IIo BOTANICAL GAZETTE |AUGUST 
The representation of Cyperaceae is roughly as follows: Cyperus 
17 spp., Kyllingia 1, Fimbristylis 4, Eleocharis 1, Scirpus 2, Hypo- 
lytrum 1, Rhynchospora 4, Cladium 1, Baumea 1, Vincentia 1, 
Gahnia 5, Oreobolus 1, Scleria 1, Uncinia 1, Carex 5. 
Absent pests 
Hawaii is entirely free from any plants poisonous to the touch. 
To the botanist familiar with the distressing prevalence of these 
pernicious vines and shrubs in the continental woodlands, it is a 
relief to work one’s way through a Hawaiian jungle with the 
certainty of complete safety in this regard. Neither are there 
any stinging nettles. Mucuna urens, the well known “cow-itch” 
plant, whose pods are covered with stinging hairs, is naturalized 
_ in certain restricted areas on the islands of Maui and Hawaii. 
The Anacardiaceae are represented in Hawaii by a single 
arborescent Asiatic Rhus (R. semialata Murray var. sandwicensis 
Engler). This species extends from India and the Orient to 
Hawaii, and is non-poisonous. Our variety is a small tree, growing 
in isolated clumps in all the islands. 
It is to be hoped that the pernicious T. vernix, T. Siaoes and 
T. Toxicodendron of North America may never by any accident 
reach Hawaii. The noisome Paederia foetida was accidentally 
introduced a number of years ago, and its seeds, like those of 
Rhus Toxicodendron, are abundantly distributed by birds. It 
‘is now a pest in many ofthe valley, as it smothers all other 
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