Notice

Colin Mills, compiler of the Hortus Camdenensis, died in late November 2012 after a short illness. As he always considered the Hortus his legacy, it is his family's intention to keep the site running in perpetuity. It will not, however, be updated in the near future.

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.

Campanula stricta L.

Rigid woody-based perennial with oblong leaves and a spike of sessile, tubular blue flowers.  To 50cm.  [RHSD].

Campanula trachelium L.

Fully hardy upright perennial with tubular, mid-blue to white flowers in mid and late summer.  To 90cm.  [RHSE, Hortus].

Carthamus campestris unidentified

Unidentified species.  I have found no reference to a plant called Carthamus campestris.

Catharanthus roseus (L.) G.Don

Frost-tender, woody-based, fleshy, evergreen perennial, erect at first, then spreading, with oblong leaves, to 5cm long, and pink, red or white, salverform flowers, to 4cm across, produced from the upper leaf axils in spring and summer.  To 60cm.  [RHSE, Hortus]. See also Catharanthus roseus (L.) G.Don var. albus.

Catharanthus roseus (L.) G.Don var. albus

See Catharanthus roseus (L.) G.Don.  Catharanthus roseus var. albus seems the most likely identification because Vinca alba was frequently described in the Victorian literature as a tender plant, along with Vinca rosea and another form, Vinca alba occulata, white with a red centre.  The following is from a discussion of Stove Vincas, making it quite clear that tender plants are under discussion.  ‘These old inhabitants of our stoves are neglected plants in many gardens, and in the majority entirely discarded.  It is to be regretted that such good and useful plants are cast aside to make room for others of perhaps less beauty and use.  Few plants are easier grown, or attain a good size quicker, if subjected to liberal treatment.  All the stove varieties make capital plants for exhibition purposes, and look magnificent amongst a collection of flowering-plants, when well grown and neatly trained.  They are even more striking in a collection of plants, especially V. alba and V. occulata, than many other plants grown for the purpose and exhibited. […] Vinca alba and its red-eyed variety V. occulata are the two most worthy of being grown.  V. rosea is not so serviceable, and its flowers are not very brilliant in colour.’ [The Gardener vol.15, p.392/1881].

Centaurea americana Nutt.

Annual with thin, lance-shaped, usually entire leaves and rose to purplish or white flowerheads, to 7.5cm across.  To 90cm.  [RHSD, Hortus].

Centaurea cyanus L.

Fully hardy annual with dark blue to pale blue, sometimes pink or white, flower heads in spring and summer. Highly variable in height, to 80cm.  [RHSE, Hortus].

Centranthus ruber (L.) DC.

Fully hardy, clump-forming, woody-based perennial with dense cymes of small, funnel-shaped, fragrant, white, pink or crimson flowers from late spring to late summer.  Self-seeds freely.  To 1m.  [RHSE, Hortus].

Ceratostigma plumbaginoides Bunge

Fully hardy, rhizomatous, spreading, woody-based perennial with upright, slender red stems, obovate, wavy-margined leaves, to 9cm long, colouring in autumn, and terminal spikes of bright blue flowers, to 2cm across, in summer.  To 45cm.  [RHSE, Hortus].

Chamaemelum nobile (L.) All.

Fully hardy, mat-forming, hairy, aromatic perennial with feathery leaves, to 5cm long, and long-staked daisy-like flowers, to 1.5cm across, in summer.  To 30cm.  [RHSE, Hortus].

Chirita sinensis Lindl.

Frost-tender evergreen perennial with flat rosettes of hairy, dark green leaves, sometimes veined with silver, and occasional white, flowers suffused with pinkish purple to mauve.  To 5cm.  [RHSE].

Chrysanthemum parthenium (L.) Pers. var. flore pleno

Upright perennial with much dissected leaves and dene panicles of small, double white flowers.  To 1m.  [RHSD, Hortus].

Clarkia amoena A.Nelson & J.F.Macbr. subsp. lindleyi (Dougl.) F.H.&M.E.Lewis

Fully hardy, erect annual with fluted, single or double, lilac to reddish pink flowers, with a dark red spot, in long shoots in summer.  To 75cm.  Lindleyi is a rather coarse form with lavender flowers, often streaked with white near the base, the dark red central spot often absent or represented by a small spot or line.  It can grow to 2m.  Once a very popular cottage garden plant.  [RHSE, Hortus].

Clarkia romanzovii A.Nelson & J.F.Macbr.

Perennial with lance-shaped leaves and violet-coloured flowers in summer.  To 30cm.  [RHSD].

Clarkia rubicunda (Lindl.) F.H. & M.E.Lewis

Half hardy, erect to prostrate annual with lance-shaped, sometimes toothed leaves, to 4cm long, and leafy spikes of rosy-pink to lavender flowers with a conspicuous red or red-purple base.  To 1.5m.  [RHSD].

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