98 The Philippine Journal of Science mi 
CITRUS HYSTRIX DC. Cat. Hort. Monspel. (1813) 97. 
To this species I refer G. E. S. 42, locally called limon china, a form 
with depressed-globose fruits, McGregor 511, locally called limon ademelo, 
a form with globose-ovoid fruits, and McGregor 416, locally called alangha. 
It is suspected that the first one, G. E. S. 42, is the form recorded by 
Safford as Citrus bergamina W. & A. 
Citrus hystrix DC. is widely distributed in India and Malaya. 
CITRUS MEDICA Linn. Sp. PI. (1753) 782. 
G. E. S. 43, locally known as setlas, McGregor 417, locally known as 
limon iyat. The former is probably typical C. medica, the latter has fruits 
quite like those of the ordinary lemon and is probably the var. limon Linn., 
recorded by Safford with the local name limon real. 
Cultivated in all warm countries. 
CITRUS NOB1LIS Lour. FI. Cochinch. (1790) 466. 
Recorded from Guam by Safford. 
A native of southern China, now cultivated in all warm countries. 
CITRUS LIMA Lunan Hort. Jamaic. (1814) 451. 
Citrus hystrix DC. var. acida (Roxb.) Engl, in Engl. & Prantl Nat. 
Pflanzenfam. 3 ' (1896) 200. 
Citrus acida Roxb. FI. Ind. 2 (1832) 390. 
The lime is recorded from Guam by Safford; I have seen no specimens 
from that Island. A native of tropical Asia, now in all tropical countries. 
TRSPHASI A Loureiro 
TRIPHASIA TRIFOLIA (Burm. f.) P. Wils. in Torreya 9 (1909) 33. 
Limonia trifolia Burm. f. FI. Ind. (1768) 103. 
Limonia trifoliata Linn. Mant. 2 (1771) 237. 
Triphasia trifoliata DC. Prodr. 1 (1824) 536; Safford 391. 
McGregor 521, Mrs. Clemens s. n., G. E. S. 273, 372, locally known as 
limon de china. 
A native of tropical Asia, now widely distributed in the tropics of the 
Old World, introduced in other regions. 
BURSERACEAE 
CANARIUM Linnaeus 
Mr. Safford records an introduced species known as brea blanca, but does 
not state that he saw specimens, taking at least a part of his data from 
Olive y Garcia’s list of Guam trees. Mr. W. F. Wight has worked out the 
species as “Canarium indicum Stickman Herb. Amb. (1754)”, to which he 
reduces Canarium commune Linn. (1767). The combination Canarium ind- 
icum is not made in the original edition of Stickman’s paper (1754), where 
the species of Canarium are listed on pages 9 and 10, but only under the 
Rumphian names, although it does appear in the reprint, Amoen. Acad. 4 
(1759) 143. It seems far more likely to me that the tree known as “brea 
blanca” in Guam has been introduced from the Philippines and is Canarium 
ovatum Engl. ( C . pachyphyllum Perk.), a species allied to, but apparently 
distinct from Canarium commune Linn. 
