YlNG TS1ANG 
BOTANICAL INSTITUTE, SUN YATSEN UNIVERSITY 
314. Ma Tali Wei Road. Kowloon. Hongkong 
TEL. 53344; CABLE Be TELEGRAPHIC ADDRESS "BOTINST" 
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Dr. M. H. Henderson, 
Curator of the Herbarium, 
Botanic Gardens, Singapore 
October 21, 1940 
Dear Dr* Henderson: 
Many thanks for your letter of September 28 and 
the apocynaceous plant. You are quite right that it belongs to 
Parsonsia . it is very closely related to P. lata Mgf* ( Lyonsia 
mollis Yarb.) formerly known only from New Guinea. From the latter, 
the present plant differs only in minor characters; viz., the 
relatively longer corolla-tube with shorter lobes; anthers not 
exserted from the corolla-throat; leaves broader at the base and 
more pubescent; etc. Enclosed herewith are two analytical dravangs 
which you may keep for reference, one of Nur 32598 and one of Brass 
1218, det. Markgr. ex num. Jour. Am. Arb. 10; 262. 1929. ,/e shall 
deem it a favor if we may retain the specimen you sent. 
If it is possible, will you kindly spare me a 
specimen of llicrechites tenuifolia Ridl. The Chinese collections 
currently interpreted as M. poly ant ha Lliq. may possibly represent 
Ridley’s species• 
Yours sincerely, 
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