252 THE DISPERSION OF BRITISH PLANTS. 
are always white; and on the other hand amore extended range than 
those with flowers sitey coloured. The average compare as fol- 
lows :— 
Species. Average. 
316 Of whole orders having pa gel 
wers ; 771 
64 Other plants with i inconspicuous flowers . 7°19 
~ 380 P aamtt with bites shied coloured 
flow ies : 
7°62 
“179 With flowers always white . etizait Mies 
176 With flowers variable in colour +e) Oe 
355 With flowers always coloured 6°05 
Averages taken out separately for yellow, red or a jas blue or Vie 
and parti-coloured flowers, do not differ much from each other, 
from the average of coloured flowers. taken all together. 
Dispersion according to the heeets of the Frutt. 
Fleshy Fruits—Amongst our Bri species, the average of 
fleshy-fruited | is very little tire gr of dry-fruited, They 
compare as follow 
Specie Auee 
71 With shear tru. : ; . 
1019 With dry fr : ; é 33 
If we exclude from among abet fruit poe eontaining se 
seeds, not likely to be swallowed by birds, their average is somew. 
raised. 
oe Our lists give the following results :— 
Spe Average 
B84 With indehiscent fruit . . ; ; 6:93 
434 With dehiscent fruit 6.76 
showing less difference than mi Sih be dinpich ted. “This may arise 
from the fact that dehiscent fruits have generally more mwmerous 
an advantage that may compensate in great measure for the disad- - 
vantage of the seeds being exposed n : 
Special adaptation for Dispersion.—The fruits and seeds of eee 
plants are to all appearance specially adapted for dispersion, 
ce. a 
pencil of hairs attached to the seeds ; (2) of a feathery pappus or ge 
or (3) of hooked bristles or tubercles, bent or spir » aE 
— grappling ee borne des the Jruit itself. Our native species 
us farnishéd compare as follow: 
ipecies. 
32 With seeds having a coma 
94 With fruit furnished with pappus, 
84 With fruit furnished with fel organs 
930 Not specially adapted 
¢ 
f 
4 
