Last updated October 1, 2009
| Name | Family | Nativity |
| Echeveria affinis | Crassulaceae | Mexico |
| Echeveria agavoides v. multifida | Crassulaceae | Mexico |
| Echeveria albicans | Crassulaceae | Mexico |
| Echeveria alpinia | Crassulaceae | Mexico |
| Echeveria cante | Crassulaceae | Mexico |
| Echeveria coccinea | Crassulaceae | E Mexico |
| Echeveria colorata | Crassulaceae | Mexico |
| Echeveria colorata v. brandtii | Crassulaceae | Mexico |
| Echeveria compressicaulis | Crassulaceae | Venezuela |
| Echeveria cv. Afterglow | Crassulaceae | |
| Echeveria cv. Cinderella | Crassulaceae | |
| Echeveria cv. Doris Taylor | Crassulaceae | |
| Echeveria cv. Imbricata | Crassulaceae | |
| Echeveria cv. Princess Lace | Crassulaceae | |
| Echeveria cv. Pulv-Oliver | Crassulaceae | |
| Echeveria cv. Tippy | Crassulaceae | |
| Echeveria elegans | Crassulaceae | Mexico |
| Echeveria gigantea | Crassulaceae | Mexico |
| Echeveria halbingeri | Crassulaceae | Mexico |
| Echeveria laui | Crassulaceae | Mexico |
| Echeveria leucotricha | Crassulaceae | Mexico |
| Echeveria lilacina | Crassulaceae | Mexico |
| Echeveria macdougallii | Crassulaceae | Mexico |
| Echeveria nodulosa | Crassulaceae | Mexico |
| Echeveria pulidonis | Crassulaceae | Mexico |
| Echeveria pulvinata v. nova | Crassulaceae | Mexico |
| Echeveria runyonii | Crassulaceae | Mexico |
| Echeveria runyonii cv. Topsy Turvy | Crassulaceae | |
| Echeveria sp. | Crassulaceae | |
| Echeveria subalpina | Crassulaceae | Mexico |
| Echeveria subsessilis | Crassulaceae | Mexico |
| Echeveria tolimanensis | Crassulaceae | Mexico |
| Echeveria x agavoides | Crassulaceae | |
| Echeveria x imbricata | Crassulaceae | |
| Echinacea purpurea | Asteraceae | E & Cen North America |
| Echinacea purpurea cv. Bravado | Asteraceae | |
| Echinacea purpurea cv. White Swan | Asteraceae | |
| Echinocactus grusonii | Cactaceae | Cen Mexico |
| Echinocactus grusonii v albispinus | Cactaceae | |
| Echinocactus platyacanthus | Cactaceae | N & Cen. Mexico |
| Echinocereus barthelowanus | Cactaceae | Mexico |
| Echinocereus berlandieri | Cactaceae | Costa Rica |
| Echinocereus bonkerae | Cactaceae | Arizona |
| Echinocereus knippelianus | Cactaceae | Mexico(Coahuila) |
| Echinocereus pensilis | Cactaceae | Mexico |
| Echinocereus pentalophus | Cactaceae | S Texas to N Mexico |
| Echinocereus schmollii | Cactaceae | Mexico(Queretaro) |
| Echinocereus sp. | Cactaceae | |
| Echinodorus cordifolius | Alismataceae | S & Cen U.S. to Mexico |
| Echinodorus uruguayensis | Alismataceae | South America |
| Echinolobivia cv. Glorius | Cactaceae | |
| Echinopsis arboricola | Cactaceae | S Bolivia, N Argentina |
| Echinopsis atacamensis ssp pasacana | Cactaceae | Argentina |
| Echinopsis atacamensis ssp. pasacana | Cactaceae | Argentina, Bolivia |
| Echinopsis bruchii | Cactaceae | Argentina |
| Echinopsis calochlora | Cactaceae | Brazil |
| Echinopsis candicans | Cactaceae | Argentina |
| Echinopsis candicans v. gladiatus | Cactaceae | Argentina |
| Echinopsis candicans v. robustior | Cactaceae | Argentina |
| Echinopsis cephalomacrostibus | Cactaceae | S Peru |
| Echinopsis chilensis | Cactaceae | Chile |
| Echinopsis chilensis v. longispinus | Cactaceae | Chile |
| Echinopsis chiloensis | Cactaceae | Chile |
| Echinopsis coquimbana | Cactaceae | Chile |
| Echinopsis crassicaulis | Cactaceae | N Argentina |
| Echinopsis cv. Betty’s Gold | Cactaceae | |
| Echinopsis cv. Galaxy | Cactaceae | |
| Echinopsis cv. Stars and Stripes | Cactaceae | |
| Echinopsis deserticola | Cactaceae | Chile |
| Echinopsis ferox | Cactaceae | Bolivia |
| Echinopsis hertrichiana | Cactaceae | SE Peru |
| Echinopsis huascha | Cactaceae | Argentina |
| Echinopsis huascha hybrid | Cactaceae | |
| Echinopsis hybrid | Cactaceae | |
| Echinopsis lageniformis | Cactaceae | Bolivia(La Paz) |
| Echinopsis lamprochlora | Cactaceae | Bolivia |
| Echinopsis litoralis | Cactaceae | Chile |
| Echinopsis macrogona | Cactaceae | Bolivia |
| Echinopsis mamillosa ssp. sylvatica | Cactaceae | Argentina |
| Echinopsis maximilliana | Cactaceae | N Bolivia, S Peru |
| Echinopsis pachanoi | Cactaceae | Ecuador, Peru |
| Echinopsis peruvianus | Cactaceae | Ecuador, Peru |
| Echinopsis robinsoniorum | Cactaceae | |
| Echinopsis saltensis | Cactaceae | N Argentina |
| Echinopsis santaensis | Cactaceae | Peru |
| Echinopsis schickendantzii | Cactaceae | NW Argentina |
| Echinopsis sp. | Cactaceae | |
| Echinopsis sp. | Cactaceae | Mexico |
| Echinopsis sp. | Cactaceae | S Peru |
| Echinopsis spachiana | Cactaceae | W Argentina |
| Echinopsis spachiana hybrid | Cactaceae | |
| Echinopsis strigosa | Cactaceae | W Argentina |
| Echinopsis tacaquirensis | Cactaceae | Bolivia(Cochabamba) |
| Echinopsis tarijensis | Cactaceae | S Bolivia to N Argentina |
| Echinopsis terscheckii | Cactaceae | N Argentina |
| Echinopsis thelegonoides | Cactaceae | N Argentina |
| Echinopsis tulhuayacensis | Cactaceae | Peru |
| Echinopsis vasquezii | Cactaceae | Bolivia(Santa Cruz) |
| Echium candicans | Boraginaceae | Portugal(Madeira Is.) |
| Echium handiense | Boraginaceae | |
| Echium pininana | Boraginaceae | Spain(Canary Islands) |
| Echium vulcanorum | Boraginaceae | Cape Verde Islands |
| Eichhornia crassipes | Pontederiaceae | African Tropics |
| Encephalartos aemulans | Zamiaceae | South Africa(KwaZulu-Natal) |
| Encephalartos altensteinii | Zamiaceae | South Africa |
| Encephalartos altensteinii x trispinosus x altensteini | Zamiaceae | |
| Encephalartos altensteinii x trispinosus x natalensis | Zamiaceae | |
| Encephalartos aplanatus | Zamiaceae | Swaziland |
| Encephalartos arenarius | Zamiaceae | South Africa |
| Encephalartos arenarius x lehmannii | Zamiaceae | |
| Encephalartos barteri | Zamiaceae | Nigeria, Ghana |
| Encephalartos bubalinus | Zamiaceae | Tanzania |
| Encephalartos caffer | Zamiaceae | South Africa |
| Encephalartos cerinus | Zamiaceae | South Africa |
| Encephalartos cerinus | Zamiaceae | South Africa(KwaZulu-Natal) |
| Encephalartos chimanimaniensis | Zamiaceae | Mozambique, Zimbabwe |
| Encephalartos concinnus | Zamiaceae | Zimbabwe |
| Encephalartos cupidus | Zamiaceae | South Africa(Mpumalanga) |
| Encephalartos cycadifolius | Zamiaceae | South Africa(E Cape Prov.) |
| Encephalartos dyerianus | Zamiaceae | South Africa(Northern Prov.) |
| Encephalartos eugene-maraisii | Zamiaceae | South Africa |
| Encephalartos ferox | Zamiaceae | SE Africa |
| Encephalartos ferox | Zamiaceae | South Africa(E. Cape Prov.) |
| Encephalartos friderici-guilielmi | Zamiaceae | South Africa |
| Encephalartos gratus | Zamiaceae | Malawi, Mozambique |
| Encephalartos gratus x woodii | Zamiaceae | |
| Encephalartos heenanii | Zamiaceae | South Africa |
| Encephalartos heenanii x longifolius | Zamiaceae | |
| Encephalartos hildebrandtii | Zamiaceae | Kenya, Tanzania |
| Encephalartos hildebrandtii | Zamiaceae | Kenya, Tanzania, Zanzibar |
| Encephalartos horridus | Zamiaceae | South Africa |
| Encephalartos horridus x longifolius | Zamiaceae | |
| Encephalartos inopinus | Zamiaceae | South Africa(North-West Prov.) |
| Encephalartos ituriensis | Zamiaceae | Dem. Republic of Congo |
| Encephalartos ituriensis | Zamiaceae | Dem. Republic of the Congo |
| Encephalartos kisambo | Zamiaceae | Kenya |
| Encephalartos lanatus | Zamiaceae | South Africa(Mpumalanga) |
| Encephalartos latifrons | Zamiaceae | South Africa |
| Encephalartos latifrons x altensteinii | Zamiaceae | South Africa |
| Encephalartos laurentianus | Zamiaceae | Dem Rep of Congo, Angola |
| Encephalartos lebomboensis | Zamiaceae | South Africa(Mpumalanga) |
| Encephalartos lehmannii | Zamiaceae | South Africa(E. Cape Prov.) |
| Encephalartos longifolius | Zamiaceae | South Africa |
| Encephalartos longifolius | Zamiaceae | South Africa(E. Cape Prov.) |
| Encephalartos mackenzei | Zamiaceae | Sudan |
| Encephalartos macrostrobilus | Zamiaceae | Uganda |
| Encephalartos manikensis | Zamiaceae | Zimbabwe and Mozambique |
| Encephalartos middelburgensis | Zamiaceae | South Africa |
| Encephalartos msinganus | Zamiaceae | South Africa(KwaZulu-Natal) |
| Encephalartos munchii | Zamiaceae | Mozambiqie |
| Encephalartos munchii | Zamiaceae | Mozambique |
| Encephalartos natalensis | Zamiaceae | South Africa |
| Encephalartos ngoyanus | Zamiaceae | South Africa |
| Encephalartos paucidentatus | Zamiaceae | South Africa |
| Encephalartos poggei | Zamiaceae | Dem. Republic of the Congo |
| Encephalartos princeps | Zamiaceae | South Africa |
| Encephalartos pterogonus | Zamiaceae | Mozambique |
| Encephalartos sclavoi | Zamiaceae | Tanzania |
| Encephalartos senticosus | Zamiaceae | South Africa(KwaZulu-Natal) |
| Encephalartos septentrionalis | Zamiaceae | Uganda, Sudan |
| Encephalartos sp. | Zamiaceae | |
| Encephalartos sp. nov. “Chiwala” | Zamiaceae | |
| Encephalartos sp. nov. “Torreyi” | Zamiaceae | |
| Encephalartos transvenosus | Zamiaceae | South Africa(Northern Prov.) |
| Encephalartos trispinosus | Zamiaceae | South Africa(Northern Prov.) |
| Encephalartos turneri | Zamiaceae | Mozambique |
| Encephalartos umbeluziensis | Zamiaceae | Mozambique, Swaziland |
| Encephalartos villosus | Zamiaceae | SE Africa |
| Encephalartos villosus x altensteinii | Zamiaceae | |
| Encephalartos whitelockii | Zamiaceae | Uganda |
| Encephalartos woodii | Zamiaceae | South Africa |
| Ensete ventricosum | Musaceae | Ethiopia |
| Ensete ventricosum v. glaucum | Musaceae | |
| Enterolobium cyclocarpum | Mimosaceae | African Tropics |
| Epidendrum ibaguense | Orchidaceae | Cen & South America |
| Epidendrum sp. | Orchidaceae | |
| Epidendrum x obrienianum | Orchidaceae | |
| Epiphyllum anguliger | Cactaceae | S Mexico |
| Epiphyllum anguliger cv. Dancing Dragons | Cactaceae | Mexico |
| Epiphyllum crenatum v. chichicastenango | Cactaceae | Guatemala |
| Epiphyllum cv. Apache | Cactaceae | |
| Epiphyllum cv. Argus | Cactaceae | |
| Epiphyllum cv. Bayou Belle | Cactaceae | |
| Epiphyllum cv. C. P. Astronaut | Cactaceae | |
| Epiphyllum cv. Catalina | Cactaceae | |
| Epiphyllum cv. Climax | Cactaceae | |
| Epiphyllum cv. Concerto | Cactaceae | |
| Epiphyllum cv. Conway’s Giant | Cactaceae | |
| Epiphyllum cv. Cooperville | Cactaceae | |
| Epiphyllum cv. George French | Cactaceae | |
| Epiphyllum cv. Magic Fire | Cactaceae | |
| Epiphyllum cv. Monastery Garden | Cactaceae | |
| Epiphyllum cv. Montecito | Cactaceae | |
| Epiphyllum cv. Pacesetter | Cactaceae | |
| Epiphyllum cv. Prairie Rose | Cactaceae | |
| Epiphyllum cv. Space Rocket | Cactaceae | |
| Epiphyllum cv. Sparkle | Cactaceae | |
| Epiphyllum cv. Virginia Strong | Cactaceae | |
| Epiphyllum hookeri | Cactaceae | Mexico to Cen America |
| Epiphyllum hybrid | Cactaceae | |
| Epiphyllum laui | Cactaceae | Mexico |
| Epiphyllum oxypetalum | Cactaceae | Mexico to Brazil |
| Epiphyllum pittieri | Cactaceae | Costa Rica |
| Epiphyllum sp. | Cactaceae | |
| Epiphyllum thomasianum | Cactaceae | S Mexico to Nicauragua |
| Equisetum hyemale | Equisetaceae | Eurasia, Pacific North America |
| Eragrostis elliottii | Poaceae | SE United States |
| Erigeron karvinskianus | Asteraceae | Mexico |
| Erigeron x moerheimii | Asteraceae | |
| Eriogonum fasciculatum | Polygonaceae | USA |
| Eriogonum fasciculatum | Polygonaceae | Western US |
| Eriogonum giganteum | Polygonaceae | S California |
| Eriogonum giganteum | Polygonaceae | S. California |
| Eriogonum grande v. rubescens | Polygonaceae | California |
| Eriogonum sp. | Polygonaceae | |
| Eriogonum wrightii | Polygonaceae | Sierra Nevada to Mtns of S CA |
| Eriosyce aspillagae | Cactaceae | Chile |
| Eriosyce chilensis v. chilensis | Cactaceae | Chile |
| Eriosyce crispa ssp. crispa | Cactaceae | Chile |
| Eriosyce curvispina v. tuberisulcata | Cactaceae | Chile(Valparaiso) |
| Eriosyce heinrichiana v. intermedia | Cactaceae | Chile |
| Eriosyce limariensis | Cactaceae | Chile |
| Eriosyce napina | Cactaceae | Chile |
| Eriosyce napina ssp. napina | Cactaceae | Chile |
| Eriosyce occulta | Cactaceae | Chile |
| Eriosyce odieri ssp. glabrascens | Cactaceae | Chile |
| Eriosyce senilis ssp. elquinsis | Cactaceae | Chile |
| Eriosyce sociabilis | Cactaceae | Chile |
| Eriosyce sp. | Cactaceae | Mexico |
| Eriosyce subgibbosa v. nigrihorrida | Cactaceae | Chile |
| Eriosyce taltalensis | Cactaceae | Chile |
| Eriosyce tenebrica | Cactaceae | Chile |
| Erodium chamaedryoides | Geraniaceae | Spain(Balearic Is.), Corsica |
| Erodium chrysanthum | Geraniaceae | Greece |
| Erodium x variabile cv. Bishop’s Form | Geraniaceae | |
| Eryngium sp. | Umbellaceae | |
| Erythrina coralloides | Fabaceae | Arizona, NE & Cen Mexico |
| Erythrina flabelliformis | Fabaceae | Arizona, New Mexico, W Mexico |
| Erythrina herbacea v. nigrans | Fabaceae | SE U.S., Mexico |
| Erythrina sp. | Fabaceae | |
| Escholtzia californica | Papaveraceae | California, Oregon |
| Escontria chiotilla | Cactaceae | S Mexico |
| Escontria sp. | Cactaceae | |
| Espostoa blossfeldiorum | Cactaceae | N Peru |
| Espostoa guentheri | Cactaceae | Bolivia |
| Espostoa huanucoensis | Cactaceae | Ecuador, Peru |
| Espostoa lanata | Cactaceae | S Ecuador to N Peru |
| Espostoa melanostele | Cactaceae | Cen Peru |
| Espostoa senilis | Cactaceae | Peru(Ancash) |
| Espostoa sp. | Cactaceae | |
| Espostoa sp. | Cactaceae | Peru |
| Espostoa sp. nov. “Canyon del Pato” | Cactaceae | Peru |
| Eucalyptus camaldulensis | Myrtaceae | Australia |
| Eucalyptus citriodora | Myrtaceae | Australia(Queensland) |
| Eucalyptus cladocalyx | Myrtaceae | Australia |
| Eucalyptus erythrocorys | Myrtaceae | W Australia |
| Eucalyptus globulus | Myrtaceae | Australia |
| Eucalyptus grandis | Myrtaceae | Australia(Queensland,NSW) |
| Eucalyptus incrassata | Myrtaceae | Australia |
| Eucalyptus leucoxylon | Myrtaceae | Australia |
| Eucalyptus melliodora | Myrtaceae | Australia |
| Eucalyptus robusta | Myrtaceae | Australia |
| Eucalyptus sp. | Myrtaceae | W Australia |
| Eucalyptus stellulata | Myrtaceae | Australia |
| Eucalyptus torquata | Myrtaceae | W Australia |
| Euclea racemosa | Ebenaceae | South Africa |
| Eucomis autumnalis | Hyacinthaceae | South Africa |
| Eucomis pole-evansii | Hyacinthaceae | South Africa |
| Eucommia ulmoides | Eucommiaceae | Cen China |
| Eulychnia acida | Cactaceae | Chile |
| Eulychnia breviflora | Cactaceae | N Chile |
| Eulychnia castanea | Cactaceae | Chile |
| Eulychnia saint-pieana v. floresiana | Cactaceae | Chile |
| Eulychnia sp. | Cactaceae | N Chile |
| Euphorbia abyssinica | Euphorbiaceae | Ethiopia, Somalia |
| Euphorbia aff. inconstantia | Euphorbiaceae | South Africa |
| Euphorbia aff. xylophilloides | Euphorbiaceae | Madagascar |
| Euphorbia alluaudii | Euphorbiaceae | Madagascar |
| Euphorbia ammak | Euphorbiaceae | Saudi Arabia |
| Euphorbia ammak cv. Variegata | Euphorbiaceae | |
| Euphorbia aureoviridiflora | Euphorbiaceae | Madagascar |
| Euphorbia barnardii | Euphorbiaceae | South Africa |
| Euphorbia bubalina | Euphorbiaceae | South Africa |
| Euphorbia caducifolia | Euphorbiaceae | India |
| Euphorbia canariensis | Euphorbiaceae | Spain |
| Euphorbia canariensis | Euphorbiaceae | Spain(Canary Islands) |
| Euphorbia capmanambatoensis | Euphorbiaceae | Madagascar |
| Euphorbia capsaintemariensis | Euphorbiaceae | Madagascar |
| Euphorbia capuronii | Euphorbiaceae | Madagascar |
| Euphorbia caput-medusae | Euphorbiaceae | South Africa |
| Euphorbia cf. atrispina | Euphorbiaceae | South Africa |
| Euphorbia cf. breviarticulata | Euphorbiaceae | Kenya |
| Euphorbia cf. croizatii | Euphorbiaceae | Madagascar |
| Euphorbia characias | Euphorbiaceae | Mediterranean |
| Euphorbia clandestina | Euphorbiaceae | South Africa |
| Euphorbia coerulescens | Euphorbiaceae | South Africa |
| Euphorbia confinalis ssp. rhodesica | Euphorbiaceae | Zimbabwe |
| Euphorbia croizatii | Euphorbiaceae | Madagascar |
| Euphorbia cylindrifolia | Euphorbiaceae | Madagascar |
| Euphorbia decaryi v. spirosticha | Euphorbiaceae | Madagascar |
| Euphorbia delphinensis | Euphorbiaceae | Madagascar |
| Euphorbia didiereoides | Euphorbiaceae | Madagascar |
| Euphorbia echinus | Euphorbiaceae | Morocco |
| Euphorbia enopla | Euphorbiaceae | South Africa |
| Euphorbia erythrocucullata | Euphorbiaceae | Madagascar |
| Euphorbia esculenta | Euphorbiaceae | South Africa(E. Cape Province) |
| Euphorbia francoisii | Euphorbiaceae | Madagascar |
| Euphorbia fruticosa | Euphorbiaceae | Saudi Arabia, Yemen |
| Euphorbia gorgonis | Euphorbiaceae | South Africa |
| Euphorbia grandicornis | Euphorbiaceae | S & E Africa |
| Euphorbia grandidens | Euphorbiaceae | South Africa |
| Euphorbia hamata | Euphorbiaceae | South Africa, Namibia |
| Euphorbia hofstaetteri | Euphorbiaceae | Madagascar |
| Euphorbia horombensis | Euphorbiaceae | Madagascar |
| Euphorbia horrida | Euphorbiaceae | South Africa |
| Euphorbia horrida | Euphorbiaceae | South Africa(W. Cape Province) |
| Euphorbia horrida v. major | Euphorbiaceae | South Africa |
| Euphorbia horrida v. nova | Euphorbiaceae | South Africa |
| Euphorbia horrida v. striata | Euphorbiaceae | South Africa |
| Euphorbia iharanae | Euphorbiaceae | Madagascar |
| Euphorbia inconstantia | Euphorbiaceae | South Africa |
| Euphorbia inermis | Euphorbiaceae | South Africa(E. Cape Province) |
| Euphorbia ingens | Euphorbiaceae | South Africa |
| Euphorbia kamponii | Euphorbiaceae | Madagascar |
| Euphorbia lactea cv. Cristata | Euphorbiaceae | |
| Euphorbia lamarckii ssp. regisjubae | Euphorbiaceae | Spain(Canary Islands) |
| Euphorbia lambii | Euphorbiaceae | Spain(Canary Islands) |
| Euphorbia ledienii | Euphorbiaceae | South Africa(E. Cape Province) |
| Euphorbia lenewtonii | Euphorbiaceae | Tanzania |
| Euphorbia makallensis | Euphorbiaceae | Ethiopia |
| Euphorbia mammillaris | Euphorbiaceae | South Africa |
| Euphorbia milii | Euphorbiaceae | Madagascar |
| Euphorbia milii v. hislopii | Euphorbiaceae | Madagascar |
| Euphorbia milii v. milii | Euphorbiaceae | Madagascar |
| Euphorbia milii v. nov. “isaloensis” | Euphorbiaceae | Madagascar |
| Euphorbia milii v. vulcani | Euphorbiaceae | Madagascar |
| Euphorbia millii hybrid | Euphorbiaceae | |
| Euphorbia misera | Euphorbiaceae | Baja California |
| Euphorbia namuskluftensis | Euphorbiaceae | Namibia |
| Euphorbia neohumbertii | Euphorbiaceae | Madagascar |
| Euphorbia neriifolia | Euphorbiaceae | E India |
| Euphorbia obesa | Euphorbiaceae | South Africa |
| Euphorbia obovalifolia | Euphorbiaceae | E Africa |
| Euphorbia ornithopus | Euphorbiaceae | South Africa |
| Euphorbia polyacantha v. rosenii | Euphorbiaceae | Ethiopia |
| Euphorbia polygona | Euphorbiaceae | South Africa |
| Euphorbia polygona cv. Snowflake | Euphorbiaceae | |
| Euphorbia resinifera | Euphorbiaceae | Morocco |
| Euphorbia richardsiae ssp. richardsiae | Euphorbiaceae | Malawi |
| Euphorbia rossii | Euphorbiaceae | Madagascar |
| Euphorbia sp. | Euphorbiaceae | |
| Euphorbia spinicapsula | Euphorbiaceae | |
| Euphorbia stellata | Euphorbiaceae | South Africa |
| Euphorbia stellispina | Euphorbiaceae | South Africa |
| Euphorbia stellispina | Euphorbiaceae | South Africa(N. Cape Province) |
| Euphorbia stenoclada ssp. ambatofinandranae | Euphorbiaceae | Madagascar |
| Euphorbia stenoclada ssp. stenoclada | Euphorbiaceae | Madagascar |
| Euphorbia tanquahuete | Euphorbiaceae | Mexico(Jalisco) |
| Euphorbia tirucalli | Euphorbiaceae | |
| Euphorbia tortirama | Euphorbiaceae | South Africa |
| Euphorbia triangularis | Euphorbiaceae | South Africa |
| Euphorbia trigona | Euphorbiaceae | Unknown |
| Euphorbia tubiglans | Euphorbiaceae | South Africa(W. Cape Province) |
| Euphorbia turbiniformis | Euphorbiaceae | Somalia |
| Eupomatia laurina | Eupomatiaceae | E Australia, New Guinea |
