10 ENGLISH BOTANY. 



long as the inner sepals, with the valves ciliated at the edge. 

 Stems grey with stellate puhescence. 



I am indebted to Mr. J. G. Baker for pointing out to me that the 

 Teesdale plant is H. vineale, Pers. It has the leaves nearly wholly 

 green on the upper surface, while in the ordinary form they are 

 more or less grey. The Galway plant is veiy much more luxuriant 

 than any sjiecimens I have seen, with the petals fully twice as long 

 as the sepals, which have numerous spreading white hairs ; the 

 leaves ai'e broad and nearly destitute of felted stellate pubescence 

 above. The European H. Oelandicum, AYahln., H. Italicum, Pers., 

 and H. canum, appear to be only sub-species at the utmost. 



Hoary Rock-Rose. 



French, Heliantkeme Blanchdtre. 



Sub-Genus III.— EU-HELIANTHEMUM. Dunal. 



Petals much longer than the sepals. Stamens numerous, all 

 fertile. Style elongate, bent upAvards. Euniculus thickened 

 upwards. Embryo bent, with the cotyledons straight, parallel to 

 the radicle. 



SPECIES III— HELIANTHEMUM VULGARE. Gcertn. 



Plate CLXVIII. 



Reich. Ic. Fl. Germ, et Helv. Vol. III. Cist. Tab. XXX. Fig. 4547. 

 Cistus Helianthemum, Linn. Sm. Eng. Bot. No. 1321. 

 Cistus tomentosus, Scop. Sm. Eng. Bot. No. 2208. 



Puoot perennial. Stems shrubby, procumbent, much branched. 

 Leaves opposite, shortly stalked, oval, elliptical, oblong, or strap- 

 shaped, nearly flat, generally clothed with a felt of white stellate 

 pubescence underneath and more or less numerous scattered white 

 hairs on the upper surface and margins and on the midrib beneath. 

 Stipules lanceolate-linear, ciliated. Inner sepals nearly three times 

 as long as the two outer ones, obtuse, apiculate, nearly destitute of 

 stellate pubescence, with distinct ribs clothed with woolly hairs, 

 but no black dots. Petals much longer than the sepals, yellow 

 concoloi'ous. 



On hilly pastures and rocks, preferring calcareous soils and such 

 as are formed by the debris of trap rocks. Common, extending as 

 far north as Ross-shire and Lanarkshire in Scotland, where it is 

 most common on the eastern side. 



England, Scotland, Ireland. Shrub. Summer and Autumn. 



Hootstock thickened and woody, giving off much branched 

 woody stems terminating in ascending herbaceous flowering shoots 



