Sesama genus Penstemon (437 spesies):

• Firleaf beardtongue (Penstemon abietinus)
• Absaroka range beardtongue (Penstemon absarokensis)
• Stemless beardtongue (Penstemon acaulis)
• Sharpleaf penstemon (Penstemon acuminatus)
• Sharpleaf penstemon (Penstemon acuminatus var. acuminatus)
• Sharpleaf penstemon (Penstemon acuminatus var. latebracteatus)
• Los alamos beardtongue (Penstemon alamosensis)
• Alberta beardtongue (Penstemon albertinus)
• White penstemon (Penstemon albidus)
• White river beardtongue (Penstemon albifluvis)
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Sesama famili Scrophulariaceae (2656 spesies):

• Smallflower false foxglove (Agalinis paupercula var. paupercula)
• Slenderleaf false foxglove (Agalinis tenuifolia var. tenuifolia)
• Smooth yellow false foxglove (Aureolaria flava var. flava)
• Largeflower yellow false foxglove (Aureolaria grandiflora var. grandiflora)
• Entireleaf yellow false foxglove (Aureolaria laevigata)
• Fernleaf yellow false foxglove (Aureolaria pedicularia var. pedicularia)
• White alling (Bontia daphnoides)
• Fountain butterflybush (Buddleja alternifolia)
• Bunga harumsari (Buddleja asiatica)
• Orange eye butterflybush (Buddleja davidii)
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