CACTACEA OF WHIPPLE’S EXPEDITION. 159 
those Cactacee the fruit and flower of which are unknown to us, C. Zuniensis was collected Dec. 18, 1852, and the 
Mojave plant March 4, 1854. 
5. C. GONACANTHUS, sp. nov.: ovatus, simplex s. e basi parce ramosus, costis 7 interruptis, aie see 
orbiculatis distantibus, aculeis rolnuntia ea rectis s. varie curvatis flexuosisve, radialibus 8, inferio 
lateralibusque quadrangulatis flavidis basi et sepe apice obscuris, infimo breviore, summo elongato ene [34] 
multangulo obscuro erecto + ee nies similem multangulatem erecto- Spatentem subeequante, rarius 
excedente. (Plate V. figs. 2- 
On high sand-bluffs, ok with scattering cedars, near the natural well, about 40 miles west of Zuiii, near the 
th degree ; only seen in that locality. This species resembles, in its growth and the character of its species, 
U. triglochidiatus. It is simple, or has 2 or 3 heads, 3-5 inches high. e young areolz are very tomentose, 3-4 lines 
in diameter, and 6-10 lines distant from one another. The lower radial spine is 8-12, the others 10-15 lines long, 
pale or dirty yellow when young ; the upper radial spine is much stouter and longer than the others, and resensibles 
the central spine in shape, size, and color; in the few specimens at our disposal we find it from 13-2} inches long ; 
sometimes it assumes a more central place in the areole, the two upper lateral spines almost closing above it, — very 
rarely a small tenth spine appears above it. The central spine is 1}-2} inches long, 1 line in diameter, deeply 
furrowed, and 6- or 7-angled ; it is longer, equal to or rarely shorter, than the upper radial spine. Both those spines 
are almost black or mottled yellowish and black when young, and become, with all the others, gray when old. 
Collected Nov. 29, 1853. 
6. C. TRIGLOCHIDIATUS, Engelm. in Wisliz. Rep., sub Echinocero. In rocky cajions at the Rio Gallinas, east of 
the Pecos, and from there to the Sierra Madre, near Mount Taylor; not noticed farther west; always with few 
branches, or nearly simple. Major Brooks, the commandant of the fort at Santa Fé, informed me that the fruit of 
this species is edible, like many other allied species. Collected Sept. 28, 1853. 
7. C. HEXZDRUS, sp. nov.: ovatus, simplex seu e basi parce ramosus: costis 6 obtusiusculis subinterruptis, 
sulcis latis superficialibus, areolis pF US distantibus ; aculeis tenuioribus rectis rigidis subangulatis basi bulbosis, 
radialibus 5-7 e flavido rubellis, inferio Ageing » Summo sepe robustiore, centrali robustiore longiore acute-angulato 
juniore fuscato, szepe deficiente. (Plate V. fig. 
On sandy hills, under cedars, about 15 ce west of Zuii. Few heads, 4-6 inches high, 2-24 in diameter, with 
6 obtusish ribs, separated by wide and shallow grooves. Areole tomentose when young, only 14 line in diameter, 
6 or 8 lines distant. Spines slender but stiff, quite bulbous at base ; lower ones 5-10, upper ones 8-15 lines long ; 
mostly 6 radial spines, without a central one, the uppermost being the stoutest, longest, and darkest one, but 
smaller where a central spine is present. Ina single instance we found 7 radials, and in another one 2 compressed. 
central spines ; central spine usually 12-15 lines long. From the nearly allied, more southern Cereus paucispinus, 
Engelm. ined., this northwestern form is principally distinguished by the slender and angular spines. But as of 
neither of them we know the flower and fruit, we cannot form definite conclusions as to their specific distinction. 
These forms and C. triglochidiatus have a smaller number of ribs than any other species of this section. Collected 
Nov. 28, 1853. 
C. pHanicevs, Engelm. in Synop. Cact., EZ. coccineus; Engelm. in Wisliz. Rep., non De C. nec. Salm. 
po IV. fig. 1.) Found from the upper Pecos to Albuquerque and Santa Fé; also 5 degrees further west, on 
the San Francisco mountains. The specimens perfectly agree with the descdiption given in selena Report. 
The numerous heads, 2-3 inches high, about 2 inches in diameter, form dense cespitose masses, often 1 foot or more 
across. Areole 3-4 lines distant, large. Spines slender, almost setaceous, with very slightly bulbous ashe 8-12 
ial ones 3-6, 1-3 central ones 5-10 lines long ; upper radial spines much shorter than lower ones 
The following form seems very distinct, especially in its manner of growth ; but we have seen intermediat 
forms which seem to indicate the necessity of uniting both. Such questions, hewevilt: can only be solved satisfactorily 
by careful examination of flower and fruit, — which are as yet unknown, — and by extensive observation of these 
plants in their native wilds, 
9. SuBspectes C. CoNOIDEUS: ovatus, versus apicem erature parce e basi ramosus, costis [35] 
9-11 tuberculatis, areolis orbiculatis s. subovatus junioribus albo-tomentosis, aculeis basi bulbosis, radialibus 
10-12 tenuibus rigidis rectiusculis, summis brevibus, lateralibus inferioribusque longioribus, centralibus 4 (rare 3-5), 
superioribus radiales vix superantibus infimo multo longiore 4-angulato sepe complanato porrecto s. deflexo. 
(Plate IV. figs. 4-5.) 
rocky and mountainous localities on the Pecos. Cer. Roemeri, Muhlenpf., not Engelm., from the San Saba, in 
Texas, seems to agree well with our plant, but the description is not full enough to decide about the identity. 
Heads 3-4 inches high, single or few, of unequal height together; remarkable on account of their conical or 
acutish shape uniformly observed, Areole 4-6 lines distant. Spines white or straw-colored, larger central one often 
