105 [ 26 ] 
cultivation, but have not seen as yet flowers or fruit from any of them; 
still they cannot but ae to my genus chimoceretts , to judge- from 
analo 
Some Mamunillariae of Cosihuiriachi are distinguished by their compact 
shape; the tubercles are very short, globose, or even hemispherical, the 
spines strong, numerous, rag ‘and adpressed, the fruits central from 
a woolly vertex: Mammillaria compacta.** Another, M. gummifera,3* 
belongs together with two tpévies from Texas, and from the mouth of the 
Rio Grande to the section Angulares, with pyramidal 4-angled tubercles, 
and milky juice, which, hardening, forms a gum. A third species belongs 
to Crinitae, and is a most elegant little plant with numerous hairlike shear 
ating and one stout, hooked central spine; I have nashee it M. barbata 
—-—— 
spines or bristles 1 to 2, page about 4, and lateral 7 to 9 lines long; central 
spine much stouter, 1 inch long. 2 
$ Mammillaria compacta, n. sp., simplex, hemisphaerica, s. depresso- 
globosa; tuberculis abbreviatis , ovoideo-conicis, sulcatis; areolis ovato-lan- 
ceolatis, junioribus albo-tomentosis; aculeis omnibus radialibus, 13-16 
subaequalibus, robastis, recurvatis, adpressis, intertextis, albidis, superiori- 
_ bus apice fuscis; sulcis tuberculorum axillisque junioribus et vertice tomen- 
tosis; floribus in vertice congestis; baccis ellipticis perigonio coronatis, 
viridibus; patina obovatis, laevibus, fulvis. 
=7iDoaiheielatdak —Plant 2 to 3} inches in diameter and 1} to 24 inches 
high; tubercles in 13 rows, 4 lines high, 6 lines wide at base; spines in- 
terlocking, and thereby often deformed and twisted, stout, 7 ‘to 10 lines 
ng. 
$8 Mammillaria feet n. sp., lactiflua, simplex, hemisphaerica, 
bs etn quadrangul ato-pyramidatis ; Pag areo - sque ems albo- 
s 
files | in Tones} and M. heap aaerdo ngs, ined., from whe mouth 
of the Rio Grande; both are also simple, lactescent, with pyramidal tuber- 
cles, and both have small reddish white flowers, and long clavate scarlet 
berries, without the remnants of the flower. Tt is a fact which I have 
repeatedly observed, and in a considerable number of species, that 
rin or clavate-berries of the n sammillariae cop ne destitute of the 
ohne gg 500 haben: n. Sp., simplex, iota depress; ne 
axillis nudis; aculeis radialibus numerosissimis pluriserialibus, cree 
piliformibus -sub-40; intevioribus paulo “sobustioribus fulvis 10-1 
centrali wigrehs roles ; uneinato, fused, ¢ erecto ; baccis oblong; viridibus, 
apice floris rudimento ‘coronatis. ss 
