38 UNITED STATES AND MEXICAN BOUNDARY. 
to which it seems to be allied, but either simple or with few branches from near the base; ribs 
few, grooves wide and shallow; areolz 8-10 lines apart; spines few and dark colored, 9-15 
lines long, upper one often shorter, and central spine when present 15-20 lines long; flower 
and fruit unknown; the seed sent by Mr. Wright is similar to that of C. polyacanthus, 0.7-0.8 
line long, oblique, with slightly confluent irregular tubercles, and a large and wide hilum.—This 
species on the Pecos seems to take the place of the more western C. polyacanthus, which farther 
east is represented by C. Remeri, and farther west by C. pheniceus; from all these it is distin- 
guished by the few ribs and the few dark spines. 
16. C. Bernanpreri (sp. nov.): humilis, perviridis; caule subtereti articulato-ramosissimo ; 
tuberculis conicis distinctis 5-6-fariis; areolis parvis orbiculatis; aculeis tenuibus subsetaceis, 
6-8 brevibus radiantibus albidis, 1 centrali plerumque multo longiore fuscato; floribus latera- 
libus magnis purpureis; ovarii puvillis sub-20 breviter albo-tomentosis aculeolos capillaceos 
basi bulbosos 8-10 longiores albidos et 1-2 robustiores fuscos gerentibus ; sepalis tubi exteri- 
oribus 8-10 aculeoliferis, superioribus 13-16 oblongo-linearibus acuminatis seu cuspidatis ; 
petalis 14-18 late linearibus seu lineari-oblanceolatis elongatis fere loricatis mucronatis apice 
denticulatis patulis demum reflexis ; stigmatibus 7-10 viridibus; bacca ovata viridi subsicca ; 
seminibus parvis obovato-subglobosis tuberculatis, hilo circulari—(Tab. LVIIT.) 
On the Nueces, Berlandier. Frequently in cultivation under the wrong names of C. repens or 
C. Deppii, doubtless introduced from southern Texas: fl. May and June.—A spreading and 
procumbent plant, with erect branches contracted at base, and thereby articulated, 14-6 inches 
long, }-1 inch thick, either terete with distinct spirally disposed tubercles, or the tubercles 
arranged in 5 or 6 ribs. Areole 4-6 lines apart; radial spines bristle-like, weaker than those 
of the next species, 4-5 lines long, sometimes a stouter and darker one at the upper end of the 
areola ; central spine yellowish-brown, shorter on the lower part of each branch, longer towards 
the top, from 5-6 to 10-13 lines in length. Flower 3-4 inches long, or when fully open 
spreading almost 4 inches and only 2 inches in height; bristles of the tube below 2-3 lines, 
upwards 4-6 lines long, the tomentum white and short ; petals long and narrow, 3-4 or rarely 
5 lines wide, bright rose-purple; filaments short, pale rose-colored ; stigmata long and suberect ; 
berry about 9 lines long, densely covered with the elongated mottled hair-like spines ; seeds 0.5 
line long, strongly and distinctly tuberculated, contracted at base. Nearly allied to 0. pentalo- 
phus, DC., which, however, is an erect plant.—Named for Dr. J. L. Berlandier, who made 
known this as well as many other plants of the lower Rio Grande. 
17. C. procumbens, E. in Pl. Lindh. 1850: humilis, perviridis; caule subtereti seu 4-5 
angulato articulato-ramosissimo ; tuberculis distinctis spiralibus seu 4-5 fariis ; areolis parvis- 
orbiculatis ; aculeis rigidis brevibus albidis apice fuscis, 4-6 radiantibus, centrali nullo seu 
singulo paullo longiore obscuriore ; floribus sub apice ramorum lateralibus magnis ; ovarii pul- 
villis sub 25 albido-villosis aculeolos rigidos 6-9 breves variegatos gerentibus; sepalis tubi exte- 
rioribus 12-15 aculeoliferis, superioribus. sub-15 lineari-lanceolatis acuminatis ; petalis 18-20 
lineari-spathulatis acutis seu obtusis, integris seu plerumque eroso-dentatis patulis demum re- 
curvis violaceis basi flavidis ; stigmatibus 10-14 stamina flavicantia Superantibus ; bacca ovata 
viridi irregulariter dehiscente; seminibus parvulis lenticularibus basi hilo oblongo truncatis 
verruculosis. (Tab. LXIX, fig. 1-11.) 
On the Rio Grande below Matamoras: 41. May and June.—Similar in habit to the last, but 
more slender ; branches 4 to 3 or 4 inches in length, 6-8 lines in diameter ; tubercles 4-5 lines 
