Identifier: ornamentaltreeso00rock (find matches)
Title: The ornamental trees of Hawaii
Year: 1917 (1910s)
Authors: Rock, Joseph Francis Charles, 1884-1962
Subjects: Trees--Hawaii.
Publisher: Honolulu: (s.n.)
Contributing Library: Pennsylvania Horticultural Society, McLean Library
Digitizing Sponsor: LYRASIS Members and Sloan Foundation

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een introduced into many tropical countries to be planted as ashade tree. The wood is rather soft, and fibrous in texture. Theseeds are employed as a purgative as is also an oil expressed fromthem which is said to be less nauseous than Castor oil. In workingthis wood in the West Indies care is taken that the dust does notenter the eyes or nose as it is very irritant, produces inflammation,and may even lead to blindness. The milky juice when applied tothe eyes causes almost immediate blindness according to reportsfrom India. In Honolulu there are only a very few trees or perhaps only two,one in the Government Nursery grounds, the other on the corner ofPunahou Street and Wilder Avenue, on the vacant park-like lot,opposite the Pleasanton Hotel. Owing to its poisonous character itis not a desirable tree. Euphorbia pulcherrima Willd. POINSETTIA. The Poinsettia is a milky shrub reaching a height of twelve feet.The leaves are elliptical, the upper ones lanceolate and pointed, the Plate LIII.
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Hura crepitans Linn. Sand-box Tree, specimen with male (below) and female (extreme left above) flowers. Euphorbiaceae. 131 lower ones uniformly green and only the upper ones at the time offlowering, uniformly bright red. The inflorescence is terminal, theflowers are crowded and red; one or two large yellow glands arepresent on each of the involucres. The Potnsettia is only ornamental during the winter monthsabout Christmas time when it comes into flower, the conspicuous partis not only the flowers but the upper leaves, which turn bright red.It is a native of tropical America and Mexico, in which lattercountry it was discovered in 1828 by Graham. It is now cultivatedin many tropical countries and is quite common in Honolulu. Themilk\- juice is poisonous. After flowering the plant should be cutback. Euphorbia heterophylla L., known as Painted Leaf, is also fre-quently cultivated but much less so than the Potnsettia. It differsfrom the latter in the very variable leaves of which the lowe

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