C 268 
s 
^/Western New Mexico and Northern Arizona; Rocky Canon, Rotli- 
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,f 
much like that of Yucca, and, when roasted, is considered a great delicacy, 
named Mezcal. 
Aoave Paemeri, Engelm. Agave, l c. 819.—Stemless; leaves lance¬ 
olate, 10-20' long by 2-2wide, attenuate into a slender, terete, narrowly , 
channelled, brown spine; ^marginal teeth flexuous or recurved, dark browns 
sc^g®#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. , ^I\ ' 
Gi< 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. j 
ALISMACEJE. 
Trio^^hi^palustre, L.—So)(th Park, Colorado ('952). 
TRiGLoefeta Waritimum, L.—^Aikaline plains of South Park and Sani 
Luis Valley, Cn^ado (942, 951^. \ / 
AsrAiADte®. 
Potamogeton gi^mineW, L., vap^HET^ROPHYLLUS, Fries.—Soutli Park, 
at 10,000 feet elevatioV(; 96 /). Nj^mature fruit. 
Potamogeton PERF^xm^.Tus^L., var. lanceolatus, Robbins?—Twin 
Lakes, Colorado (960). / \W* \ ' 
Potamogeton marjnus^eL— 1 Twin Lakes and San Luis Valley, Colo¬ 
rado (955). • / / 
Potamogeton pegt^natus, Ia1959). 
Naias major, Rgtli.—Huntington Valley, Nevada. 
