THE FLORA OF RAROTONGA. 303 
PANICUM AMBIGUUM, Trin.—Open places throughout the island, plentiful. 
Pacific Islands, northwards to Malaya and India. 
PANICUM PILIPES, Nees et Arn.—Fringing the sides of water-courses at the foot of 
the hills, not common. 
Pacific Islands and Australia, northwards to Malaya and Ceylon, Mauritius and 
Madagascar. 
Panicum (§ DIGITARIA) SANGUINALE, Linn.— Everywhere in the cultivated parts of the 
island. Two varieties are common, which Prof. Hackel identifies as var. vulgare, Doell, 
and var. timorense, Hackel. 
Cosmopolitan in warm climates, 
ISACHNE DISTICHOPHYLLA, Munro, in Hillebrand, Flora of the Hawaiian Islands, 
p. 504 ?—Summit of Mount Tekou, at 1800 ft.; Mount Taitukura, at 1500-2000 ft. 
A remarkable species, with hard, woody, bamboo-like stems 3-6 ft. high. Prof. Hackel 
remarks that ** the description coincides well, but in your specimens the spikelets are not 
always quite glabrous as in the Hawaiian plant, but this is a character somewhat variable 
in many species of Jsachne.” Dr. Stapf states that it was also collected in Rarotonga by 
Mr. T. B. Cartwright in 1889. 
OPLISMENUS cOMPOsITUS, Beauv.—Shaded places at low elevations throughout the 
island, very plentiful. A very variable plant. One form approaches O. undulatifolius, 
Beauv., another is identified by Dr. Stapf with a plant named O. emulans, R. Br., by 
the late General Munro. 
All warm countries. 
CENCHRUS ECHINATUS, Linn.—Roadsides, waste places, &c.: a most troublesome weed. 
A common tropical weed. 
*STENOTAPHRUM AMERICANUM, Linn.—Has been introduced by the European settlers, 
and is fairly well established in several places. 
Tropical regions generally. 
STENOTAPHRUM SUBULATUM, Trin.—Common in shaded and sandy places near the sea. 
Pacifie Islands, Malay Archipelago, Mauritius. 
THUAREA SARMENTOSA, Pers.— Sandy shores, common just above high-water mark. 
Throughout the Pacifie Islands, also in the Malay Archipelago and Mauritius. 
GARNOTIA CHEESEMANI, Hackel, sp. nov.—* Perennis. Culmus adscendens, circ. 30 em. 
altus, valde ramosus, gracilis, teres, glaberrimus, dense foliatus, apice breviter 
nudus. Folia glabra; vagine subcompresse, internodia plerumque superantes, 
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