148 ON A CHINESE CULINARY VEGETABLE. 
is common to both sexes, though Kunth, Trinius, Endlicher, and other 
agrostologists, who regard it as an abortive glume,* deny - He is, 
however, quite right. The same is the case, pA in the Ameri an speci 
but in that, the dilatation and hollowing out of the male nediodlé are far 
less marked, and the difference between those of the two sexes is very 
much greater than in the Asiatic one. This character alone will readily 
distinguish the two. Turczaninow observes f that his species also differs 
y the presence of an elongated rhizome, which he asserts to be wanting 
in - esculentum, I have no means of verifying this latter sateen but 
radical fibres from the collu esides pes by hollow-jointed 
rhizomes, as thick as a swan’s p of even twice that diameter. 
These r rhizomes run to some length, oe are clothed at the nodes, — 
they put forth stout fibres, with three ovate-lanceolate tough membran 
semitransparent scales, embr acing their entire cireumference, those pe 
the collum being about an ine lou ug. As remarked also by Turezaninow, 
- the lower nodes of the stem are copiously fibriferous, an nd the fibres 
present the curious character of being flaebád and densely pre 
something like the Pee of certain Ferns, as, for instance, my Dava 
Lorra n the living plant find the ligula fimbriate, as 
deseribed by Trinius; but, though produced to nearly an inch in length, 
mooth and m erely bifid at the extremit y. 
Eudliehert combined Hydropyrum with Hydrochloa, Beauv ; and 
Dr. Chapman,$ whilst admitting the latter C ec s Hydropyrun 
to Zizania, as does also Professor Asa Gr ay.|| Meissner** recognizes s both 
pdropyrim n m Zizania as valid genera, pA euin Hydrock hloa ; doubtfully 
to the form It must be admitted that the ‘Oryzeous genera are in 
, © 
with others, demand renewed examination, especially with regard to the 
homologous value of the so-called glumes of authors. 
glumes I do no pe gard this organ as o higher structural impo! 
any 
ion which the vend = Dipacne serotina, Lk., D. sinensis, 
—€ pa Seien. Jena 1 Lk., are 
3.252 
| n pu tates 
an. Bot. North. Un. Sats, o ed. 5 bstan- 
"s gp . Vase. Gen. 414, Com AES "The elder Reichenbach takes su 
tially the ew, dmitting 1 both Zizania and Hidrochloa (Repert.. Hort 
pt. ii. 36), to which latter he expressly refers Hydropyrum (op. cit. uy juried. 
++ e Padia of Zollinger and Moritzi, or the Zizania “ A: 
eudel (Svn . Gr , who quotes doub Ld st 
f course, our p ? 
concluding volume of the * Flora : "i : ding to the = age 
published t ears before Steudel's mono ph appea d, he d nA Ue 
describe the es, but copying Trinius, places it as a variet of diff 
If, however, there is no error in the ding osis, Z. dahurica must be quite bus 
= it is descri is superiorib ane ae a carelessly 
cemineis.” I suspect, however, the Dualo of the sp aparin has f 
reversed, for with racter e der 
revered, this exception the cho given accords w 
