4 BULLETIN 74, HAWAII EXPERIMENT STATION 
duced near sea level on both the windward and the leeward side of 
Oahu. Plantings farther inland at 100 to 1,200 feet elevation make 
vigorous growth but rarely produce any comparatively large crops 
of fruit. A small planting made at the central station in Honolulu 
in 1924, at about 60 feet elevation, gave a heavy crop in the summer 
of 1927. The plants blossomed abundantly once or twice in succeed- 
ing years, but set very few fruits, even though carpenter bees were 
observed visiting the flowers, which, in this variety, are open in 
the afternoon only. Hand-pollination has given no better results. 
These unsatisfactory pollination habits are no doubt due in part to 
protandrous characters peculiar to certain species of Passiflora. 
Good yields of this variety have been obtained by the station and 
cooperative growers, mainly in hot, dry localities where the pollen 
may have a chance to become relatively dry, so that it may be easily 
transmitted by both the breezes and the carpenter bees, and where 
the warm, dry air encourages early maturity of the stigmas of the 
pistil before the closing of the flowers at nightfall. For good growth 
and vigor under these conditions, irrigation would usually be re- 
quired. Special attention must also, be given to the arrangement of 
the rows in the field and to providing a type of trellis which will give 
the plants a chance to expose all of the flowers to strong sunlight 
and free circulation of the air. The warm, dry atmosphere tends 
to ripen the stigmas before it is too late in the afternoon for cross- 
pollination by natural agencies. 
COMPOSITION OF FRESH PASSION FRUIT (PASSIFLORA EDULIS) 
Kesults of analyses of fresh passion fruit are given in the follow- 
ing tabulation : 
Fresh passion fruit: Percent 
Rind 51.00 
Pulp (including seeds and 
juice) 3 49.00 
Seeds 20.20 
Juice 28.80 
Rind on moisture-free basis: 
Protein (NX 6.25) 9. 53 
Crude fat (ether extract) _ _ .60 
Nitrogen-free extract 52. 84 
Crude fiber 30.10 
Total ash 6. 93 
Calcium (Ca) .46 
Phosphoric acid (P) . 18 
Seeds on moisture-free basis: 
Protein (NX 6.25) 12.70 
Crude fat (ether extract) _ _ 8. 32 
Nitrogen-free extract 18.36 
Crude fiber 59.20 
Total ash 1.92 
Seeds on moisture-free basis — 
Continued. Percent 
Calcium (Ca) .03 
Phosphoric acid (P) .66 
Juice as prepared from fresh 
fruit: 
Water 79.80 
Protein (NX 6.25) .60 
Fat 
Crude fiber 
Ash . 
Carbohydrates (by differ- 
ence) 19, 
Acidity (calculated as cit- 
ric acid) _ 2. 
Calcium (Ca) 
Phosphoric acid (P) 
Iron (Fe) 
Calories per 100 g 79 
48 
10 
30 
005 
018 
00034 
In a study of the nutritive values of Hawaiian fruits by the 
Hawaii Experiment Station, it was noted that the passion fruit 
has a comparatively high sugar content and is low in calcium, phos- 
phorus, and iron. 
Hare and his coworkers (7, p. 111$) state that several species of 
Passiflora have some medicinal value, but give nothing on this 
3 Fruit pulp without seeds and juice, which consists of a few thin skins, not determined. 
