12 PHILIPPINE AGRICULTURAL REVIEW. 



anthers large, abundantly supplied with pollen, proterandrous ; pistil stout; 

 stigma when ripe covered with a sticky, milky fluid; ovary 11 to 14 loculed; 

 fruit large, oblate, globose or pyriform, light lemon or orange colored; 

 flesh grayish or pink; juice sacs large, spindle shaped; flavor a mingling 

 of acid, bitterness and sweetness or subacid; seeds large, light colored, 

 wedge shaped or irregular, with prominent ridges surrounding broad, 

 flat areas. Native to the Polynesian and Malayan Archipelagos. 



The pomelo is the most widely distributed species in the genus, 

 but here as in the orange the quality of practically all the fruit 

 is wretchedly poor, dry and insipid with a very thick skin. 

 With the exception of the panuban, described below, there are 

 no variations worthy of notice in this genus. 



Citrus decumana L. POMELO, var. PANUBAN. 



A spiny tree, 3 to 4 meters tall of robust growth; young growth pubes- 

 cent; leaves 12 to 17 centimeters long, 4.7 to 8 centimeters wide, oblong 

 ovate, crenate, coriaceous; base rounded; petiole 15 to 23 millimeters long, 

 wing margins narrow, at most 18 millimeters broad, and cuneiform; 

 flowers not seen; fruit 5.7 centimeters long, 7 centimeters in transverse 

 diameter, oblate, with shallow apical cavity; surface smooth, lemon yellow; 

 skin very thin; pulp contained in 11 to 12 locules, yellowish, fairly juicy, 

 subacid, acidity and sweetness well blended, aromatic and well flavored; 

 seeds large, polyembryonic. 



The panuban is said to bloom about New Year and the fruit 

 ripens in September to November; the trees are reported to be 

 very prolific. The panuban has been reported only from Lias, 

 Bontoc, where half a dozen trees are said to grow. Possibly the 

 panuban may be an accidental hybrid between the pomelo and 

 the orange or mandarin ; if it is simply a mutation it is certainly 

 one of the most striking in this species. However this may 

 be, the pomelo character is strongly dominant in both the foliage 

 and the fruit. Very well flavored, the fruit is too dry to be 

 acceptable to a discriminating public, but it is not improbable 

 that under cultivation the juiciness would increase. In such a 

 case the panuban might become a fruit of commercial im- 

 portance. 



B. A. No. 5160 (Lias, Bontoc). 



Citrus mitis Blanco. CALAMONDIN. 



A small, somewhat spiny tree, 4 to 6 meters tall; young growth green- 

 ish; leaves elliptic oblong, 4 to 9 centimeters long and about 4 centimeters 

 wide, crenulate; base acute; apex usually emarginate; petiole scarcely 

 winged, 10 to 15 millimeters long; flowers axillary, solitary, rarely in 

 pairs, 21 millimeters in diameter, fragrant; petals white, reflexed; stamens 

 18 to 20, unequal; filaments united into groups; ovary globose, 6 to 8 

 loculed; style slender, distinct; stigma knoblike; fruit globose, ora-nge 



