A pure atmosphere is essential to its existence, as I experienced at
Lambeth-Marsh, where I in vain endeavoured to cultivate it.

It is propagated by cuttings as easily as any Geranium, and requires a
similar treatment; in hot weather it must be well supplied with water,
and in winter carefully guarded against frost, so fatal to most of the
natives of Peru.




[142]

SCORZONERA TINGITANA. TANGIER SCORZONERA, or POPPY-LEAV'D
VIPERS GRASS.

_Class and Order._

SYNGENESIA POLYGAMIA ÆQUALIS.

_Generic Character._

_Receptaculum_ nudum. _Pappus_ plumosus. _Calyx_ imbricatus, squamis
margine scariosis.

_Specific Character and Synonyms._

SCORZONERA _tingitana_ foliis omnibus runcinatis amplexicaulibus. _Linn.
Syst. Veg. ed. 14._ _Murr. p. 711._