The Philippine Journal of Science, C. Botany. 
Vol. VI, No. 4, September, 1911. 
PHILIPPINE URTICACEAE, 11. 
By C. B. KoBixsoN. 
(From the Botanical Section of the Biological hahoratory, Bureau of Science, 
Manila, P. I.) 
. Somewhat intensive botanical explorations have recently been made in 
Benguet, and among the collections are representatives of several species 
not previously obtained. This has also furnished an opportunity to make 
detailed investigations upon various points, where abundance of herbarium 
material furnislies controls, so that the results obtained can be checked 
by many workers. Somewhat unexpectedly, although it should not have 
been, one collection has rendered necessarv^ a complete revision of the 
statements which have been made in many works regarding the genus 
Pipturm. Less numerous collections have been received from other parts 
of the Islands. Nothing is heroin cited unless some light has been thrown 
upon the species concerned. The numbers placed with the species indicate 
tlieir sequence in comparison with those enumerated in my previous paper. 
n. ELATOSTEMA Forst. p. p. 
In this genus the need for characters that can be depended on as 
constant is very great. For this reason, a test has been ">" J » th 
reliability of tetramerous as contrasted with pentanicrous s^m na 
flowers. Practically no attention has been paid to tins m tl- Pa.t o.t 
workers recording the facts as a matter of routine m f^^^l^^^'S -^VO^l''' 
but no one basing conclusions upon them. This is used m P^u^^utj^ 
Gono.tegia (McLial^s) as one of the main bases of -F-'*> ' " ;' 
far as niilippine experience goes, it is less constant '»^1>-' ff -" ,; ^^ 
in EIato.Jma. Much of the material examined was hardened ,n .dcohol 
'Hook. f. Fl. Br. Ind. 5 (1888) o80. 
»See This Joun.al 6 (1011) Bot. 8. 10, 
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