Tas. 7433. 
RUMEX aywenoserates. 
Native of New Mexico and Arizona. 
Nat. Ord. Potyconacem.—Tribe Rumicex. 
Genus Rumex, Linn. ; (Benth. & Hook. f. Gen, Plant. vol. iii. p. 200.) 
Rumex hymenosepalus; glaberrima radice tuberosa, caulibus erectis elatis 
robustis, foluis oblongis ovato- v. lanceolato-oblongis acuminatis in 
petiolum crassum angustatis uudulatis pallide viribidus, reticulatim 
venosis, coste crassa, nervis primariis utrinque 6-10, stipnlis magnis 
hyalinis caducis, paniculis axillaribus et terminalibus densifloris pedi- 
cellis floribus hermaphrodis brevioribus basi versus articulatis, sepalis 
interioribus quam exterioribus multo majoribus amplis orbicularibus veno- 
in fructiferis basi cordatis intus e Caitogis integerrimis, akeniis 4 poll. 
ongis, 
R. hymenogepalus, Torrey Bot. Mewic. Bound. p.177. S. Wats. Bot. Calif. 
vol. ii. p. 8 and 479. Am. Journ. Pharm. 1876, p. 49; Aug. 1889, 
and April, 1893. Kew Bulletin, 1890, p. 63, and 1894. p. 167, 
Journ. & Trans. Pharmac. Soc. 1889, p. 187, and July, 1893, p. 42. 
Nugent in Foreign Off. Report, 1894, n. 1879. 
S. Saxei, Kellogg in Pacif. Rural Press, June, 1879. 
Considerable interest attaches to the plant here figured, 
on account of its tanning properties, which have led to its 
cultivation in the United States’ experimental station 
attached to the Agricultural College at Las Cruces, ‘‘ where 
the evolution of the plant from the wild to the cultivated 
state is being closely watched and recorded.” <A very 
full account of its history, chemical, and other properties, 
together with the steps being taken in America for its pro- 
fitable culture, will be found in the Kew Bulletin cited above, 
Its native name is Canaigre (or Ganagra), and the tan- 
ning material is contained in the roots in large quantities. 
These roots are described as globular or fusiform, two to 
six inches long, and three inches in diameter, of a dark 
reddish colour, and growing in clusters like sweet potatoes. 
Its properties are said to have been known to the Mexicans 
for more than two centuries. | 
R. hymenosepalus is a native of the driest regions of 
Northern Mexico and the South Western States of N. 
SrrTeMBER Ist, 1895, 
