130 
3. BE. uncinatus Hopf., var. WRIGHT Eng. Glaucescent, ovate, 7.5 to 15 em, high: 
ribs 13. interrupted: tubercles grooved to the base: radial spines 8, the 3 lower gray- 
ish-brown, hooked, and about 2.5 cm, long, the remaining 5 a little longer and straight; 
central one angled, flexuous, hooked, elongated, erect, straw-color with a grayish- 
brown tip, 5 to 10 cm. long: flowers brownish-purple, 2.5 to 3.5 cm. long: berry 
fleshy.—From Eagle Pass to El Paso. 
4. BE. setispinus Eng. ’ Globose, ovate or subeylindrical: ribs 18, compressed and 
acutely angled: tubercles with very short grooves: radial spines 1U to 16, setaceous; 
the usually single central one more robust, terete, grayish-brown, hooked or flexu- 
ous curled: flowers large, yellow, scarlet within: berry scarlet.—From the Brazos to 
the Rio Grande and west to the San Pedro. Var. SETACEUS Eng. is a smaller form, 
with more spines, and the 1 to 3 central ones more slender and scarcely hooked. 
>. E. sinuatus Dietr. Globose: ribs 13, compressed, acutish, interrupted: radial 
spines setaceous, the 3 upper and 3 lower straightish and grayish-brown, the? to6 lat- 
erals slenderer, white and flexuous (very rarely hooked); central ones 4, stouter, the 
3 upper straight and variegated-purple, the lower flattened, elongated, flexuous or 
hovked, straw-colored: flowers large, yellow: berry ovate.—Along the Pecus, San 
Pedro, and Rio Grande, at least to Eagle Pass, probably further east. Intermediate be- 
tween the preceding species and the following. Distinguished from LZ. setispinus by 
its larger size, thicker ribs, flattened central spine, and shining finely dotted seeds ; 
from E. longihamatus by the more compressed and less strongly tuberculated ribs, the 
sinaller number of stigmas (8 to 12), smaller fruit, and much more finely dotted 
seeds. 
6. BE. longihamatus Gal. Subglobose, 15 to 60 em. high, the larger ones ovate: 
ribs 13 to 17, obtuse, tuberculate-interrupted: tubercles shortly grooved: radial spines 
rigid, subterete, 2.5 to 3.5 cm. long, the upper and lower in threes, the 2 to 6 laterals 
longer; central 4 stout, angled and ringed, 3.5 to 16.5 cm. long, the lowest of which 
is hooked, straight, or tflexuous; 2 to 4 additional upper ones fascicled with the radi- 
als: flowers large, 6.5 to 8.5 cm. long, yellow: stigmas 15 to 18: berry oblong, red 
when ripe.—Along the Rio Grande west to the Limpia, and especially in the region 
of the ‘Great Bend.” Easily recognized by its large heads and very long hooked 
spines, and known as “Turk’s head,” the fruit being considered delicious. Ex- 
ceedingly variable in the size of its spines. Var. GRACILISPINUS Eng. has 16 to 20 
more slender spines, radials 12 to 14, centrals 4 to 8, the lowest elongated and hooked. 
Var. BREVISPINUS Eng. has more slender (8 to 11) radial spines and the 4 centrals 
terete and (as well as the lower hooked one) scarcely exceeding the radials. 
7. BE. Wislizeni Eng. Globose-ovate, very large, 6 to 12 dm. high: radial spines 
2.5 to 5 cm. long, upper and lower ones in sixes, stout, straight, or curved, laterals 14 
to 20 (often with shorter fascicled ones in addition), slender, elongated and flexuous; 
central ones 4, 3.5 to 7.5 em. long, stout, angled, ringed, reddish, the 3 upper straight, 
the lower hooked downward and channeled: flowers yellow, 6.5 cm, long: berry 
On the upper Rio Grande, from El] Paso upwards. 
& E. Parryi Eng. Simple, globose or depressed, the largest from 20 to 30 cm. 
high: ribs 13, acute: spines stout, angled, ringed, white ; radials 8 to 11, straight or 
a little curved, the upper wore slender, the lowest one wanting; the 4 central ones a 
little longer and stouter, the lowest longer and decurved: dry berry densely woolly.— 
The eastern limit seems to be EF] Paso. 
9, B. horizonthalonius Lem., var. CENTRISPINUS Eng. Glaucous, depressed or 
at length ovate, 5 to 20 cm. high: ribs 8, very obtuse and very broad: areole orbic- 
ular with truncate base: spines nearly equal, 2 to 3.5 em. long, stout, flattened, 
ringed, recurved, reddish at length gray; radials 5 to 7, the upper weaker, the low- 
est one wanting; a solitary stouter decurved central one: ilowers purple, densely 
woolly, 6.5 em, long: dry berry woolly.—From the Pecos to E] Paso. Dr. Havard 
says that this species, under the name of ‘“yisagre,” is sliced, candied in Mexican 
sugar, and kept as confections, 
ovate. 
