CACTACE^E. 



659 



petiolatis tenuibus ; stipulis lanceolatis petiolum adcequantibus ; pedun- 

 culis brevibus axillaribus uni-paucifloris ; fructu cequaliter trialato, 

 alis completis. 



Hab. Luzon ; on mountains near Banos. 



Stems slender, occasionally throwing out rootlets at the nodes, 

 therefore probably creeping ; the branches and whole plant glabrous. 

 Leaves nearly equal-sided, small (an inch or more in length), thin, 

 mate-oblong, coarsely and sharply toothed above the middle, acuminate, 

 sparingly feather- veined, pale, rounded or obtuse at the base, where 

 they are three-nerved or indistinctly five-nerved. Stipules lanceolate, 

 pointed, scarious, deciduous, 3 lines long, as long as the petiole. 

 Peduncles axillary, very short, forked, the filiform divisions or pedicels 

 shorter than the leaves, one-three-flowered. Divisions of the perianth 

 2, rounded, barely 2 lines long. Capsule orbicular in outline, equally 

 three-ioinged ; the wings complete from the base to the apex, even, a 

 line and a half wide. 



Ord CACTACEJ5. 



1. MAMILLARIA, Haw. 

 1. Mamillaria flavescens, DC. 



"M. caulibus pluribus ovato-cylindraceis e radice crassa; aculeis setaceis 

 rectis brunneis; floribus verticalibus (idtrapollicaribus) flams; sepalis 

 lineari-oblongis obtusis patulis reflexisve circa 20; petalis fere 20 

 ovato-oblongis subobtusis; stigmatibus 9 radiatis." Engelm. Ms. 



Mamillaria flavescens, DC Prodr. 3 ; p. 459; Pfeiff. Enum. p. 10? 

 M. proli/era, Haw. Synop. p. 177, ex Salm-Dyck. 



Hab. Near Lima, Peru. 



