Iresine diffusa | Amaranthaceae
|
| IRFL | Iresine flavescens Humb. & Bonpl. ex Willd. | yellow bloodleaf | Amaranthaceae
|
| IRGR | Iresine grandiflora Hook. | Pfaffia grandiflora | Amaranthaceae
|
| IRHE3 | Iresine herbstii Hook. ex Lindl. | Herbst's bloodleaf | Amaranthaceae
|
| IRHE | Iresine heterophylla Standl. | Standley's bloodleaf | Amaranthaceae
|
| IRKE | Iresine keyensis Millsp. | Iresine flavescens | Amaranthaceae
|