BKRIDGEMENT OF THE FOREGOING 
APE 
„TULIPTHIEVES” AND „ONELEAVES”. 
All growers of Tulips have undoubtedly in some years seen, that 
occasionally one of their bulbs produces in stead of the usual leaves and 
flower only a single leaf which is much larger than the normal ones. 
Because this single leaf is not followed by other smaller leaves and 
the flower, it makes a very strange appearance. The growers designate it 
bij the term „„oneleaf” or „oneblade”’. 
This leaf acquires rather large dimensions and because no food is 
wanted for the flowering stage, it is clear that these „oneleaves” produce 
more bulbs than the normal tulips. 
If these bulbs are planted, again „oneleaves” must be expected, like 
before, or, if they run at lenght in flower, this flower will be of so poor 
a form and so narrow that the tulipgrower is very disappointed and 
designates these flowering plants as „Tulipthieves”. — 
The experienced grower who sees in his tulipbeds .„oneleaves”’, takes 
them therefore out as soon as possible and throws them away, because 
their horticultural value is very small. 
In the books on vegetable teratology of Masters and Penzig no mention 
is made and no indication is given of the reason for this peculiar 
development. 
In his study on „Wheat and Tulips” Count Solms-Laubach regards 
these thieves as bud-variations and he thinks it very probable that Tulipa 
acuminata and T. campsopetala are also Tulipthieves. 
In 1go7 the question was put in a meeting of a Netherland Horticul- 
tural-Society: How do „oneleaves” arise and what are they? The con- 
clusion was: it is a kind of atavism. 
One of the members however posed as his opinion, that the „„oneleaves” 
are a specific kind of tulips, introduced bij accident and spread throug- 
hout all the nurseries by negligence. If everywhere all the bulbs of this 
kind were annihilated, the oneleaves would disappear for ever. He regards 
these thieves as in every respect different from our garden-tulips. — 
It seems to me doubtful. — The bearing of one leaf is normal with 
all Tulips ull their-flowering-stage. Also is the poor, narrow flowerform 
