RIJKSHERBARIUM, NONNENSTEEG I, TELEFOON 254, DIRECTEUR: PROF. Dr H. J. LAM 
Verzoeke bij beantwoording bet 
nummer van dezen brief aan te halen. 
Aches: £AAN DEN DIRECTEUR 
VAN HET RIJKSHERBARIUM, 
LEIDEN (zonder vermelding van 
persoonsnamen). 
Please, refer to number of this letter. 
Address: THE DIRECTOR, RIJKS¬ 
HERBARIUM, LEIDEN, HOL¬ 
LAND (without mention of personal 
names). 
No. " 6 . 
BIJGEVOEGD (apart): 
ANNEX (separate cover): 
LEIDEN, . APX.11 .b.. t . 1.9.31*. 
AAN 
Dr . R . E .HOLT TULI 
Director of the Botanio Gardens 
INGAP 0 B 
ii 
b 
E. 
QNDERWERP: 
CONCERNS: 
ANTWOORD OP: 
REFERENCE: 
My dear' 
Dr .Holtturn, 
I have yet to answer the letters by Dr.GORnER of 
19th and March 3rd, Ho. 645 / 36 , concerning Macaranga, 
Dr.HSJDHRGOH of January 22nd, Ho. 4o/37 conoernihg jjTu 
oectively. Hill you please transmit the information* g 
to the gentlemen mentioned? 
December 
and by 
genia, res- 
Uverr~below 
■ . k 1 
Dr.CORNER. In ray opinion M.Hullettii, M.cornuta and M. triloba have to 
be combined/altogether. ®ur material of cornuta and triloba be¬ 
ing pretty rich, I was able to find that there is no feature con¬ 
stant in either of these species. In the 6 or 7 specimens which 
may be considered as more or less authentic (Reinwardt, Blunie, 
Korthals , Ju.nghuhn, Zollinger), the following features are very 
variable (no actual type specimen can be indicated and the one 
that is most likely ReinwardVs type, is sterile): 
f Periling 
leaves - shape greatly diVepse, in various specimens without any 
correlation with other features; hairiness underneath 
occasionally occurs, apparently especially in Borneo 
(M.divergent is probably only a hairy form of L. triloba) . 
male inflorescence - the peduncle long or short; ramifications 
lax or dense (age!). 
bracts of male inflorescences - most variable (rounded serrate- 
truncate Jt’re gularly dentate , etc. 
without correlation to other fea¬ 
tures) . 
female inflorescence - ramification lax or dense. 
of 
fruit - with or without horns (only one specimen); horns^variable 
length, shape and glandiness. 
Having examined authentic material of cornuta, triloba and 
divergens, 1 cannot help concluding that there is only one poly¬ 
morphous species: U. triloba (Rw.) j me11.-Arg. 
330 A • '37 
Fs/^7 
