14 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
Inflorescence mostly cymose, flattish on surface and roundish in 
outline : sometimes racemose or paniculate. Fig. i (5. lineare) 
shows a very characteristic and common type, formed of three dicho- 
FiG. I. — Inflorescence of S. lineare, from above. 
tomous branches with a flower in the primary and secondary forks, 
and a bract subtending each flower. 
Sepals regular in European and most Asiatic species, often markedly 
irregular in Chinese and Mexican plants. 
Petals very small and inconspicuous (some Rhodiolas), or relatively 
large and mostly brightly coloured, patent or seldom erect, entire 
or seldom fringed. 
Stamens normally lo ; 5 in a few species, most of which have no 
near relationship to each other. 
Carpels erect or stellate ; seeds borne in a row along the inner face 
of the carpel, very seldom (e.g. S. Celiae) in a bunch near the base of 
the carpel. 
Hybrids. 
Hybrids are rare in the genus. A notable exception occurs in 
the case of S. Telephium and its near ally 5. maximum, which cross 
freely in the wild state and in the garden. Otherwise only a very 
few hybrids are known. 
5. altissimum X reflexum = S. luteolum Chaboisseau (France). 
S. acre X sexangulare = S. FUreri K. Wein (Harz Mountains). 
S. annuum X sexangulare = S. erraticum Briigg. (Switzerland). 
S. annuum X alpestre = S. engadinense Briigg. (Switzerland). 
S. atratum X annuum = 5. Derbezii Petitmengin (Maritime Alps) . 
S. Aizoon X kamtschaticum. (Wisley, where it was received from a 
garden as S. kamtschaticum. Also seen at Cambridge.) 
5. Telephium X maximum. (Frequent in gardens where the two 
species are grown.) 
Owing no doubt to the fact that the genus is not a popular one 
among plant-fanciers, we have escaped so far from the production 
of endless uninteresting artificial hybrids, such as now confuse the 
allied genus Saxifraga. 
