Vw 
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19 
E. ncens, Zucc., in the number and arrangement of spines, is 
the simple type of our more northern species: it has on the oval ~ 
areole 4 stout cruciate central spines, 3 upper and 3 lower radial 
ones, and only 2 slender lateral spines. Seeds smooth. The flower 
seems to refer it, however, to the Hriocarpi. 
B. Homeacanthi. 
« Lepidocarpi. 
11. E. Emoryt, E. (in Emory’s Rep. 1848, and B. C. R.): gran- 
dis, ovatus; costis 13~20 obtusis tuberculatis ; areolis ovatis; acu- 
leis radialibus 7 — 8 subeequalibus robustis subangulatis annulatis paullo 
recurvatis rubellis 1-2 pollicaribus, centrali singulo recurvo s. sub- 
hamato paullo robustiore ; floribus magnis purpurascentibus. 
Lower Colorado, and principally in Sonora: fl. August and Sep- 
tember. Larger plants 24-3 feet high; spines usually 1-2, and, in 
a large specimen from Guaymas, nearly 3 inches long. Flowers 
about 3 inches long. Fruit unknown. 
12. E. viripescens, Nutt.: globosus, simplex seu raro ramosus ; 
costis 13-21; aculeis robustis compressis annulatis plus minus cur- 
vatis rubellis, radialibus 12—20 infimo breviore magis curvato ; cen- 
tralibus 4 angulatis robustioribus longioribus, infimo rectiore longi- 
ore ; floribus virescentibus ; bacca squamosa; seminibus minutissime 
scrobiculatis. 
San Diego, California. — Less than a foot in diameter, globose or 
flattened ; radial spines 5-10 lines long, 3 upper central ones a little 
longer, and lower central spine 12-18 lines long. Flower 14 inches 
long. 
13. E. cyninpracevs, E. in Sill. Jour. 1852: ovatus seu subcylin- 
dricus, plerumque e basi ramosus ; costis 21 vel pluribus ; aculeis ro- 
is compressis annulatis plus minus curvatis flexuosisve rubellis, 
radialibus sub — 12, aculeis adventitiis sub— 5 gracilioribus supra sepe 
adjectis, infimo hamato, centralibus 4 angulatis robustissimis cruciatis, 
superiore latiore sursum recto, inferiore decurvato; floribus flavis ; 
bacca squamosa. 
San Felipe, on the eastern slope of the Californian mountains : fl. 
in June. — The largest specimens seen were 3 feet high and one foot 
in diameter ; the branches or young single plants are globose. Ra- 
dial spines 1-2 inches long ; central spines 1~—1} lines broad, about 
2 inches long. Similar to the last, but well distinguished by the char- 
acters indicated. 
