HOMOTYPOSIS IN THE VEGETABLE KINGDOM. 
365 
countries where it is indigenous, but Daewin (‘ Cross and Self-Fertilisation of 
Plants,’ 3rd edition, p. Ibb, et seq.) strongly believes it to be wholly self-fertilised in 
England. 
(v.) Latliyrus Odoratus. —A shorter series obtained from a second nursery garden 
at Lyme Regis. 
(vi.) Latliyrus Sylvestris. Everlasting pea from the sea coast not very far from 
Lyme Regis.-—Both the ripe and the aborted seeds were counted. The plant appears 
to be cross-fertilised. Professor F. O. Olivee tells me that he has watched bees 
effectively visiting the cultivated everlasting pea. 
(vii.) Vida Faba. Common Bean.—I took 100 plants, each having at least ten 
pods, from a field in Dauby Dale, in which a mixture of oats, the common pea, the 
common bean, and three or four vetches* (described by the owner as tares), was 
growing as food for cattle. The perfect beans only were counted, ljut the plants 
were a poor crop, many pods being stunted in their growth, and it was not always 
easy to determine whether the seeds had not been fertilised or there had been failure 
owing to want of nutrition. The common bean is both cross and self-fertilised. 
I have to thank Miss J. Shaepe and Miss E. Cyeiax for aid in the work on these 
beans. 
(viii.) Vida Hirsuta. —I found twenty-eight plants of the tare vetch growing on a 
strip of uncut grass along a cut cornfield at Botton, Danljy Dale. I could find no 
more plants in the neighbourhood. There was plenty of the common vetch ( Vida 
Sativa) on the same strip, hut the plants had rarely more than two to three pods on 
them. I was not able to get ten pods from each tare vetch, thirteen plants had fewer, 
and seven plants more. Tlie series l^eing short, the probable errors are high, but it 
seemed worth while to include the data. I endeavoured to count lioth ripe and 
aborted seeds, but here, as in one or two of the previous cases, I much doubt whether 
we have succeeded in counting all the ovules. In some of the green pods the number 
of ovules seemed to be considerably larger than in tlie fully ripe pods, and I think it 
possible that the non-fertilised seeds shrink till they are quite unnoticeable even by 
a cautious observer. Again, it is by no means certain here, as in other cases, that all 
the seeds reckoned as aborted are really non-fertilised. It is (juite possible that in 
some cases fertilised seeds have dwindled for want of nutriment till they appear 
aborted. 
Vida Hirsuta is either cross or self-fertilised (Daewin ; ‘ Cross and Self-Fertilisa¬ 
tion of Plants,’ p. 367). Whether this vetch, or indeed the common bean, were 
in our case wholly cross-fertilised or in part self-fertilised, I do not see that we have 
any means of settling. 
Table L. gives the frequency distributions of the various series. Now in these series 
we must bear in mind that we are only definitely certain of one thing, the number 
* Neither the pea nor the vetches offered enough pods per plant for an investigation of their homotyposis 
to be of value. 
