Helianthemum.~\ vm. cistacEjE. 
45 
terminal lobe of its leaves more similar to the rest (less dilated than 
that of R. Jruticulosa ) : — a specimen from Mr. Boner has the cuhjx 
5- partite. 
Ord. VIII. CISTACE2E Juss. 
Sepals 3, with a twisted [estivation, with usually 2 outer 
smaller ones. Petals 5, deciduous, with a twisted and crumpled 
aestivation. Stamens numerous. Ovary 1, 1-or many-ceiled. 
Style 1. Stigma capitate, simple. Capsule of 3 — 5, rarely 10 
valves. Seeds numerous. Embryo spiral or curved, in a mealy 
albumen. — Shrubs or herbaceous plants abounding in Southern 
Europe and Northern Africa, with handsome , generally fuga- 
cious, flowers. — Cistus Creticus affords the balsam called Gum 
Ladanum. The stamens of Helianthemum expand after being 
suddenly compressed between the finger and thumb. 
1. Heliantoemum Toum. Rock-rose. 
Sep. 5, of which 3 are equal and 2 outer ones smaller. Caps. 
3-valved. — Named from i/Aiot , the sun, and avOoe, a flower ; the 
same as Helianthus. 
1. H. cdnum Dun. ( hoary dwarf Ilf ; shrubby, leaves 
without stipules opposite ovate or oblong petiolate fiat hoary 
beneath, racemes terminal bracteate, style twisted at the base 
reflexed, at the apex indexed, seeds blackish. Cistus L. C. 
marifolius, E. B. t. 396. 
Rare ; alpine rocks in the north of England, Lancashire, Westmore- 
land, on Cronkley Fell in Yorkshire, and in Wales. Western Isles 
of Arran, Ireland. 11. 5,7. — A low shrubby plant, with hoary 
leaves, and rather small yellow flowers. Cistus marifolius, Anglicus, 
(Elaudicus, and Italicus of Linnaeus appear all to be mere vars. 
2. II. guttatum Miller ( spotted annual R.) ; annual erect, leaves 
oblongo-lanceolate or linear, the lower opposite without stipules, 
the upper alternate, style straight very short. — a. racemes 
without bracteas. Cistus L. : E. B. t. 544. — d- racemes brac- 
teate. H. Breweri Planch, in Lond. Journ. Bot. iii. p. 618. 
t. 21. 
Very rare. — ct. Three- Castle Head, Cork. Jersey. — /8- Holyhead 
mountain, and near Amlwch, Anglesea. 0. 6 — 8. 
3. II. * ledifblium Willd. ( Ledum-leaved R.) ; herbaceous 
slightly downy, leaves with stipules lanceolate, flower-stalks 
solitary opposite to the leaves shorter than the calyx erect 
in fruit, styles straight, capsule polished. Cistus L.: E. B. t 
2414. 
Very rare ; on Brean downs, Somersetshire ; Huds. 0. 6,7. — 
We have never seen British specimens of this piant, and it is gene- 
rally supposed that Hudson mistook II. polifolium for it. 
