Hymenocallis latifolia 'Clone 5'

Hymenocallis latifolia 'Clone 6'

Hymenocallis occidentalis var. eulae

Hymenocallis riparia

Hymenoxys hoopesii

Hyophorbe verschaffeltii

Hypericum 'Gemo'

Hypericum androsaemum 'Albury Purple'

Hypericum androsaemum 'Prince Flair'

Hypericum ascyron

Hypericum aucheri

Hypericum beanii

Hypericum calycinum 'NCHC1'

Hypericum frondosum 'Sunburst'

Hypericum kalmianum

Hypericum kalmianum 'Ames'

Hypericum kalmianum 'Cfflpc-1'

Hypericum kalmianum 'Deppe'

Hypericum kalmianum 'PIIHYP-I'

Hypericum kalmianum 'SMHKBF'

Hypericum linarioides

Hypericum orientale

Hypericum perforatum

Hypericum pulchrum

Hypericum x hidcoteense 'Hidcote'