Reseda. | VII. RESEDACE. 51 
an introduced plant with us, as in northern Europe generally. Fi. 
summer, - | 
2. R. lutea, Linn. (fig. 115). Cut-leaved M.—Not so tall as R&. luteola, 
much more branched, and less erect. Leaves very variable, but always 
deeply divided, most of them once or twice trifid, but occasionally 
pinnatifid, with few oblong or linear segments, much waved on the 
margins. Flowers on slender pedicels, in long racemes. Sepals usually 
6, but sometimes only 5. Petals as many, of a greenish yellow, the 
lowest entire or 2-cleft, the others irregularly divided into 2, 3, or 4. 
Capsule oblong, with 3, rarely 4, very short teeth. 
In waste places, especially in limestone districts, in central and 
southern Europe, to the Caucasus. In Britain, in south-eastern England, 
on the limestones of the western and northern counties of Ireland, and 
on the east of Scotland to Aberdeen. /l. summer. 
3. R. alba, Linn. (fig. 116). White M.—A tall perennial, the lower 
leaves crowded on the stock or base of the stem, and all deeply pinnate, 
with numerous (9 to 21) linear or lanceolate segments, entire, but waved 
on the margins. Flowers on short pedicels, much whiter than in the 
last two species. Sepals 5 or 6. Petals as many, all equal, and 3-cleft. 
Capsule ovoid, with 4, or sometimes 3, 5, or 6 teeth. AR. fruticulosa, 
Linn. 
A Mediterranean species, long since introduced into gardens, and 
occurs as an outcast on the south coasts of England and Ireland. Fi. 
summer. 
ee ee 
VIII. CISTACEA. THE CISTUS FAMILY. 
Shrubs or herbs, with opposite, or, in a few exotic species, 
alternate leaves, with or without stipules; the flowers in ter- 
minal racemes. Sepals 3, nearly equal, overlapping each 
other in the bud, with or without 2 smaller outer ones. Petals 
5, or rarely fewer, broadly spreading. Stamens numerous, 
hypogynous, and free. Ovary and style single. Capsule 
l-celled, or incompletely divided into several cells, opening in 
3, 5, or 10 valves, which bear along their centre as many 
placentas or imperfect partitions. Seeds several, the embryo 
curved, imbedded in albumen. 
A small Order, spread chiefly over southern and western Europe and 
northern Africa, with a few American species. It corresponds with 
the old Linnean genus Cistws, which is now limited to the large-flowered 
species with 5 valves to the capsule. They are none of them British, 
but include the well-known Gum-Cistuses of our gardens. 
I. HELIANTHEMUM. ROCKROSE. ° 
Low or diffuse undershrubs or herbs, with the flowers smaller than 
in the true Cistuses, and the capsule opening in 3 valves only. The 
leaves in the British species are all opposite, and the 2 outer sepals 
very seldom wanting. 
