Herbaceous Plants
A division of the Camden Park catalogues that is poorly defined. Annuals and perennial herbs were included here. This is retained but Annuals are also separately identified.
Nigella damascena L.
Fully hardy, readily self-seeding annual with finely divided bright green foliage, bearing pale blue flowers surrounded by a ruff of foliage in early spring to summer. [RHSE, Hortus].
Nigella damascena L. var. romana
See Nigella damascena L. for a description of the species. I have no specific description of romana but Jane Loudon, quoted here, suggests that it is merely a synonym of damascena.
Nolana humifusa (Gouan) Johnst.
Half hardy spreading perennial with lilac-blue flowers with white, lilac-blue streaked, throats in summer. To 15cm spreading. [RHSE, Hortus].
Nymphaea gigantea Hook.
Aquatic perennial with rounded, toothed leaves and star-shaped blue flowers, to 30cm across. [RHSE, Hortus, FNSW].
Oenothera acaulis Cav.
Borderline fully hardy, clump-forming, short-lived perennial with trumpet-shaped white flowers opening in the evening, turning pink the next day, in summer. To 15cm. [RHSE, Hortus].
Oenothera biennis L. var. grandiflora (L‘Hér.) Lindl.
Fully hardy, erect, hairy annual or biennial with bowl-shaped fragrant flowers opening in the evening, initially pale-yellow and darkening to deep golden-yellow, from summer to autumn. The variety grandiflora has larger flowers than the species. To 1.5m. [RHSE, Hortus].
Oenothera bifrons D.Don
A nearly erect annual or short-lived perennial with purple-tinged stems, alternate, smooth, broadly lance-shaped leaves, and solitary, axillary, bright canary yellow flowers. [BM t.3764/1839].
Oenothera elata Kunth subsp. hookeri (Torr. & A.Gray) W.Dietr. & W.L.Wagner
Fully hardy erect perennial or biennial with lance-shaped leaves and numerous cup-shaped flowers which, opening at dusk, start pale yellow and age to orange-red, in summer. To 90cm. [RHSE, Hortus].
Oenothera fruticosa L.
Fully hardy, erect perennial or biennial with branched, red-tinged, hairy stems, ovate to lance-shaped, toothed leaves, to 11cm long, and deep yellow saucer- to cup-shaped flowers opening during the day from late spring to late summer. To 90cm. [RHSE, Hortus].
Oenothera fruticosa L. subsp. glauca (Michx.) Standl.
Fully hardy, erect perennial or biennial with light yellow saucer- to cup-shaped flowers opening during the day from late spring to late summer. To 90cm. [RHSE, Hortus].
Oenothera odorata Jacq.
Fully hardy, erect, rosette-forming perennial with somewhat crinkled leaves, red-tinged stems and fragrant yellow flowers opening at night, turning red as they age, in summer. To 90cm. [RHSD, Hortus].
Oenothera rosea Ait.
Fully hardy, somewhat twiggy, shrubby perennial with ovate to lance-shaped leaves, pinnatifid towards the base, and profuse rose-coloured flowers, opening during the day, in summer. To 60cm. [RHSD, Hortus].
Oenothera speciosa Nutt.
Fully hardy, sometimes invasive perennial, spreading by runners, with solitary, saucer-shaped, very fragrant white flowers, sometimes aging to pink, in summer and autumn. To 30cm. [RHSE, Hortus].
