210 PHILIPPINE RESINS, GUMS, AND OILS 
The yield of oil, calculated from the weight of the whole fruit,” 
was 0.56 per cent and from the peel alone 1.29 per cent. The 
oil has been employed as an ingredient of shampoos. 
The tree is said to bear fruits within five years after planting. 
The fruits are produced during the entire year, but most abun- 
dantly during the rainy season. In places where they are grown 
they sell for 5 centavos per hundred during the wet and 20 
centavos per hundred during the dry season. Samuyau is said 
to be very delicate, and to need careful attention, and in Cebu, 
during the dry season, even daily watering. 
Citrus micrantha var. microcarpa is a shrubby tree about 4.5 
meters tall. It has slender branches and small, weak spines., 
The leaves are thin, with a distinct fragrance, 5.5 to 8 centi- 
meters long, and 2 to 2.5 centimeters broad. The flowers are 
white with a trace of purple on the outside, and 5 to 9 millimeters 
in diameter. The fruit is 1.5 to 2 centimeters in diameter, 
roundish in outline, and greenish lemon-yellow. ; 
This species is abundant in Cebu and other islands of the 
Bisaya group. 
CITRUS Sp. GURONG-GURO. 
Local names: Bungkalot (Laguna); kaburau (Iloko); kolison, muntai 
(Tayabas) ; gurong-guro (Pangasinan, Zambales) ; swangi (Manila); tibu- 
lid (Bulacan). 
GURONG-GURO ‘ 
This species has a very fragrant rind which is mixed with 
coconut oil for use on the hair. The whole fruit is also mixed 
with gogo (Entada phaseoloides) bark as a shampoo. Cloves 
are sometimes put into the rind and then the fruits squeezed 
in the hands to give them a pleasant odor. The fruit of this 
species is about 5 centimeters in diameter, with a very rough¢ 
irregularly ridged, green rind, and with a nipple-like protuber- 
ance at the base. The rind is rather thin, and the fruit is not 
edible. 
Genus CLAUSENA 
CLAUSENA ANISUM-OLENS (Blanco) Merr. (Fig. 71). KAyYuMANis. 
Local names: Dayap-daydpan (Laguna); kayumanis (Rizal). 
CLAUSENA ANISUM-OLENS OIL 
The leaves have an odor much like that of anise. Bacon * says 
that alcoholic extracts also have a very strong anise-like odor. 
According to him, it is possible that this plant could be used 
_ Se 
* Bacon, R. F., Philippine terpenes and essential oils, III. Philippine 
Journal of Science, Section A, Volume 4 (1909), page 130. 

