PETROMA'RULA PINNA'TA. 
WING-LEAVED EOCK-HEEB. 
Class. Order. 
PENTANDIUA. MONOGYNIA. 
Natural Order. 
CAMPANULACE^. 
Native of 
Height. 
Flowers in 
Duration. 
Introduced 
Candia. 
3 feet. 
August. 
Perennial. 
in 1830. 
No. 1038. 
The name of the present genus is compounded 
from the Greek petea, a rock; and maeon, a bitter 
herb. The reason why such a name w’as first 
adopted is sufficiently evident, and it may be pre- 
sumed that for the plant under consideration it is 
also appropriate, since Don says it is frequent on 
the rocky shores and mountainous parts of Candia, 
and also on Mount Balbo in Italy. 
Notwithstanding English botanists have taken 
this plant from amongst the Phytheumas and 
adopted the new genus for it, as established by 
Persoon and Alphonse Decandolle, it has not been 
without much doubt as to its propriety. 
This plant becomes highly ornamental in the 
borders, when in luxuriant growth, from its abun- 
dance of flowering stems, each one amply clothed 
with azure flowers. It was known to Parkinson, 
and in 1640 was published at page 649 of his 
Theatre of Plants. 
It would be unsafe to leave the whole stock of 
this plant exposed to a severe winter, it being 
somewhat impatient of moisture. One or two 
should be potted, to receive winter protection. 
