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Raukaua laetevirens (new)
An elegant Pseudopanax relative from the moist forests of Southern Chile. Small compound foliage consists of five slim leaflets and the green flowers in terminal clusters give rise to maroon-purple fruits. Makes a large shrub or even small tree to 6m if very happy. Hardy to at least -12c. I've seen these under Araucaria and Nothofagus dombeyi in Chile.
Rehderodendron indochinense NJM 09.119 (new)
Exceptionally rare in cultivation, the seed for these was gathered in N. Vietnam at 2100m. Differing from R. macrocarpum in the more persistent, more elegant foliage, dropping later in autumn, and also other points. Equally beautiful in flower and fruit, the bunches of white flowers with exserted stamens being seen in May.
A most desirable and rarely available Styrax relative from China. A small tree for neutral to acid soil bearing pendent clusters of softly fragrant, cup-shaped, slightly pink tinged white flowers with conspicuous exserted yellow anthers in May. Cocktail sausage sized, ribbed, bright red, dangling fruit hang from the branches in autumn. Foliage tinted in autumn.
Rehderodendron sp. (new)
From N. Burma at 2700m this is potentially a very interesting find. Like any Rehderodendron this will have white flowers and sausage shaped fruit.
A most unusual Buckthorn, very rarely seen, and certainly the most striking species, coming from the Caucasus where most plant types have their most outstanding, vigorous, healthy species. A hardy medium sized to large shrub with very bold foliage on stout shoots, the leaves sometimes up to 35cm long and 10cm wide, bronze-purple in autumn. Not for a dry site.
Rhaphithamnus spinosus (new)
From Chile and Argentina, this is grown primarily for the small tubular pale-blue flowers in April and especially the deep-blue round fruits in autumn. This would appear to be a myrtle from afar, but under close inspection one sees the small sharply toothed leaves are subtended by sharp spines. A medium to large evergreen shrub, best against a warm wall in colder areas.
Rhododendron cinnabarinum subsp. xanthocodon
A medium to large sized evergreen shrub from the Himalaya with relatively small blue-green leaves and clusters of waxy, yellow, funnel- to bell-shaped flowers in May and June. A fine species, especially in this form which is very resistant to powdery mildew. For acid soil with reasonable shelter.
Rhododendron johnstoneanum NJM 12.068
From the summit of Khayangphung, Manipur at 2800m asl, smack on the border with Burma. A large evergreen shrub of the Maddenia Subsect., the dark green foliage with a bristly margin and densely golden scaly beneath. Open faced sweetly scented white flowers blotched yellow in the throat emerge from primrose buds. Hardy in mild gardens.
One of the finest small trees for brilliant red autumn colour, receiving an Award of Merit for such. Leaflets toothed in juvenility, becoming entire in adulthood. Vigorous in youth and reaching about 10m at maturity. Good in most soils, acid or alkaline and perfectly hardy. Rarely flowers or fruits in the UK.
Ribes laurifolium 'Mrs Amy Doncaster'
A more compact and floriferous variety of this invaluable winter flowering evergreen small shrub. Leathery foliage is overlain with a multitude of pale green flower clusters in Feb-March. Excellent in sun or shade. Flower arrangers love it. Easy.
The Buffalo currant from N. America makes a very hardy and easy small to medium sized shrub with pendulous clusters of deliciously sweet, clove scented, golden-yellow flowers in spring. Foliage is deeply lobed and rich green, colouring well in autumn.
Rosa aff. kokanica ex Kyrgyzstan (new)
Found near Arkyt, Kyrgyzstan, in an area that regularly sees -30c, and sometimes less, this should be hardy with you. A fairly small growing species to about 1.5m high, with attractive diminutive blue-grey-green foliage. Flowers are either yellow or white and are of course single. Hips are long necked and mature red-black. For a warm sunny well drained position.
Rosa sericea subsp. omeiensis PAB 2883
Recently collected in Bhutan by Paul Barney, this form of a variable species has over eleven leaflets to each ferny-looking leaf and bizarre looking fruit, having the stalk enlarged and fleshy like the fruit, forming an elongated hip in red and yellow, seen in summer. Flowers are white with usually four petals. Makes a tough, medium sized, dense shrub with prickly stems.
Rostrinucula dependens NJM 11.072
My collection of this lightly suckering shrub from Guizhou, SW China. Newish to Western cultivation, it bears masses of long, pendulous inflorescences of lilac-pink flowers from whitish buds in late summer. The slim green foliage is less hairy on the underside in this form. Easy in sun and well drained soil, this reaches about 2.5m high. Hardy to below -10c.
Rubus arcticus (new)
The Arctic Raspberry forms a very low growing creeping species to about 30cm tall, with vivid red-pink flowers in early summer followed by very tasty deep-red fruits that are remarkably unaffected by frost. Usually found in acid soils in nature, but probably more tolerant than that.
Rubus calophyllus PAB 13.171 (new)
One of the finest of all Rubus, making a medium-sized evergreen arching shrub. The large deep-green glossy leaves are silvery beneath with very many closely spaced parallel veins, and could be likened to an imaginary single leaflet R. lineatus. Claret-red flowers in summer. Best with some shelter, from freezing easterly winds.
Rubus ichangensis Silver form (new)
A Chinese species grown for its striking silvered new foliage. The evergreen leaves are shaped like a long arrow head and emerge in spring a glistening silver, turning to pewtered green as the season progresses. This forms an efficient ground cover or pops up between things. Height to 50cm unsupported. Hardy with me in my VERY cold garden.
Rubus irenaeus (new)
A rather bold looking Chinese species, used wisely as a ground cover in shady areas. The broad rounded evergreen foliage with a subtle metallic lustre is beige felted beneath and sometimes over 15cm across on slender pale grey downy stems. White flowers followed by large edible red fruit. Hardy. Height generally about 50cm but can be taller if supported.
One of the finest of foliage plants, up there with Neolitsea and Schefflera etc, with extremely attractive leaves in the style of a Schefflera, but with the 5 leaflets conspicuously and densely parallel veined, green above and silvery, shining, silky beneath. A virtually spineless, multistemmed semi-evergreen shrub to 2m, for a sheltered corner.
Rubus lineatus from Burma (new)
One of the finest of foliage plants, up there with Neolitsea, Schefflera etc, with extremely attractive leaves in the style of a Schefflera, but with the 5 leaflets conspicuously and densely parallel veined, green above and silvery, shining, silky beneath. A virtually spineless, multistemmed semi-evergreen shrub to 2m, for a sheltered corner.
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