No Observation Of A Star Helped Me To Fix The Latitude Within The Space Of A Degree.

After having passed the point where the Itinivini separates from the Cassiquiare, to take its course to the west towards the granitic hills of Daripabo, we found the marshy banks of the river covered with bamboos.

These arborescent gramina rise to the height of twenty feet; their stem is constantly arched towards the summit. It is a new species of Bambusa with very broad leaves. M. Bonpland fortunately found one in flower; a circumstance I mention, because the genera Nastus and Bambusa had before been very imperfectly distinguished, and nothing is more rare in the New World, than to see these gigantic gramina in flower. N. Mutis herborised during twenty years in a country where the Bambusa guadua forms marshy forests several leagues broad, without having ever been able to procure the flowers. We sent that learned naturalist the first ears of Bambusa from the temperate valleys of Popayan. It is strange that the parts of fructification should develop themselves so rarely in a plant which is indigenous, and which vegetates with such extraordinary rigour, from the level of the sea to the height of nine hundred toises, that is, to a subalpine region the climate of which, between the tropics, resembles that of the south of Spain. The Bambusa latifolia seems to be peculiar to the basins of the Upper Orinoco, the Cassiquiare, and the Amazon; it is a social plant, like all the gramina of the family of the nastoides; but in that part of Spanish Guiana which we traversed it does not grow in those large masses which the Spanish Americans call guadales, or forests of bamboos.

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