LEGUMINOS4-PAPILIONACE Zi. 219 
edges is inserted the calyx. This is gamosepalous, with five divisions 
of unequal size and depth. The three anterior are of nearly equal 
length, approximated to form a 
sort of lip, which is slightly 
notched at the apex in the very 
young bud. The two superior 
or posterior are separated behind 
by a cleft, so deep, that in cer- 
tain species it extends to close 
upon the edge of the receptacle. 
The irregular papilionaceous 
corolla has an oval standard, ob- 
long wings, and a straight or 
incurved oblong keel, whose 
pieces are united for a variable 
distance along the lower edge. 
The angles of these petals are 
often adnate for a short distance 
to the staminal filaments. They 
are monadelphous, united for a 
good distance into a closed tube 
and only free near the apex. 
The introrse two-celled anthers 
dehisce longitudinally. The five 
superposed to the petals are the 
shorter and versatile, while the 
alternating five are more elon- 
gated and basifixed. The sessile 
ovary is surmounted by an incurved style, inflexed or circinate 
above, and ending in a globular, or more rarely oblique oblong, 
stigmatiferous head. The ovules, two or three, or more frequently 
indefinite in number, form two vertical rows on the posterior wall 
of the ovary and are campylotropous and descending, with the 
micropyle looking upwards and outwards. The fruit is an oblong 
linear or subglobular, indehiscent or bivalve pod; the valves 
are convex or turgid, rarely almost flat, and enclose a variable 
number of exarillate seeds. The genus Broom or Genista comprises 
shrubs or undershrubs from the temperate regions of Europe, 
western Asia, and north Africa; some seventy species are 
Genista tinctoria (Dyer’s Greenweed). 
Fre. 191. 
Habit (4). 
