460 THE VEGETABLE WORLD. 
_of them yield excellent dyes, others are grateful condiments. 
Among the Styracacee, which are, with some few exceptions, 
natives of the tropics, we find many useful properties. Storax 
and benzoin, the produce of Styrax officinalis and S. benzoin, are 
astringent and aromatic: the former, a native of Syria, but now 
found in the Levant, Italy, and Spain ; the latter is found in the 
islands of the Indian Archipelago. 
GENTIANS. 
Perigynous exogens, with monopetalous flowers, having a 
minute embryo and much albumen, which separates them from 
Solanals, and parietal placentw, which distinguishes them from 
Cortusals. 
Trees or shrubs, with alternate non-stipulate leaves; axillary inflo- ; exe. 
rescence ; flowers hermaphrodite ; stigma simple, radiating. i CCXXIX. Ebenac 
Evergi t shrubs, branches often angular, leaves alternate as 
of opposite ; non-stipulate flowers, small, green or white; stigma at CCXXX., Aquifoliacez. 
the end of a style, 
Trees or shrubs. with non-stinuiate 1}. + 
i i re : id . . 
stigma collected into a massive head. } CCXXXI. Apocynacez. 
Herbaceous plants, shrubs, or trees, with opposite entire leaves XXXII. Loganiacer. 
usually with stipules intervening ; flowers racemose or solitary. : f Rae se 
Under-shrubs, i 
at the end of a 
» With densel bri 1 ipul 1 ; stigma 
style ; flowers solitary and terminal; petals five, un- 
CCXXXIII. Diapensiacex. 
stamens five, equal and interpetalous. 
e at the base ; flowers in dense spikes; calyx tubular and cam- 
ulate; corolla i 
segments, 
XXXIV, Stilbacez. 
monopetalous; stamens equal in number to the oc 
erbaceous leafless parasitical plants, non-stipulate; flowers didy- 
namous: calyx inferior; persi 
sti 
stent corolla; monopetalous stamens; 
four anthers ; one-celled i 
Shrubs, with entire, narrow, rigid, non-stipulate leaves, in whorls, 
articulat 
pan 
simple, at the top of a style. } 
CCXXXV. Orobranchacee. 
ceous plants, rarely shrubs, sometimes twining ; leaves oppo- 
i x 
site, non-stipulate, sessile; flowers regular, terminal, or axillary : XXXVI. Gentianacee. 
calyx inferior, persistent ; corolla monopetalous ; stigma at the oc me 
summit of a style. 
The Gentian group range over the entire globe. They bloom 
on the verge of eternal snow in the Alps, in the chinks of the 
rocky steeps of North Cape, in the Himalayas, on Mexican 
mountains, and in the hottest sandy plains of India and South 
America. As ornamental plants, they are remarkable for the 
brilliant colours and beautiful form of their flowers, whose pre- 
vailing colours are either an intense blue or a clear bright y ellow. 
The Esenacex are Indian and tropical, although a few specie 
are found as far north as Switzerland in the Old World, and New 
