OF ARTS AND SCIENCES. 287 
Aspidistree. The Asparagineous tribes proper (with 180 species) 
are not represented in America, but are peculiar to Africa (with the 
Mediterranean region), Australia and Southern Asia, only such out- 
lying genera as Astelia, Luzuriaga and Herreria occurring in South 
America. The Nolinee@ may be considered as taking their place in 
North America. 
The Hemerocallidee (36 species), of the same Old World region as 
the Asparaginee, are represented in America by the one species of 
Hesperocallis in Arizona, which may be included in the tribe not- 
withstanding the anomalous character of the seeds and root. The 
Yuccee, of Mexico and the adjacent warm dry region of the United 
States, in like manner replace the Aloinee and Sansevieree@ of Africa 
and Southern Asia. 
The Liliaceous tribes are in general very polymorphous in their 
characters. The principal one, the Liliee (of 205 species), which is 
peculiar to the northern temperate zone and with four of the seven 
genera common to both continents, may be divided into nearly as 
many subtribes as genera. JLloydia and Gragea, chiefly Asiatic, in 
some respects resemble the Phalangiee@, while Calochortus, of Califor- 
nia and Mexico, and including several well-marked subgenera, is 
differentiated even more widely in the direction of the Melanthacee. 
In the southern hemisphere the only approach to this tribe is found 
in the Philestee of two monotypical genera in Chili and Patagonia. 
The tribe Uvulariee, of a dozen small genera and about 40 species, 
is more widely distributed in its types, inasmuch as besides the seven 
genera of temperate North America and Asia (one species of Streptopus 
ranging westward from America to Central Europe), Africa and S. 
Asia have a representative in the genus Gloriosa, Australia in 
Burchardia and its allies, and Chili in Callixene. The division of 
Uvularia itself, which seems to be required, affords an opportunity to 
honor the memory of the lamented botanist, Mr. William Oakes, 
whose persistent zeal in investigating the flora of the fields and 
mountains of his native New England makes appropriate the union 
of his name with one of the plants which he himself knew so well. 
The Triliee are a small tribe exclusively northern, the principal 
genus Trillium American (with one species entering E. Asia) but 
represented in Asia by two nearly allied genera, Paris and Trillidium, 
of which the first also occurs in Europe. Less near are the two other 
genera Medeola and Scoliopus, which occupy respectively the eastern 
and western coasts of North America. The tribe has no counterpart 
in the southern hemisphere. 
