>/4 
26 
its length; marginal teeth 6-12 lines apart, only 1 or at most i£ 
lines long, hard and sharp, deep brown. The flowers are report¬ 
ed as having a yellowish-green tube ; limb and filaments and the 
anthers, before opening, are orange. The flowers before me 
belong to two forms, one with longer (1 inch) pedicels and larger 
flowers, the other with smaller flowers on shorter (3-5 lines) 
pedicels. The ovary of the former is 16-18, the tube 4, and the 
lobes 10-11 lines long; filaments not twice as long as lobes ; an¬ 
thers 11 lines long. The ovary of the smaller flower is 15, tube 
2, lobes 7-8 lines long, and the exsert part of the filament longer 
than the whole perigon; in the former the stamens are inserted 
a little below the base of the lobes, in the latter at the very base 
itself. The capsule of the latter is rT-if inches long and 7-8 
lines wide ; seeds 3 lines wide. 
** Tubus perianthii lobis brevior vel aequalis; stamina medio tubo inserta. 
f Tubus lobis brevior. 
' 13. Agave Shawii, n. sft.: subacaulis; foliis perviridibus 
erecto-patulis supra basin dilatatam vix denticulatam paulo 
contractis ovatis acutis spina valida late excavata acuminatis, 
margine corneo fusco vix solubili aculeis subcontiguis maximis 
sursum curvatis vel varie flexf^ornato ; scapo valido bracteis 
foliaceis triangularibus toto imbricato ; ramis paniculae horizon- 
talibus seu superioribus adscendentibus apice glomerulum ftorum 
subsessilium compactum foliaceo-involucratum gerentibus; ova- 
rio prismatico perigonio vix breviore, lobis lineari-oblongis sub- 
erectis tubo late infundibuliformi medio stamina paulo exserta 
gerente duplo longioribus, stylo stamina superante sagpius arcuato ; 
capsula prismatica acuta. 
On the arid hills which overlook the sandy strand of the Pacific 
in the southwest corner of California, where the boundary is 
marked by the initial monument, this fine species, growing to¬ 
gether with Cereus Emoryi , was discovered by Dr. Parry in 
1850, and a full description made ; from his memoranda Messrs. 
Parker and Hitchcock of San Diego re-discovered it a few months 
ago and supplied me with most instructive photographs and 
excellent specimenslast summer Dr. Palmer collected it with 
immature fruit, and in November*the above named gentlemen 
found it in full bloom and sent fresh bunches to St. Lquis. This 
* 
