Analysis of juice.
| Per cent. | |
| Acidity (citric) | 5.41 |
| Sucrose | None. |
| Sugar | 2.41 |
| Protein | .33 |
| Ash | .39 |
Analysis of pulp.
| Per cent. | |
| Acidity (citric) | 2.73 |
| Protein | 1.03 |
| Ash | .58 |
The alsem was considered a variety of the mandarin in Bulletin No. 27, Plate IV, but a closer study of the plant and fruit shows that it differs so greatly from all other Philippine species of the genus as to be entitled to specific rank, and it has been named in honor of Dr. H. J. Webber, director of the citrus experiment station, Riverside, California, the association with whom, in connection with his citrus and pineapple breeding work, more than any other cause influenced the writer to take up the improvement of tropical economic plants.
The Bontoc local name “alsem” is here proposed as the vernacular name for C. webberii. In previous publications by the writer it was called the “mandarin lime,” which is hardly suitable, however, since while it has certain resemblances to the mandarin yet is distinct from it, and again, its only resemblance to the lime lies in its acidity and ade-making qualities; moreover the name “mandarin lime” is too long for popular use.
B. A. No. 853 (Bulacan), 2275 (Manila), 4292 (Bontoc).
Citrus webberii var. montana. Cabugao.
A shrubby tree with slender branches and small, weak spines, sometimes absent; young growth green; leaves 8.5 to 14 centimeters long, 3 to 3.5 centimeters broad, ovate to ovate oblong, crenate, dark green above, shining; base broadly acute to rounded; apex blunt pointed, usually retuse; petiole 24 to 38 millimeters long, with narrow wing margin, in large leaves sometimes 17 millimeters broad; flowers not seen; fruit roundish oblate, about 45 millimeters across, somewhat corrugate, 8 loculed.
Budwood and fruits of the cabugao were forwarded to the Bureau by Mr. A. M. Burton, from the Mountain Province. The writer did not have the opportunity of examining the fruit, of which, however, an excellent photograph was made, and, to date of writing the plants at Lamao not having bloomed there has been no chance to examine the floral characters. The general character of the plant and fruit indicates that the cabugao is a form of the alsem.