=~ 
Plante Lindheimeriane. 201 
ECHINOCACTUS. 
The specimens described in the account of Lindheimer’s 
plants, under the name of E. setispinus were the most northern 
and rather diminutive forms of this beautiful species; the 
flowers were incorrectly described from a withered bud ad- 
hering to one of the specimens. Numerous plants have since 
been sent by Lindheimer from San Antonio, and by the St. 
Louis Volunteers from the lower Rio Grande. : 
Ecutnocactus sETISPINUS (Englm. l. c.): ovato-subglobo- 
sus s. oblongo-cylindraceus; costis 13 acutis sepe undulatis 
s. subinterruptis plus minus obliquis ; areolis remotis, juniori- 
bus flavido- s. albido-tomentosis ; aculeis radiantibus setifor- 
mibus 10— 16, summis longioribus imisque flavicanti-fuscis, 
lateralibus albidis, centrali subsingulo robustiori fusco flex- 
uoso s. apice uncinato; floribus solitariis nudis infundibuli- 
formibus, tubo glaberrimo ; sepalis inferioribus brevioribus 
obtusis s. cuspidatis 25—40, superioribus elongatis lanceolatis 
15-25, omnibus margine membranaceis basi auriculato-cor- 
datis tenuiter ciliatis; petalis 20—30 (cum basi miniata 
flavis) oblanceolatis acutis integris s. denticulatis; stylo 
supra stamina rubella longe exserto; stigmatibus 5 —8 sulphu- 
reis recurvis s. erectis; bacca pulposa globosa rubra rudi- 
mentis sepalorum infimorum membranaceis stipata. 
œ. HAMATUS : major, subovatus; aculeis radialibus 10 — 12, 
centrali robustiori hamato. E. hamatus, Muhlenpf. E. Muh- 
enplfordtis, Fen. 
8. SETACEUS: minor, subglobosus ; aculeis radialibus 14 — 16, 
centralibus 1 —3 setiformibus flexuosis. E. setispinus, Engelm. 
l. c. — Texas, from the Colorado to the Rio Grande. Flow- 
ers from April or May to October, and therefore, on account 
of its beautiful flower, one of the most valuable species for 
cultivation. — Plant 2—4 inches in diameter, and 11—6 or 8 
inches high, flowering when quite small, simple or (in culti- 
vation at least) sometimes proliferous at base. Var. « is the 
larger southern form, with fewer, stouter, and longer spines 
(radial 6 — 16 lines, central 12-16 lines long). Var. £ is the 
