14 PHILIPPINE AGRICULTURAL REVIEW. 



rindborer, Prays citri, while the mandarin is practically immune 

 to this pest. 



An analysis made by the Bureau of Science in November, 

 1912, of alsem fruits purchased by the writer in Manila gave 

 the following results : 



Weight Of Grams. 



Fruit 56.5 



Peel ..'.I'.;".! 15 



Seed 1.5 



Pulp (rag) 13.5 



- . (\f* C 



Juice fW 



Analysis of juice. 



Per cent. 



Acidity (citric) 5.41 



Sucrose None. 



Sugar 2.41 



Protein 33 



Ash .39 



Analysis of pulp.' 



Per cent. 



Acidity (citric) 2.73 



Protein 1.03 



Ash 58 



The alsem was considered a variety of the mandarin in Bul- 

 letin No. 27, Plate IV, but a closer study of the plant and fruit 

 shows that it differs so greatly from all other Philippine species 

 of the genus as to be entitled to specific rank, and it has been 

 named in honor of Dr. H. J. Webber, director of the citrus 

 experiment station, Riverside, California, the association with 

 whom, in connection with his citrus and pineapple breeding 

 work, more than any other cause influenced the writer to take 

 up the improvement of tropical economic plants. 



The Bontoc local name "alsem" is here proposed as the ver- 

 nacular name for C. ivebberii. In previous publications by the 

 writer it was called the "mandarin lime," which is hardly suit- 

 able, however, since while it has certain resemblances to the 

 mandarin yet is distinct from it, and again, its only resemblance 

 to the lime lies in its acidity and ade-making qualities ; moreover 

 the name "mandarin lime" is too long for popular use. 



B. A. No. 853 (Bulacan), 2275 (Manila), 4292 (Bontoc). 



Citrus webberii var. montana. CABUGAO. 



A shrubby tree with slender branches and small, weak spines, some- 

 times absent; young growth green; leaves 8.5 to 14 centimeters long, 3 

 to 3.5 centimeters broad, ovate to ovate oblong, crenate, dark green above, 

 shining; base broadly acute to rounded; apex blunt pointed, usually retusc; 



