268 BOTANY. 
Western New Mexico and Northern Arizona; Rocky Canon, Roth- 
rock (274), in 1874. Parry, Bischoff, only fruit. Dr. Rothrock’s observa- 
tions and very complete specimens enabled me to give a connected account 
of this species, of which fragments only had been known for many years. 
Rev. Mr. Greene noticed the abundant secretion of a sweetish liquid filling 
the tube, which has also been observed in other species. The rootstock is 
used as a substitute for soap by the natives, under the name of Amole, 
much like that of Yucca, and, when roasted, is considered a great delicacy, 
named Mezcal. 
Agave Patmert, Engelm. Agave, /. c. 319.—Stemless; leaves lance- 
olate, 10-20’ long by 2-24’ wide, attenuate into a slender, terete, narrowly 
channelled, brown spine; marginal teeth flexuous or recurved, dark brown; 
scape as in the last; panicle loosely branched; flowers 2’ long; perigon 
whitish, lobes a little shorter than tube, stamens from’ its middle, and, 
together with anthers and style, long exsert, purplish; capsule cylindric, 
stipitate ; seeds small, roughish. 
Camp Bowie, Arizona, Rothrock (496), 1874; Palmer, in Southern 
Arizona. Similar to the last, but readily distinguished by its longer, nar- 
rower leaves and the other characters enumerated. Used for the same 
purposes as the last. 
ALISMACEZ. 
TRIGLOCHIN PALUSTRE, L.—South Park, Colorado (952). 
TricLocHin MariTimuM, L.—Alkaline plains of South Park and San 
Luis Valley, Colorado (942, 951). : 
NATADEZ. 
PoraMOGETON GRAMINEUS, L., var. HETEROPHYLLUS, Fries—South Park, 
at 10,000 feet elevation (961). No mature fruit. 
PoTaMOGETON PERFOLIATUS, L., var. LANCEOLATUS, Robbins?—Twin 
Lakes, Colorado (960). 
Poramoceton Marinus, L.—Twin Lakes and San Luis Valley, Colo- 
rado (955). 
PoTaMoGETON PecTInaTus, L. (959). 
Naras mMasor, Roth—Huntington Valley, Nevada. 
