14 SEEDS AND PLANTS IMPORTED. 



41712 to 41717— Continued. 



41715. Citrus eimetta AJBOMATICA Wester. Rutacese. 



A spiny shrub, with rather slender, willowy, drooping branches and 

 sharp spines ; young growth light green, of pleasant and distinct odor 

 when bruised ; leaves 7.5 to 10 centimeters long, 3.5 to 5 centimeters 

 broad, dull green above ; petioles 6 to 19 millimeters long with a narrow 

 wing margin ; flowers solitary or in cymes of four, terminal or axillary, 

 28 to 35 millimeters across ; calyx rather large, petals four to five, white 

 with a trace of purple on the outside ; style not distinct, as in Citrus au- 

 rantium, but rather similar to that of Citrus medico,', fruit 5 centimeters 

 long, 4 to 4.5 centimeters across, roundish to roundish oblong ; skin thin, 

 smooth, lemon yellow, pulp pale green, juicy, sharply acid, sometimes 

 almost bitter ; juice cells long, slender, and pointed ; seeds very numerous, 

 small, and plump, polyembryonic. This form seems to be fairly well dis- 

 tributed, and material has been propagated at Lamao from such distinct 

 points as Mindoro, Palawan, and Bangued. Unquestionably a lime, it is 

 quite distinct from the ordinary lime in habit and in the aromatic tender 

 foliage, in the purplish petaled flowers, which are larger than those of 

 the lime, and in the greater number of stamens. (Adapted from the 

 Philippine Agricultural Review, first quarter, 1915, pp. 25 and 26.) 



41716. Citrus medica L. Rutacese. Citron. 



41717. Citrus medica odorata Wester. Rutaceae. 



Tihi-tihi. A small thorny shrub, seldom exceeding 2.5 meters in height, 

 with sharp, stout spines ; young growth bright green ; leaves 7.5 to 11 cen- 

 timeters long, 4.3 to 6.5 centimeters broad, elliptical, rather thick and 

 leathery, serrate, of distinct fragrance ; base rounded ; apex notched ; 

 petioles very short, 4 to 6 millimeters long, not winged; flowers one to 

 four in axillary compressed cymes, sessile, rarely exceeding 38 milli- 

 meters in diameter; petals four to five, fleshy, white, with a tinge of 

 purple on the outside; fruit 60 to 65 millimeters long, 7 to 10 centimeters 

 in transverse diameter, weighing 300 to 475 grams, oblate, with a shallow 

 basal cavity, and sometimes a mammilate apex, more or less ridged 

 longitudinally, fairly smooth, clear lemon yellow; lenticels scattered, 

 depressed ; oil cells large, equal or a trifle raised ; skin rather thick : 

 pulp grayish, rather dry, sharply acid, of lemon flavor; juice cells long 

 and slender ; seeds many, sometimes 125 in a single fruit, short, broad, 

 and flattened. The tihirtihi is a rare plant found in cultivation in Cebu 

 and Bohol ; one plant has been seen in Misamis, Mindanao. The plant 

 is very precocious, fruiting as early as the third year from seed, ever- 

 bearing, and the fruit is used by the Filipinos in washing the hair. It is 

 not eaten and is of no commercial importance. The tihi-tihi differs 

 from the citron in its green, tender, highly aromatic growth, the leaves 

 having been found to contain 0.6 per cent essential oil. as analyzed by 

 the Bureau of Science. The fruit is strikingly different from the citron. 

 • Adapted from the Philippine Agricultural Review, first quarter, 1915, 

 pp. 22 and 23.) 



41718 to 41721. 



From Chungking, China. Presented by Mr. E. Widler. Received January 

 8, 1916. Quoted notes by Mr. Widler. 



41718. Citrus sinensis (L.) Osbeek. Rutaceae. Orange. 

 "Large orange. This orange grows plentifully in Szeehwan, is about 



11 inches in circumference, of very good flavor, contains a small number 

 of seeds, has a very thin skin and practically no pith." 



