50 POLYPETAL.E. 
54. Pitheoolohium ($ Chloroleucon) palmeri, n. sp. 
Ramis tortuosis vel flexuosis junioribus petiolisque puberulis, pinnis 
kings. foliolis AVR e minutis ey pos sti me ioo e edees 
2 ie : 
in regione San Luis Potosi, alt. 6000—8000 ped., Parry et 
Pelo. 920. (Hb. Kew.) 
55. Heuchera minutiflora, n. sp. 
petiolisque patentim pilosis, foliis glabrescentibus cordato- 
*iccsut p an obseure lobatis crenato-denticulatis, denticulis apiculatis, 
floribus minimis cymoso-subspicatis, scapo haud gracili paucifoliato, 
calyce latiuscule campanulato albo-granuloso, petalis quam ealycis lobi 
vix longioribus, staminibus stylisque inclusis vel brevissime exsertis. 
lexico: in monte Popoeatepetl?, H. Christy. (Hb. Kew.) 
56. Heuchera longipetala, Ser. (char. amplif.). 
Ferrugineo-pilosa, foliis eordato-orbieularibus obscurissime lobatis 
aristulato-dentatis, floribus parvis eymoso-panieulatis, scapis pedicel- 
lobis ingequalibus, petalis linearibus quam calycis lobi duplo poit, 
staminibus exsertis.— Heuchera longipetala, Ser. in DC. Prodr. i 
Calques des Dess. Fl. Mex. 423. 
Mexico, in montibus supra Toluean, dltius. 956. (Hb. Kew.) 
57. Heuchera orizabensis, n. sp. 
Ferrugineo-pilosa, pilis usce foliis cordato-orbicularibus 
obseure 5—7-lobatis 5—7-nerviis aristulato-dentatis, floribus mediocribus 
eymoso-panieulatis, scapo haud pus calyce glanduloso-hirsuto late 
campanulato, lobis latissimis rotundatis, eomm linearibus quam calycis 
lobi € duplo longioribus, staminibus ex 
co: in cacumine Orizabse, alt. 10, 00012 ,500 ped., Linden, 577 ; 
Qaleotti, 2885. (Hb. Kew.) 
58. Sedum fuscum, n. sp. 
uum, pumilum, erectum, ramosum, glabrum, ramis gracilibus, foliis 
p g nibus numerosis tee ian 
cire cro 
Mexico: in regione San Luis Potosi, alt. 6000—8000 ped., Parry et 
Palmer, 235. (Hb. Kew.) 
59. Sedum parvum, n. sp. 
Herbaceum, perenne, ezspitosum, nanum, ramosum, ramis brevibus 
crassiusculis, folis crassis carnosis oblongis patentibus, floribus flavis, 
1  carnosis brevibus c-— petalis apice dorso carinatis 
r a fere vfi coo minutis, carpellis maximis 
E Sirene ci recurvis coron 
