462 THE VEGETABLE WORLD. 
The LoGAn1ace”, separated from the former order, are either 
tropical or near the tropics, a few species belonging to Australia 
and America. There is no order more venomous than this, which 
now includes Nux vomica, a drug yielded by the seeds of 
Strychnos Nux vomica, an Indian tree, with small greenish-white 
flowers, ribbed leaves, and a beautiful round orange-coloured 
fruit, the size of a small apple, having a brittle stalk and white, 
gelatinous pulp. The pulp of the fruit, according to Roxburgh, 
is perfectly harmless, and is greedily devoured by birds, but the 
seeds are extremely dangerous. 
The other members of the group have few properties wraith 
mentioning; the OropraNcHACEs® are parasites upon the roots of 
other plants. The seeds, according to Vaucher, will be dormant 
until they come into contact with the roots of the Hemp, the 
plant on which it grows parasitically, when they immediately 
begin to germinate. 
The Grntianace® belong to the monopetalous exogens of De 
Candolle and Jussieu ; 
they are herbaceous 
plants, ribbed leaves, 
imbricated corolla, sta- 
mens and petals, alter- 
‘ Oe 4 
: ‘ bf 
\~ 4) Qe 4) Wie? Vie 
ovary, superior =N5 24; 
M/ 
07 
Fig. 424. 
a ke and left of the 
axis of growth. As an example 
of the order we shall limit our- 
selves to describing the Little 
— (Erythrea centaurium), 
Fig. 425 
It is a , little plant, common in 
woods, fields, and glades; its 
opposed leaves are entirely sessile, 
and disposed like thethyme. The 
flowers are regular and herma- 
phrodite; the calyx tubular, with 
five linear divisions. The co- 
rolla is in the shape of a funnel, co 
with very long tube and limbs, with five divisions. Five stamens es 
Fig. 425.—Erythrea Centaurea. 
