7 
™* 
30 
mostly 6 lines, lower ones 6-10 lines, upper ones 8-15 lines long ; 
central spine, if present, 12— 15 lines long. 
§ 3. Pentalophi. 
23. C. Bertanprert, E. in B. C. R.: humilis, perviridis ; caule dif- 
fuso subtereti articulato ramosissimo ; tuberculis conicis 5 — 6-fariis ; 
aculeis 6-8 setaceis brevibus radiantibus albidis, centrali singulo 
multo longiore fusco; floribus magnis; petalis angustis recurvatis ; 
seminibus Ehcnceleia. 
On the Nueces, in Southern Texas: fl. May and June. — Stems 14 
-6 inches long, one inch thick; radial spines 4-5 lines long, cen- 
tral one 6 - 12 lines long, toward the base of the branches shorter. 
Flower 2-4 inches long. 
24. C. procumpens, E. in Pl. Lindh. 1850: humilis, perviridis ; 
caule diffuso subtereti 4-5 angulato articulato ramosissimo; aculeis 
4—6 radiantibus albidis, centrali nullo vel singulo paullo longiore ob- 
scuro ; floribus magnis ; petalis obovato-spathulatis patulis seu sub- 
recurvis ; seminibus tenuissime verrucosis. 
n the Rio Grande, below Matamoras: fl. May and June. — 
Similar to the last; but more slender, 6—8 lines in diameter ; radial 
spines 1-2 lines long, central one, if present, 2—3 lines long. Biawes 
above 3 inches long. 
§ 4. Graciles. 
25. C. rupERosus, Poselger: e radice tuberosa tenuissimus, teres, 
sursum incrassatus, demum articulatus, 8-costatus; aculeis minutis 
setaceis, 9 — 12 radiantibus, centrali singulo longiore sursum adpresso ; 
flore subterminali; seminibus minutis scrobiculatis. 
Between Laredo and Mier on the Rio Grande. Tuberous root }- 
1} inches thick. Stem above 4-8 lines thick; radial spines hardly 
1 line, central ones 2—3 lines long. Seed smaller than in any other 
Echinocereus, 0.4 line long, with the tubercles confluent. 
Subgen. 2. Evcrrevs. Caulis elongatus: fasciculi aculeorum ste- 
riles et florigeri similes: floris tubus elongatus, seepissime aculeolis _ 
capillaceis munitus: stigmata pallida: semina levia seu raro Poe 
gosa: embryo hamatus. 
26. C. Emory, E, in Sill. Journ. 1852: prostratus ; ile. = 
dentibus 15-costatis ; areolis confertis ; aculeis setaceis rigidis flavis, 
wre 
ie Sg 
Ss 
