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1 
CACTACER. 35 
9. SuB-sPECIES C. CONOIDEUS: ovatus versus apicem conoideo-acutatus parce e basi ramosus, 
costis 9-11 tuberculatis, areolis orbiculatis s. subovatis junioribus albo-tomentosis, aculeis basi 
bulbosis, radialibus 10-12 tenuibus rigidis rectiusculis, summis brevibus, lateralibus inferiori- 
busque longioribus, centralibus 4, (rare 3-5,) superioribus radiales vix superantibus infimo 
multo longoire 4-angulato sepe complanato porrecto s. deflexo. (Plate 4, fig. 4-5.) . 
On rocky and mountainous localities on the Pecos, Cer. Roemeri, Muhlenpf., not Englm., 
from the San Saba, in Texas, seems to agree well with our plant, but the description is not full 
enough to decide about their identity. 
Heads 3. 4 inches high, single or few, of unequal height together; remarkable on account of 
their conical or acutish shape uniformly observed. Areol 4-6 lines distant; spines white or 
straw colored, larger central one often dusky when young; radial spines slightly bulbous at 
base; upper ones 2-5 lines, lateral ones 6-15 lines long, and lower ones hardly a little shorter ; 
central spines very bulbous; upper ones not much longer than the lower radial ones; lower cen- 
tral spine sharply quadrangular, mostly compressed, often deflexed and curved, 1-3 inches long. 
On the San Francisco mountains, a specimen was collected with 11 ribs, 8-9 radial spines, 
(4-12 lines long,) the uppermost shortest, and 3-4 reddish-gray central spines, very bulbous at 
base, the lowest longest (12-20 lines long) and angular. In superficial appearance, this plant 
resembles C. Mojavensis, but it must be referred here, and seems to indicate a range of this 
form through seven degrees of longitude. 
A specimen from Anton Chico, on the Pecos, seems to unite C. conoideus with C. pheniceus. 
Areole more distant than the latter; spines longer; 3 central spines, lower one somewhat 
curved and angular. Collected September 28 and December 18, 1853. 
10. C. ENGELMANNI, Parry, var. and VARIEGATUS: ovato-cylindricus simplex s. parce e basi 
ramosus 12-costatus, areolis orbiculatis approximatis, aculeis exterioribus sub-13 gracilibus. 
rigidis albis apice sphacelatis adpressis lateralibus longioribus, summis deficientibus; aculeis 
centralibus 4 cruciatis (raro 5) plus minus curvatis infimo elongato angulato albo decurvato, 
ceteris brevioribus teretiusculis nigris corneisque variegatis; floribus ex axillis areolarum 
vetustiorum inferiorum ; bacca ovata sicca pulvillis numerosis setas tenues albidas plurimas 
gerentibus stipata; seminibus obovato-subglobosis compressis rugoso-tuberculatis opacis, (Plate 
V, fig. 4-7.) 
Var. 8? CHRYSOCENTRUS, cylindricus parce e basi ramosus 10-12-costatus, areolis magnis; 
aculeis radialibus 12-14 albis superioribus setaceis brevibus, inferioribus longioribus robusti- 
oribus angulatis compressis rectis s. paulo incurvis, centralibus 4, superioribus rigidis robustis 
basi bulbosis angulatis rectiusculis elongatis, erectis vitellinis, وی ای‎ angulato compresso albo 
recto paulo breviore deflexo; floribus ex inferiore plantee parte; bacca ovata pulvillis paucis 
aculeos setosos longiores albos gerentibus stipata. (Plate V, fig. 8-10.) 
On the Cactus mountains and at the head of Williams river, degrees 1134 longitude. Heads 
4-9 inches high, single or few, not more than 4-6 together; areola 2-4 lines distant ; radial 
spines 3—5 lines long, upper central spines 3 or sometimes 4, black on the upper, and horn- 
colored on the lower side and towards the point, 1-13 inches long, lower central white, 14-2 
inches long. Position of fruit on lower half of plant much like that of C. chloranthus, E. ined , 
only 6-8 lines long, crowned with the remains of the (red?) flower. Seed 0.6-0.7 line long 
compressed, tubercles sometimes irregularly confluent and leaving pits between the ridges, 
lower part of the back with a smooth carina, hilum oval. 
Var. f CHRYSOCENTRUS, named after its deep golden-yellow spines, is, probably, not specifically 
distinct, though the straighter, stouter, and less divergent spines give it a very peculiar appear- 
ance. It was found where C. variegatus disappears on the lower part of Williams’ river, and 
was seen from there to the Mojave creek, and up that stream to the Sierra Nevada. Stems 5-10 
inches high, areola 6-7 lines distant, young ones 24-3 lines in diameter. Upper radial spines 
3-5, lateral 5-7, and lower ones 7-12 lines long; the latter flattened and often curved up. 
