Article from Bean's Trees and Shrubs Hardy in the British Isles
Recommended citation
'Cistus × revolii' from the website Trees and Shrubs Online (treesandshrubsonline.
Treated by Bean as ×Halimiocistus revolii.
A dwarf densely branched shrub 1 to 2 ft high; stems densely covered with white, spreading hairs. Leaves elliptic to broadly so, obtuse to rounded at the apex, cuneate at the base, 1⁄4 to 3⁄4 in. long, 1⁄8 to 1⁄4 in. wide, the lower ones green above and short-stalked, the upper ones sessile, grey-hairy above, all leaves hairy beneath; venation pinnate, prominent beneath. Flowers in terminal cymes. Sepals mostly five, silky-hairy on the outside. Petals white, yellow at the base (or pale yellow with a deeper yellow base). Ovary glabrous; stigma sessile.
A natural hybrid between Cistus lasianthus subsp. alyssoides [but see above] and C. salviifolius, described from a plant found in 1914 in the Cevennes, France, on the borders between the departments of Ardèche and Gard; introduced by Sir Oscar Warburg and his son E. F. Warburg and first shown by the former from his garden at Epsom in 1936. It is a pretty, moderately hardy shrub, flowering June and July. The flowers remain open until late afternoon.
Synonyms
×Halimiocistus wintonensis O.E.Warb. & E.F.Warb.
Treated by Bean as ×Halimiocistus wintonensis.
This is a hybrid of garden origin raised in Messrs Hillier’s nursery at Winchester and it originated from Halimium lasianthum or ocymoides crossed with Cistus salviifolius. It is an evergreen shrub of bushy, rather spreading habit and 11⁄2 to 2 ft high. The young shoots are covered with a soft white wool as are also the leaves, both becoming a dull green later. Leaves elliptic-lanceolate, pointed, tapered at the base rather prominently three-nerved, 3⁄4 to 2 in. long, scarcely stalked. Flowers 2 in. wide, the five petals white, broadly wedge-shaped, each having a crimson-maroon blotch towards the base, which gives the flower a striking zone of colour, the actual base being marked with a bright yellow, triangular patch. These successive zones of white, crimson, and yellow give the blossom a beauty as unusual as it is conspicuous. It is admirable for a sunny, rather dry spot in the rock garden or elsewhere, but has not a very strong constitution. The flowers often keep open well on in the afternoon. It is scarcely hardy enough to withstand a severe winter except in the milder counties, but survives our ordinary winters near London. It flowers in May and June.
A sport with cream-coloured flowers was found on this hybrid at the Merrist Wood Agricultural College in 1978 (The Garden (Journ. R.H.S.), Vol. 107, pp. 416–17 (1982)).