| African tuliptree |
Spathodea campanulata |
1 |
| African violet |
Saintpaulia teitensis |
1 |
| Allegheny monkeyflower |
Mimulus ringens |
1 |
| alpine besseya |
Besseya alpina |
7 |
| alpine sawsepal penstemon |
Penstemon glaber var. alpinus |
1 |
| American alpine speedwell |
Veronica wormskjoldii |
5 |
| American bluehearts |
Buchnera americana |
2 |
| American speedwell |
Veronica americana |
8 |
| American waterwillow |
Justicia americana |
1 |
| Asian mazus |
Mazus pumilus |
1 |
| beach false foxglove |
Agalinis fasciculata |
5 |
| beardlip penstemon |
Penstemon barbatus |
9 |
| beardtongues |
Penstemon spp. |
2 |
| beechdrops |
Epifagus virginiana |
1 |
| Bengal trumpet |
Thunbergia grandiflora |
8 |
| black poui |
Jacaranda mimosifolia |
2 |
| blackeyed Susan vine |
Thunbergia alata |
3 |
| blueflower butterwort |
Pinguicula caerulea |
17 |
| botellita |
Mitraria coccinea |
3 |
| bracted lousewort |
Pedicularis bracteosa |
2 |
| broadbeard beardtongue |
Penstemon angustifolius |
1 |
| Browne's blechum |
Blechum pyramidatum |
1 |
| Canada toadflax |
Nuttallanthus canadensis |
4 |
| Canadian lousewort |
Pedicularis canadensis |
8 |
| capitate lousewort |
Pedicularis capitata |
5 |
| Caribbean trumpet-tree |
Tabebuia aurea |
5 |
| catclaw-vine |
Macfadyena unguis-cati |
18 |
| Chinese privet |
Ligustrum sinense |
13 |
| Chinese violet |
Asystasia gangetica |
7 |
| Colorado beardtongue |
Penstemon auriberbis |
1 |
| common mullein |
Verbascum thapsus |
3 |
| corn speedwell |
Veronica arvensis |
2 |
| cow-wheat |
Melampyrum lineare |
2 |
| Crandall's beardtongue |
Penstemon crandallii |
8 |
| Crandall's beardtongue |
Penstemon crandallii ssp. procumbens |
7 |
| crested Philippine violet |
Barleria cristata |
2 |
| crossvine |
Bignonia capreolata |
13 |
| Culver's root |
Veronicastrum virginicum |
3 |
| Dalmatian toadflax |
Linaria dalmatica |
2 |
| Davidson's penstemon |
Penstemon davidsonii |
2 |
| devil's-claw |
Proboscidea louisianica |
3 |
| dwarf purple monkeyflower |
Mimulus nanus |
1 |
| Eaton penstemon |
Penstemon eatonii |
2 |
| elephanthead lousewort |
Pedicularis groenlandica |
10 |
| entireleaf Indian paintbrush |
Castilleja indivisa |
2 |
| estrellita |
Asteranthera ovata |
3 |
| European privet |
Ligustrum vulgare |
5 |
| false foxglove |
Agalinis spp. |
1 |
| fernleaf yellow false foxglove |
Aureolaria pedicularia |
5 |
| field speedwell |
Veronica agrestis |
2 |
| flamevine |
Pyrostegia venusta |
5 |
| flaxleaf false foxglove |
Agalinis linifolia |
6 |
| floating bladderwort |
Utricularia inflata |
2 |
| Florida bluehearts |
Buchnera floridana |
3 |
| foxglove |
Digitalis purpurea |
4 |
| fringeleaf wild petunia |
Ruellia humilis |
2 |
| front range beardtongue |
Penstemon virens |
1 |
| germander speedwell |
Veronica chamaedrys |
4 |
| giant lousewort |
Pedicularis procera |
12 |
| giant red Indian paintbrush |
Castilleja miniata |
11 |
| hairy lousewort |
Pedicularis hirsuta |
2 |
| Hall's beardtongue |
Penstemon hallii |
1 |
| Harbour's beardtoungue |
Penstemon harbourii |
7 |
| Indian paintbrush |
Castilleja spp. |
2 |
| isoloma |
Isoloma spp. |
2 |
| James' beardtongue |
Penstemon jamesii |
9 |
| Japanese privet |
Ligustrum japonicum |
19 |
| jasmine |
Jasminum spp. |
4 |
| lady's slipper |
Calceolaria tenella |
1 |
| lanceleaf figwort |
Scrophularia lanceolata |
5 |
| Langsdorf's lousewort |
Pedicularis langsdorffii |
6 |
| lilac |
Syringa spp. |
1 |
| limestone wild petunia |
Ruellia strepens |
2 |
| littleflower penstemon |
Penstemon procerus |
2 |
| lollipop-plant |
Pachystachys lutea |
1 |
| looseflower water-willow |
Justicia ovata var. lanceolata |
1 |
| lousewort |
Pedicularis spp. |
2 |
| maiden blue eyed mary |
Collinsia parviflora |
2 |
| meadow lousewort |
Pedicularis crenulata |
9 |
| monkeyflower |
Mimulus spp. |
2 |
| Monnier waterhyssop |
Bacopa monnieri |
1 |
| moth mullein |
Verbascum blattaria |
1 |
| mullein foxglove |
Dasistoma macrophylla |
2 |
| naio |
Myoporum sandwicense |
5 |
| northern catalpa |
Catalpa speciosa |
3 |
| oblongleaf snakeherb |
Dyschoriste oblongifolia |
12 |
| Olympic mullein |
Verbascum olympicum |
1 |
| oneflowered broomrape |
Orobanche uniflora |
3 |
| oneside penstemon |
Penstemon unilateralis |
1 |
| Parry's lousewort |
Pedicularis parryi |
2 |
| penstemon |
Penstemon ramaleyi |
8 |
| pineneedle beardtongue |
Penstemon pinifolius |
3 |
| pink trumpet-tree |
Tabebuia rosea |
5 |
| pink turtlehead |
Chelone lyonii |
1 |
| polkadots |
Dyschoriste linearis |
1 |
| purple false foxglove |
Agalinis purpurea |
4 |
| purple monkeyflower |
Mimulus lewisii |
2 |
| purslane speedwell |
Veronica peregrina |
2 |
| Raup's Indian paintbrush |
Castilleja raupii |
2 |
| redrattle |
Pedicularis flammea |
7 |
| Rocky Mountain penstemon |
Penstemon strictus |
15 |
| Rocky Mountain snowlover |
Chionophila jamesii |
5 |
| royal penstemon |
Penstemon speciosus |
3 |
| Rydberg's penstemon |
Penstemon rydbergii |
17 |
| sand lady's slipper |
Calceolaria uniflora |
1 |
| scarlet Indian paintbrush |
Castilleja coccinea |
10 |
| seep monkeyflower |
Mimulus guttatus |
8 |
| sesamum |
Sesamum radiatum |
1 |
| sharpsepal beardtongue |
Penstemon tenuis |
1 |
| sharpwing monkeyflower |
Mimulus alatus |
2 |
| showy penstemon |
Penstemon spectabilis |
1 |
| shrimpplant |
Justicia brandegeeana |
1 |
| shrubby whitevein |
Sanchezia speciosa |
1 |
| sickletop lousewort |
Pedicularis racemosa |
6 |
| sidebells penstemon |
Penstemon secundiflorus |
2 |
| small butterwort |
Pinguicula pumila |
15 |
| smooth yellow false foxglove |
Aureolaria flava var. flava |
8 |
| southern bladderwort |
Utricularia juncea |
2 |
| splitleaf Indian paintbrush |
Castilleja rhexiifolia |
4 |
| spring blue eyed Mary |
Collinsia verna |
1 |
| squirrel's tail |
Justicia betonica |
1 |
| stretchberry |
Forestiera pubescens |
6 |
| sudetic lousewort |
Pedicularis sudetica |
10 |
| sulphur Indian paintbrush |
Castilleja sulphurea |
2 |
| swamp lousewort |
Pedicularis lanceolata |
5 |
| Texas toadflax |
Nuttallanthus texanus |
8 |
| thymeleaf speedwell |
Veronica serpyllifolia |
10 |
| tiger beardtongue |
Penstemon mensarum |
15 |
| toadflax |
Nuttallanthus spp. |
12 |
| trumpetbush |
Tecoma spp. |
1 |
| trumpetcreeper |
Campsis radicans |
21 |
| trumpetflower |
Tecoma stans |
1 |
| Wasatch beardtongue |
Penstemon cyananthus |
2 |
| water mudwort |
Limosella aquatica |
2 |
| water speedwell |
Veronica anagallis-aquatica |
4 |
| wavyleaf Indian paintbrush |
Castilleja applegatei |
1 |
| wayside speedwell |
Veronica polita |
3 |
| weaselsnout |
Lagotis glauca |
1 |
| western Indian paintbrush |
Castilleja occidentalis |
4 |
| Whipple's penstemon |
Penstemon whippleanus |
17 |
| white fringetree |
Chionanthus virginicus |
6 |
| White River coraldrops |
Besseya plantaginea |
1 |
| white turtlehead |
Chelone glabra |
8 |
| white wand beardtongue |
Penstemon tubiflorus |
2 |
| wholeleaf Indian paintbrush |
Castilleja integra |
4 |
| wild petunia |
Ruellia caroliniensis |
4 |
| wonga wonga vine |
Pandorea pandorana |
1 |
| wood speedwell |
Veronica montana |
1 |
| Wyoming Indian paintbrush |
Castilleja linariifolia |
12 |
| yellow butterwort |
Pinguicula lutea |
4 |
| yellow glandweed |
Parentucellia viscosa |
4 |
| yellow owl's-clover |
Orthocarpus luteus |
3 |
| yellow toadflax |
Linaria vulgaris |
5 |
| yellow unicorn-plant |
Ibicella lutea |
1 |
