CACTACEEH OF THE BOUNDARY. 191 
high (above ground) and 6-7 inches in diameter. They are usually simple, but sometimes, “only when are or 
burned over by fires,” they branch from the base, forming in favorable situations quite a pile of prickly balls. 
young specimen brought home by Dr. Parry, about 2 inches in diameter, with 8 ribs, I find only 9 radial faa 
recurved spines, the lowest and most curved one 4-6 lines long, the 2 upper ones 6-8 lines and the 6 lateral ones 
8-9 Jines long ; the 4 central spines are much stouter, more distinctly angular, se aes and annulated, 10-16 lines 
long, the uppermost one more curved, the lowest one almost straight. Schott, in his notes made on the spot, states the 
number of radial spines to be 13, much shorter than the central spines ; Paisy describes the radial spines of the adult 
plant as 18-20, not more than 6-9 lines long, while the longest central spine is about 18 lines long. Flowers disposed 
in a circle around the vertex, greenish, 14 inch long, 1} in diameter ; tube inside naked at base ; stamina short; style 
about 1 inch long, more deeply divided than in other species. Fruit 8-10 lines long, of the shape and taste of a 
gooseberry ; bluish-green, in Parry’s specimens with 25-30, in Schott’s with 35-40 scales. Seed 0.8 line long, [25] 
very minutely but distinctly pitted. 
11. E. cyninpracevs, E. in Sillim. Journ. 1852, sub E. viridescente: ovatus seu ovato-cylindricus, simplex seu 
plerumque e basi ramosus ; vertice breviter tomentello ; costis 21 seu pluribus rectis seu obliqnis obtuse tuberculatis ; 
areolis ovatis ; aculeis robustis compressis annulatis plus minus curvatis fiexuosisve rubellis apice corneis, radialibus 
aculeis gracilioribus sub-5 summe areole insertis, lateralibus tenuioribus, infimo robusto breviori 
decurvato-hamato ; aculeis centralibus 4 robustissimis 4-angulatis compressis cruciatis, superiore latiore sursum su 
erecto, inferiore Pane curvato ; flore me bacea subglobosa carnosa pallide virescente sepalis semilunatis fimbriatis 
stipata, floris rudimentis coronata. (Tab. 
ocky ravines near San Felipe, on = eastern slope of the California mountains, in latitude 33°, Dr, Parry ; 
also seen by Dr. Le Conte. — Young plants globose, older ones ovate and cylindrical ; the former have 13 ribs, the 
— from 20 to 27. The largest specimens seen were 3 feet high and 1 foot in diameter. They often branch out at 
hich by Dr. is ascribed to the action of fire crippling the original stem. Ribs somewhat interruptedly 
ebenaduele tubercles flattened horizontally. In the youngest specimens are found already 7 radial and 4 central 
spines, the lower radial spine much the stoutest and quite curved ; the 3 upper central spines almost radiating, the 
lower one erect, all stout, ese: 1-1} inch long. In older specimens (the one before me is globose, 4 inches in Jinshan: 
with 13 ribs) the areole are 6-8 lines long, 33-4 lines wide ; the radial spines (together with the 3-5 slender 
additional ones on the upper > sige of the areola) 1 12-18, — the lowest one is stout and much hooked and the shortest of 
all, the others are from 13-2 inches long. The 4 central spines are 1-1} line broad and about 2 inches long. In the 
most fully developed ae of spines the 3 ee radial spines are pushed into the inner circle, so that then the 
number of centrals appears to be 7, The upper central spine is the broadest one, almost straight and erect ; the lower 
one has mostly a strong ieee curve. The fruit is described by Dr. Parry as a green, juicy berry, aioad an inch 
in diameter, in the axils of the uppermost spines, ae yellow remains of the corolla; seed black, “intermediate in 
size between that of Z. viridescens and E, Wislizent. 
I was inclined to consider this plant as a form of E. viridescens, but Dr. Parry, who has seen numerous specimens 
of it, is satisfied that it is quite a distinct species. It is characterized by the cylindrical growth, more obtuse ribs, 
more numerous, longer, and more curved spines, of which the upper, not the lower one, is the largest and broadest. 
It is quite remarkable that we have three so similar species on both sides of the California mountains as the two just 
mentioned and E. polycephulus, — the western one globose, the two eastern ones cylindrical and many-headed ; these 
entirely dissimilar in flower and fruit, and one of the eastern and the western one so much alike. It is an interesting 
observation that similar but quite distinct species occur on both sides of the mountains, not only in this genus, 
also in Mamillaria and Opuntia, and that no species crosses that mountain range. 
12, E. potycerHaLus, Engelmann and Bigelow, in Pacific Railroad Report ; found by Mr. Schott on the Gila 
and lower Colorado. He notes the cespitose growth, and the heads 5-8 inches in diameter, 10-15 inches long, with 
10-15 ribs. Dr. Bigelow’s specimens from the Mojave River were much larger ; but the fruit sent by Mr. Schott 
leaves no doubt sboat their identity. 
13. E. Parry, sp. nov.: simplex, globosus seu depressus ; costis 13 acutis aI Ems is, seepe 
obliquis ; areolis ochiculatic, seu areola florifera contigua minore addita ovatis albo-tomentosis ; aculeis omnibus [26] 
robustis annulatis plus minus compressis albidis, radialibus 8-11 rectis seu paulo ante pails oribus debiliori- 
bus, lateralibus robustioribus, infimo deficiente ; aculeis centralibus 4 validioribus, 3 rectiusculis sursum versis, infimo 
valido longiore curvato deflexo ; bacca sicca oblonga squamis aristatis spinescentibus tomentoque denso albo vestita 
floris — coronata, (Tab. XXXII. fig. 6-7.) 
m southwest of El Paso toward Lake Guzman, over an area of sixty or eighty miles in extent; found 
by Parry with old fruit in January, and by Wright and Bigelow without flower or fruit in April. —I have before me 
only a few bunches of spines ; the other data are all obtained from Dr. Parry’s notes. The plant is 8 or 12 inches 
high by 10 or 15 inches in diameter, always simple ; the ribs interrupted ; upper tubercles less distinct, flattened side- 
