GERANIALIS. 431 
_ the base to the summit. Under its integuments the seed encloses 
an embryo without albumen, the flexous cotyledons of which are 
fitted into one another. Herb Robert (Geranium Robertianum) 
(Fig. 412) is frequently met with in hedgerows, shaded places, 
and on old walls. It flourishes in the months of April to 
August, and exhales a strong odour. This plant, which is some- 
times used in medicine, is an annual, with a diffused branching, 
ascending, or straight stem, often of a reddish colour. It is 
coated with long, shaggy, patulous hairs, glandulous towards the 
summit. The leaves are 
divided into three to five Vv 2 
petiolated segments. The , cS 
' peduncles are longer than ) y 
the leaves. The petals are 
purple in colour, veined with 
WH | ZZ 
white. Wiz 
. 2 easel 
The Erodium, or Stork’s- a 
bill, one species of which, TF 
the Hemlock Stork’s-bill (Z. 
cicatarium) (Fig. 413), with 
pinnate leaves, is very com- 
mon in all sandy places ; has 
@ corolla and calyx like the 
Geranium. But of the ten 
_ Stamens five only are fruit- 
ful. Those which are sterile, 
that is to say destitute of 
anthers, are small, with flat- 
tened filaments, ‘and are Fig. 413.—Storks-bill Geranium. 
°pposed to the petals in the exterior whorl. The fruit differs 
also in some particulars from that of the Geranium. 
|... The Pelargoniums are particularly remarkable from the irregu- 
et larity of their flowers. In the calyx the posterior sepal is pro- 
longated at its base by a spur, which is a straight, hollow, 
hectarous horn or gland adhering to the peduncle. The corolls 
Senerally bears unequal petals. The upper two are often largest, 
the other three differ from each other. As to the andraceum, 
whilst in the Erodium the exterior verticle is completely abortive, 
