BOTANISKA INSTITUTIONEN 
UPPSALA 
Uppsala, April 3> 1937* 
E. T. H. Comer Esq., 
Assistant Director of Gardens, 
Singapore. 
Dear Sir, 
I have received your letter of Jan. 13th regarding 
some Artocarpus-species. However I could not answer it until the material of the 
species of the Artocarpus-species also arrived. We received it the other week 
and now I will tiy to answer your questions as far as possible. I have compared 
your species with what we have here and I will now give you my report on the 
matter: 
The type-specimen of Artocarpus integrifolia L* fil., described by the 
younger Linnaeus (filius) 178!^ probably does not exist if it is not the specimen 
in herb. Thunberg. If it belonged to the Linnaean herbarium it ought to be in 
the Linnaean Herbarium in London. Dr B. D. Jackson however in his Index to 
the Linnaean Herbarium (London 1912) mentions only one species of Artocarpus vis. 
A. lobatus L.f. (1087) but no Rademachia and no Sitodiii^^^send you a copy of 
Linn6 f~ description (Brunsvigae 178l]j^and from this description it is clear 
that your suppo sition that the describe d plant mus t be the Chempedak is quite 
right^ flJote that Linnaeus fil. here only mentions Java and Amboina as homeT^ 
C. P. Thunberg published his new genus and species Rademachia (no rl) integra 
in the "Acta' of the Swedish Academy of Science 1778 p. 254* The manuscript is 
dated Batavia 15/8 1775- I send you also a copy of this paper .j The description 
of this species from Java corresponds exactly with your Chempedak. Thus Thunberg's 
Ra demachia integ ra is really the Chempedaki No doubt about thati 
In the year 1779 Thunberg altered his name Rademachia to Sitodium macrocarpon 
because the name Rademachia was already used for another plant. .Cfr Phil. Trans. 
Roy. Soc. London Vol. 69 . 1779 Part. Up. 482 . I send you an extract of this 
DOC, 
■•P 
paper. f Here the old original name Rademachia is spelt Rademachia. The description 
of Sitodium macrocarpon also corresponds with the Chempedak. But in his 
% 
publication of 1780 he also declares that Sitodi um macroc arpon occurs in Ceylon. 
"Haec species in Ceilona vulgatissima est et spontanea . . . ." 
In the year (Linn6 fil. established the genus Artocarpus for this plant .without 
to quote Forster's Characteres generum plantarum ( 1778 ) where this genus (but no 
species) already was described under the name Artocarpus. Sitodium was a name 
used before for another plant. Bentham & Hooker also say in Gen. Plant. Ill 
p. 378: "Genus ab auctoribus Linnaeo tribuitur, numquam tarnen a Linnaeo patre 
editum fuit, sed a Linnaeo filio in Supplemento suo post Forsterum sub. n. 1246 
receptum," 
Thus Rademachia integra Thunb. and Sit odium macrocarpon Thunb. are one and the 
same plant. A special type-specimen for Sitodium macrocarpon does not exist in 
herb • Thunb erg l 
Wq 
