320 AMARYLLIDEZ OF WHEELER’S EXPEDITION. 
EXPLANATION OF PLATE IV. 
Fig. 1. Diagram of the flower. Three exterior lobes of the perigone cover the thin margins of the 3 interior ones; 6 stamens 
opposed to the lobes ; 3 carpels opposed to the three exterior lobes, each with two series of ovules ; in the centre the 
stigma, its 3 lobes alternating with the carpels. 
Fig. 2. Top of the flower-bud, showing one interior between two exterior lobes. 
Fig. 3. The same, inside, exhibiting the broader hood of the inner lobe between the longer and narrower outer ones, all of 
them downy below the ti 
Fig. 4. An oe bud in the forenoon of the first day ; concn begin to straighten, raising the anthers, apparently in 
rregular order, above the perigone ; style quite s 
Fig. 5. tne of the same, with style and filaments cut os ihe perigone is seen in full development before it begins to 
wither ; insertion of the filaments in the middle of the tube, the inner one slightly lower than the outer ones. 
Fig. 6. Flower fully open on the first evening ; filaments straight; anthers opening at the upper and lower end ; ; Style not yet 
of the length of the filaments. 
Fig. 7. Flower on the third day : anthers and perigone shrivelling ; filaments yet erect ; style of nearly full length ; stigma 
yet closed. ; 
Fig. 8. Flower on the fifth day: perigone and filaments wilted ; style fully developed ; stigmatic lobes separated and bearing 
a large 7 of glutinous liquor. — All these figures in natural size. 
Fig. 9. Stigma close 
Fig. 10. Same with ea lobes, both magnified 4 times. 
Fig. 11. Pollen grains magnified 100 times: one intact, slightly elliptic ; the other, developing its tube and somewhat 
mtracted. 
VII. AMARYLLIDEA OF WHEELER'S EXPEDITION. 
From Report, erc. Vou. VI. Botany. By J. T. Rorwrock. 1878. 
vE UraneEnsis, Engelm., Bot. King’s Report, 497 ; Engelm. Agav. in Trans, Acad. St. Lonis, 3, 308. — [267] 
fecea hans suberect, or outer ones spreading, lanceolate, tapering from a broad base, concave, 6-12 inches long, 
1-2 inches wide, not constricted above the a — thick, hard, glaucous and rough, terminating in a long (1 inch) 
pale spine, with broad whitish teeth on the m ; flowering stalk 5-7 feet high, wlth ix spik elike raceme of yellow 
flowers each 1 inch long, in pairs, or often in Eta of 4, on distinct pedicels ; lobes 3 times longer than the funnel- 
shaped tube, which bears the stamens in the middle ; filaments and style not much longer than the perigone ; capsule 
oval subcylindric, about 1 inch long. — Northern Arizona, Bischoff, to Southern ls 
GAVE Parryt, Engelm., Agave, 1. c. 311. (A. Americana, var. ? latifolia, Torr. Bot. Mex. Bound. 213.)— 
Stemless ; numerous short and broad (9-12 inches long and 3-3} inches wide) leaves crowded around the base of the 
stalk pale, glaucous, with small, almost black, spiny straightish teeth, and with a dark horny margin toward the cus- 
pidate tip, which terminates in a robust, somewhat triangular, black spine 1 inch in length ; stout scape 8-12 feet high, 
bearing a large branched panicle of cream-colored flowers over 2 inches in length ; perigone deeply 6-parted ; lobes 
les as long as tube, which bears the long-exsert stamens in its throat ; capsule broadly oval, sessile ; seeds 
arger than in either of the other species. Weste rn New Mexico and Northern Arizona; Rocky Caiion, Rothrock [268] 
psu in 1874, Parry, Bischoff, only fruit. Dr. Rothrock’s observations and very complete specimens enabled me 
to give a connected account of this species, of which fragments only had been known for eee 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 lanceolate, 10-20 inches long by 2-2} inches wide, 
attenuate into a slender, terete, narrowly channelled, brown spine ; marginal teeth flexuous or recurved, dunk brown ; 
scape as in the last ; panicle loosely branched ; flowers 2 inches long ; perigone whitish, lobes a little shorter than 
tube, stamens from its middle, and, together with anthers and style, ome exsert, purplish ; capsule cylindric, stipitate; 
seeds small, roughish. Camp Bowie, Arizona, Rothrock (496), 1874; Palmer, in Southern Arizona. Similar to the 
last, but readily Gectigiuletied by its longer, narrower leaves and the other characters enumerated. Used for the same 
purposes as the last. 
