CACTACE®. 23 
often exude a clear viscous liquid. I find them also in LZ. setispinus, EF. Emoryi, and numerous 
others, and they correspond, no doubt, with the glands in the groove of Mamillaria Scheerii 
and others, They appear with the flower, and are soft and fleshy at that time; afterwards 
they become hardened, of the texture of the spines themselves, and are persistent. Flowers 
24-34 inches long, externally greenish-yellow and red, internally yellow, with a red base. 
Fruit 1-2 inches long, coated with 25 or 40 or more scales, crowded with the remains of the 
flower, green and very acid, (Bigelow,) or insipid or sweetish when fully ripe (Parry ;) seed 
larger than in the last species 0.7-0.8 line in the longest diameter, deeply and distinctly 
pitted under the lens. 
7. E. Wisuzent, E. in Wisl. Rep. has been often collected by the different gentlemen attached 
to the commission between Dojia Ana and El Paso, and probably on the upper Gila, but not east- 
ward. Small specimens show only 13 ribs; full-grown ones usually have 21 or even as many 
as 24 ribs; areolew from 4 to 14 inch distant from one another ; on older plants closer than on 
half-grown ones ; 3 lower radial spines annulated ; stout, 8-20 lines long; 3 upper ones some- 
what slenderer, but also annulated, 14-2 inches long; in younger specimens these latter are 
wanting ; in old ones they move more towards the centre of the areola, and become surrounded 
by the upper bristly spines. Lateral bristle-spines 15-20, 14-2} inches long, often twisted, 
spreading horizontally. All the stouter and annulated spines are red with paler semitrans- 
parent points ; the weaker spines are yellowish-white. Ovary and fruit imbricately covered 
with 60 or 80 scales; fruit rather fleshy but not juicy, and soon hardening; seed oblique 
obovate 1.0-1.2 lines long; hilum small, broadly oval, subbasilar, or sometimes almost ventral ; 
surface of the seed finely reticulated under the lens; curved foliaceous cotyledons partly buried 
in the large albumen. (Tab. XXV—XXVI.) 
8. E. Lr Contest, E. in Pacif. R. Report: This fine species, which was discovered by Dr. Le 
Conte on the lower Gila, and found again by Dr. Bigelow higher up on the Colorado, has been 
observed frequently by Mm Schott in the western part of Sonora, where it flowers in August 
and Seftember. The flowers, which had not been seen by any other observer, may be described 
thus : 
Floribus plurimis subcentralibus; ovario squamis 30-50 sepaloideis reniformibus munito, 
sepalis tubi inferioribus 20-30 ovato-lanceolatis acutis ciliatis, superioribus 10-20 margine 
petaloideis obtusiusculis cuspidatis ; petalis 20-30 lineari-spathulatis obtusis inciso-fimbriatis 
mucronatis sulphureis ; tubo basi intus nudo ; stylo stamina superante ad medium in stigmata 
sub-14 linearia fasciculata diviso. (Tab. XXVII.) 
Mr. Schott’s specimens were 3-4 feet high, clavate and usually only one-third as thick. Dr. 
Bigelow’s specimens were not as slender. Flowers two inches in length, ‘‘ somewhat campanu- 
late, *’petals ‘‘lemon-yellow,”’ with a brownish tint along the midrib; tube naked for about 
one line above the base of the style. 
9. E. Emoryr, E. in Emory’s Rep., 1848: grandis, ovatus, glaucescens ; costis 13-21 rectis 
obliquisve obtusis tuberculatis ; areolis ovatis junioribus dense sordideque tomentosis ; aculeis 
8-9 subeequalibus robustis subangulatis annulatis paulo recurvis rubellis demum ftiscis apice 
sub pellucido corneis, radialibus 7 seu interdum adjecto (aculeo tenniore summo) 8, lateralibus 
sublongioribus, centrali singulo recurvo seu subhamato paullo robustiore ; floribus magnis pur- 
pureo-variegatis ; sepalis ovarii 25 reniformibus ciliolatis, superioribus spathulatis lanceolatis 
