128 SYNOPSIS OF THE CACTACEZ OF THE UNITED STATES. 
§ 1. PoLyAcanTHa, Salm. 
1. M. micromeris, E. in Bound. Comm. Rep. : parvula, simplex, globosa ; tuberculis minimis verru- 
ceformibus confertissimis ; areolis junioribus solum lana laxa vestitis ; aculeis setiformibus cinereis pluri- [261] 
seriatis, in plantis junioribus sub-20 eequalibus lineam longis, radiantibus in tuberculis floriferis 30-40 
undique epee saan ctis, superioribus 6-8 longioribus clavatis ; floribus minimis subcentralibus. 
a. If: major, tuberculis riaicetinne aculeis paucioribus rigidioribus 
From El Paso aulened, to the San Pedro River. Var. 8. near Saltillo. fond 3 to 14 inches in diameter ; B. 
often 2 inches or even more in diameter ; tubercles 3-1 line long, spines 3-1} lines long, in 8. 1-2 lines long ; upper- 
most spines of each areola in the fully developed plant 3 to 4 times«as long as the others, and ee clavate, 
surrounded by long and loose wool, which, together with the upper part of the long spines, breaks or falls off after 
fructification. Flowers (and even fruits) nearly central, 3 lines in diameter, light pink. — Near M. microthele, Muhlenpf. 
which, however, has 2 central spines. 
2. M. LastacaNnTnua, E. 1. c. : parvula, simplex, globosa; tuberculis teretibus ; aculeis setiformibus pilosulis s. 
denudatis 40-80 pluri-seriatis omnibus radiantibus ; floribus lateralibus albidis. 
On the Pecos River, in Western Texas : fl. in May. — Plant $ to 1 or even 13 inches high, and scarcely less in 
diameter; tubercles 2-3 lines long, spines 1}-23 lines long. Flower whitish or very pale pink, 6 lines long. — 
; Schindeons, Ehrenb, seems to be similar, but is much larger, and has large tubercles with woolly axilla, ete. 
§ 2. Crinir#, Salm. 
A. Aculeis centralibus rectis, 
3. M. pusiuua, DC., var. Texans, E. |. c. : ovato-globosa, prolifera, czespitosa ; tuberculis teretibus axilla longe- 
lanatis ; aculeis pluri-seriatis, extimis 30-50 capillaceis crispatis, interioribus 10-12 rigidioribus brevioribus albidis, 
intimis 5-8 longioribus rigidis rectis versus apicem fuscatis ; floribus lateralibus rubellis. 
On the Rio Grande, near Eagle Pass and southward : fl. April-June.— Plant 1-2 inches high ; spines 3-6 lines, 
flowers 7-10 lines, long. — Seems scarcely distinct from the well-known West Indian M. pusilla. 
B. Aculeis centralibus uno alterove uncinato. 
4.? M. parpatTa, E. in Wisl. Rep. : aculeis radialibus boar aps centrali singulo deorsum hamato ; floribus sub- 
centralibus ; seminibus tenuiter scrobiculatis. 
Cosiquiriachi, west of Chihuahua. This species has borne flower and fruit with me, and my notes [262] 
and my recollections indicate that they were central : hence the mark of doubt above, as to the proper position 
of this species here, where all the other closely allied forms belong. 
5. M. PHELLOSPERMA, E. in B. C. R. (M. tetrancistra, E. in part, Sill. Journ. Nov. 1852) : ovata, subsimplex ; 
tuberculis teretibus axilla lanata setigeris ; aculeis radiantibus 40-60 biseriatis, exterioribus brevioribus tenuioribus, 
centralibus 3-4 robustioribus atrofuscis inferiore s. pluribus hamatis; floribus lateralibus; bacca pyriformi chain 
; seminibus globosis rugosis nigris massa fusca suberosa majore arilliformi auctis 
From the Gila to the Eastern slope of the California mountains. — The name cntatually given had to be altered, 
because very rarely, if ever, are 4 hooked spines seen. the original description this and the next species were 
confounded. — Plant 2-4 inches high. Radial spines 4-6 lines, nite nes 5-9 lines long.— Apparently neat 
M. ancistroides, Lem., which, however, has the radial spines all homogeneous. 
6. M. Grawamt, E. 1. c. : subglobosa, simplex s. demum e basi ramosa ; tuberculis ovatis, axilla nudis ; aculeis 
radiantibus 20-30 uniseriatis, centrali sursum hamato fuscato, additis seepe 1-2 superioribus rectis ; floribus lateralibus 
rubicundis ; bacca ovata virescente ; seminibus minutis scrobiculatis nigris. 
Macisiins from El Paso so athwacd and westward to the Gila and Colorado, and up the latter river : fl. from 
_ June or July to August. — Plant 1-3 inches high ; hooks much longer than the radial spines, which are 3-6 lines long. 
Flowers below the top, nearly one inch in diameter. Berry and seed small, the latter only 0.4 line long. 
7. M. Wrieuttt, E. 1. ¢. : depresso-globosa, simplex ; tubereulis teretibus axilla nudis ; aculeis radiantibus sub- 
12 albidis ; centralibus sub-binis uncinatis hvnag vix longioribus ; floribus lateralibus (?) purpureis ; bacca subgloboso- 
ovata senjusenia seminibus scrobiculatis nigris. 
New Mexico, on the Pecos and near a Copper Mines. — Plants 14-3 inches in diameter. Spines 4-6 lines long. 
jctae fully one inch in diameter, bright purple, with narrow acuminate petals. Berry large and purple: seed 0.7 
e 
8. M. Goopricutr , Scheer: ovato-globosa, subsimplex ; tuberculis brevi-ovatis axilla lanata setigeris ; [263] 
aculeis radiantibus 11-15 ee centralibus 3-4 fusco-atris, inferiore paulo longiore deorsum uncinato ; 
floribus lateralibus. 
