2 / 57 - 
5 th January, 
Sir, 
I have the honour to ask for your assistance in 
identifying certain type-specimens in Thunberg's 
Herbarium, which I understand is at Uppsala. My 
problem concerns the correct botanical names for the 
malayan fruit-trees known as the Jack-fruit and the 
Chempeaak. 
The Jack-fruit is called Artoc arpus integrifolia 
(- Artocarpus Integ ra) and the type-specimen is a J&ya- 
collection oy Radermacher in Thunberg's Herbarium, 
On consulting the original description of A.intep ri folia 
Linn.f. (Suppl,Plant. 1 , p.^12), I find that it 
clearly describes the Chempedak and not the Jack-fruit. 
Therefore, it seems that botanists have called the 
Jack-fruit by a name which really belongs to the 
Chempedak, In order to make certain of this, I venture 
to ask you to undertake the following investigations 
1 . Will you please compare the specimens of the 
Chempedak and Jack-fruit, which I am sending you, with 
the type-specimen of A,inteM ri folia (« A.Integra , = 
Rademachia Integra ,° = Si t odium macrocarpon ), and tell 
me with which the type-specimen agrees 0 
The Chempedak is at once distinguished from the 
j " 
Jack-truit oy its hairiness. The Chempedak has stiff 
wiry hairs on the twigs, petioles, peduncles, buds 
(stipules) and on the veins on the underside of the leaf. 
Director, 
Uppsala Uriiversitets Botaniska institution 
