CITRUS FRUITS IN THE PHILIPPINES. 27 



times retuse; petiole 16 to 30 millimeters long, with wings ordinarily 

 narrow, in large leaves sometimes 15 millimeters wide; flowers not seen; 

 fruit 6.4 centimeters long, 8 centimeters in equatorial diameter, weighing 

 317 grams, oblate; base rounded; apex flattened to depressed, wrinkled, 

 with a circular depression around the raised stigmatic area; surface 

 otherwise fairly smooth, lemon yellow; skin thin, central cavity large; 

 pulp contained in about 13 locules, light colored, quite juicy, sharply 

 acid, and of good flavor; juice cells long and slender. 



Ripe fruit of this species has been received from Davao, 

 Mindanao, in December and January. The fruit is perhaps too 

 large for retail trade, but might possibly be utilized in the 

 manufacture of lime juice and allied products. 



Full-grown plants of C. excelsa or the variety above described 

 have not been seen, but C. e. davaoensis appears to be smaller 

 than C. excelsa in all respects, the fruits excepted. There has 

 been no opportunity for an examination of the flowers but so far 

 as observed the plant appears more closely related to C. excelsa 

 than any other species herein described. 



B. A. No. 1009 (Davao, Mindanao). 



ECONOMIC VALUE OF THE NEW OR LITTLE KNOWN SPECIES. 



The horticulturist and plantbreeder, ever on the alert for 

 new plant material that may enhance his profits, extend the 

 cultivable area of his crop, or be used in making new cross 

 combinations, will naturally ask himself of what value are these 

 new plants and fruits. Briefly stated, it may be said that the 

 "Tizon" is a dessert or breakfast fruit of high, if not perhaps 

 the highest, order, its main defect being the unsightly basal 

 projection. Then, as stated elsewhere, the best "limon real" is 

 unsurpassed in quality for "ade" making. Perhaps third in 

 importance are the better types of the alsem for the manufac- 

 ture of citric acid, etc., and it might find a sale in competition 

 with the lemon and lime, depending to a great extent upon 

 its keeping qualities. The juicy, thin-skinned, and few-seeded 

 talamisan may find lovers as a breakfast fruit and is also of 

 the right size for an ade fruit. If cultivation would increase 

 the juiceness of the panuban, this fruit may find favor with 

 many. A good marmalade may be made of the calamondin. 

 The above species or varieties have more or less of a future 

 on account of their pomological merits, and the plant breeder, 

 by crossing them and the cabuyao and canci with old cultivated 

 species, might obtain valuable results. 



There is also the prospective value of the new species as 

 stocks. To determine the congeniality of these species and the 



