37 
becomes very fleshy and the fruit attains the size of a large pear. 
Schizostachyum acutiflorum has very curious bundles of hairs on the 
scutellum, and the pericarp of the oblong fruit is quite loose and rugose. 
Some of the genera of the section Triglossee approach very closely in 
the structure of the spikelet the tribe Panicee. 
The Oryzew may be compared with the Bambusem. In regard to their 
leaves there is a great variety of forms, from broad, ovate, petiolate 
leaves in Pharus, to long, linear ones in Zizania, and short, narrow 
leaves rounded at the apex in Hydrochloa. There is also great varia- 
tion in the inflorescence. In some of the genera a number of bracts are 
arranged spirally around the main axis, while in others the inflores- 
cence is inclosed in a spathiform envelope. The normal number of 
stamens is six, although they vary from one to eight. The pistil 
usually branches into two plumose stigmas, with occasionally a three- 
branched style, as in Pharus. The lodicules vary from 2 to 3. There 
are long, linear fruits, as in Pharus, and oblong-linear fruits, as in Oryza. 
The Oryzec therefore resemble the Bambusee in the following respects: 
(1) They show great variation in the structure of their fruit and spike- 
jet. (2) Both have remarkably large epiblasts. (3) Some genera have 
the same number of lodicules. (4) Pharus has a style with three stig- 
mas. (5) Many of the genera have broad petiolate leaves and transi- 
tions between these to linear ones. (6) They have to a great extent the 
same geographical distribution, the larger number of the genera being 
indigenous to tropical America. It would appear therefore that the 
Oryzee are closely related to the Bambusew, and that together they 
represent the most primitive of the grasses, thus bringing them nearer 
to the other Monocotyledons (e. g., Palmacew). So far as it has been 
observed there appears to be no similarity between the Bambusew and 
Hordee, although they are looked upon by both Bentham and Hackel 
as being closely allied. 
The Zoysiew, Tristeginew, Andropogonee, Maydec, and Panicee, both 
according to the characters of the fruit and those of the inflorescence, 
according to Hackel’s classification, form another natural group, joined 
to the Oryzew through the Zoysiew and Tristeginew. The Chloridec, 
although regarded by both Hackel and Warming as being removed 
some distance from the Andropogonea, are like them in their fruit 
characters. 
The remaining tribes, Phalaridew, Agrostidew, Avenew, Festucee, and 
Hordee, from their fruit characters, form another group in the order 
named, which corresponds with the classification given by Hackel. 
