180 CACTACEZ OF THE BOUNDARY. 
nudis; aculeis radialibus sub-12 albidis summis 3-5 paullo robustioribus apice fuscatis, lateralibus sublongioribus, 
inferioribus gracilioribus; aculeis centralibus plerumque binis divergentibus uncinatis fusco-atris radiales sub- 
zequantibus ; floribus lateralibus (?); sepalis exterioribus 13 triangularibus obtusiusculis fimbriatis, interioribus 
8 acutis margine petaloideis; petalis 12 lineari-lanceolatis acuminatis aristatis purpureis ; bacca majuscula ovato- [8] 
globosa succosa purpurascente floris rndimentis coronata ; seminibus obovatis basi acutis nigris scrobiculatis, hilo 
subventrali parvo angusto. (Tab. VIII. fig. 1-8.) 
New Mexico, near the Coppermines, Wright; near El Paso, Parry ; and on the upper Pecos, east of Santa Fé, 
Bigelow. — Stems 14-3 inches in diameter, hemispherical above, flattened or —— in the centre, and top-shaped 
below ; simple, as all the Mamillaria of that form usually are. Tubercles 5-6 lines long. Spines 4-6 lines in length, 
shorter in the southwestern, longer in the northeastern specimens ; uppermost ety at stouter than the others, 
with a brown tip, or smaller and slender, or entirely wanting; central spines usually 2 side by side, diverging ater 
or rarely one above the other, — sometimes only 1, or not seldom 3, the third one being below the two others 
hooks usually turned downward or in different directions. The flowers seem to be lateral, but very near the ver vip ; 
the fruit is moved more outward by the continuous growth of the plant; flower about an inch long and fully as 
wide ; petals and margin of inner sepals bright purple. Berry large, nearly an inch long, purplish. Seed similar to 
that of M. Grahami, but much larger, and the very small and narrow hilum ventral; length of seed 0.7 line. 
This species [ with pleasure dedicate to my friend Mr. Charles Wright, to whose indefatigable exertions botany 
owes so many new discoveries along the Mexican boundary line, and lately in more distant parts of the globe 
M. Goopripert, Scheer: globosa seu ovata, subsimplex ; vertice tomentoso; tuberculis ovatis abbreviatis ; 
axillis junioribus lanatis setigeris demum nudatis; aculeis radialibus 11-15 (plerunigtie 12-13) albidis apice sphace- 
latis intertextis, centralibus 3-4 (in plantis junioribus subsingulis) fusco-atris, superioribus divergentibus rectis seu 
rarissime subuncinatis, inferiore paullo longiore robustiore sursum hamato ; floribus in vertice Iateralibus parvis ; petalis 
lanceolatis acuminatis sordide flavidulis medio rubellis ; stigmatibus 3 virescentibus. (Tab. VIII. fig. 9-14 
Dry ravines near San Diego, California, Dr. Parry ; originally brought to England from the Island of Cerro, on 
the California coast. — One of the specimens of Dr. Parry, from which the above description was drawn, is 2 inches 
high and 14 inch in diameter ; the other is globose and rather depressed. The tubercles are 14-24 lines long, and of 
a somewhat corky texture, like those of M. Grahami, so that the dead ones retain their shape and do not shrivel up. 
The axils produce a very dense wood, and in it 5-8 stiff bristles, which often reach the length of the tubercle. The 
radial spines are 24-3} lines long, the uppermost one present or wanting ; the upper central spines, 2 or 3 in number, 
are straight, or rarely, in my specimens, with a tendency to form a hook ; the lower central spine is the longest one, 
41_5 lines long, — the narrow or rarely wide hook is turned upward or sidewise. Flowers 6-9 lines long, 6 lines wide, 
dirty-yellowish ; the petals with red midribs. 
EYDERI, Muhlenpf.— of which my M. applanata (Tab. IX. fig. 4-14) and M. hemispherica (Tab. IX. 
fig. 15-17), ‘pablished in “ Plante Lindheimeriane,” are different forms — is common throughout the southern parts 
of New Mexico, and may even extend into Sonora, according to Mr. Schott’s notes, unless what he has seen is a form 
of M. gummifera (Tab. TX. fig. 18-20), brought by Dr. Wislizenus from the mountains west of Chihuahua. The 
Sonora plant is stated to have 13 radial spines; the inferior ones are 6-8 lines and the superior ones 2-3 lines long ; 
the stout central spine is of the length of the latter. 
ANTHA, Sp. Nov, : simplex, hemispheerica seu vertice depressa, basi scien. lactiflua ; tuber- [9] 
culis pyramidato-quadrangulatis compressis basi productis axilla nudis ; areolis junioribus albido-villosis mox 
nudatis ; aculeis paucis (5-9) rigidis rectis vel recurvatis albidis seu flavidis (demum cinereis) apice eres, 
inferiorjbus paullo longioribus, centrali singulo robusto breviore porrecto seu sursum flexo et cum ceteris radiante 
rarius nullo ; floribus sordide albidis rubellisque ; ovario nudo; sepalis 12-14 lanceolatis ; petalis 14-16 BES 
lanceolatis acutis subintegris ; stigmatibus 6-7 stamina brevia vix excedentibus flavidulis ; _ bacea elongato-clavata 
incurva floris rudimenta dejiciente ; seminibus minutis obovatis regulosis fulvis. ( Tab. IX. fig. 1-3. 
Throughout New Mexico, from where it was first brought home by the Missouri {ee in 1847; often col- 
lected since by the different explorers of the botany of those regions. Flowers May and June. — Very nearly allied to 
the foregoing species ; distinguished by the fewer, more loosely arranged tubercles, — which rise from a much broader 
base, —and by the fewer, shorter, and stouter spines. Plants 3-5 ae in diameter, with a broad, top-shaped base, 
terminating in the large fleshy root ; tubercles 7-9 lines long, strongly quadrangular, somewhat compressed from 
above, arranged in 13 spiral rows. Spines, as indicated by the name, fewer than in the allied species, — 5-9, U usually 
about 6, lowest ones mostly a little longer than the lateral ones, 3-5 lines long, stout, and strongly subulate, often 
curved in different > iit upper spine wanting or often replaced by the stouter and a little shorter central spine, 
which is then turned upward ; spines in robust specimens dirty-yellowish with brown points, central one darker than 
the rest, — in young and weakly specimens they are whitish. Flowers 12-14 lines long, somewhat urceolate. Exterior 
petals longest, entire ; interior ones a little shorter, entire or slightly denticulate ; all whitish, with a broad rose- 
