12 
4 
X ajaopjr&jr/. a 
0(2^./. \ 
a C-^ly - / /. v i 
th 
long. Flower 2J-2J inches long, and of same diameter. Seeds a 
line long. 
§3 . Rubriflor*. 
*' Sepalis integerrimis. 
24. M. conoidea, DC. (M. strobiliformis, E. in Wisl. Rep. non 
Scheer) : found only south of the Rio Grande. 
# * Sepalis jimbriatis. 
25. ? M. Pottsii, Scheer: cylindrica, subramosa ; tuberculis ovatis 
obtusis levissime sulcatis, axillis sublanuginosis ; aculeis radialibus 
numerosissimis gracilibus albis, centralibus 6 - 12 validioribus expan- 
sis basi nodulosis apice sphacelatis ; floribus magnis e viridi rubellis; 
baccis roseis. 
Texas, on the Rio Grande, below Laredo, and from there to Chi¬ 
huahua.— I have not seen this plant; the description, is taken from 
Salm and Poselger. 
26. M. tuberculosa, E. in B. C. R.: ovata s. ovato^cylindrica, sim¬ 
plex s. ad basin parce prolifera; tuberculis e. basi rhomboidea ovatis 
abbreviatis obtusis profunde sulcatis demum suberosis persistentibus 
confertis, axillis villosissimis; aculeis exterioribus 20-30 rigidis albi- 
dis, interioribus' 5-9 robustioribus caesio-purpureis sphacelatis, su- 
perioribus longioribus erectis, infimo breviore robusto porrecto s. 
deflexo; floribus in vertice densissime tomentoso centralibus pollicari- 
bus dilute roseis; baccis elongato-ovatis rubris; seminibus minimis 
scrobiculatis. 
On the mountains near El Paso, and eastward.: fl. May and June. 
Plant 2-5 inches high; tubercles 2£ - 3 lines long, dry and hard, not 
fleshy unless very young, nor shrivelling when old, but losing the 
spines and covering the lower part of the plant like corky protuber¬ 
ances. Outer spines usually 2-4, rarely 5 or 6, lines long; interior 
spines 4-9 lines long; those of the upper tubercles forming a tuft of 
grayish-purple color on top of the plant. Flowers very pale purple, one 
inch in diameter* Berry red, three fourths of an inch long, one fourth 
Of an inch thick, crowned with the remains of the flower. Seeds short, 
thick, about half a line long. — The short, corky tubercles, with 
very deep grooves, and very woolly when young, together with the 
long red fruit, distinguish our species from all the allied forms. 
27. M. dasyacantha, E. in B. C. R. : simplex, subglobosa ; tuber- 
0 1 2 3 4 5 6 7 8 9 10 Missouri 
BOTANICAL 
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