194 CACTACEA OF THE BOUNDARY. 
2-6 brevioribus setaceis, lateralibus — inferioribus purpureis demum fuscis, superioribus plerumque albidis, 
rarius omnibus i nee aculeis centralibus nullis seu rare singulo robusto recto vel subinde curvato apice seu toto 
purpureo-fu sco, rarissime altero propia superiore adjecto ; floribus versus apicem lateralibus e flavo virescentibus ; 
ovario tuboque saitien 25-30 (aculeolis infra 8-12; supra 3-5 albidis seu rubellis munitos) gerentibus ; sepalig 
interioribus lineari-oblongis 10-15 virescentibus fuscatis ; petalis 12-15 lineari-oblongis acutiusculis ; : baccis ellipticis 
virescentibus ; seminibns | parvis obovato-subglobosis tuberculatis, hilo basilari suborbiculato, (Plate XXXVI.) 
On the Limpia, and thence toward El Paso; Wright. Flowers in May. — This is a taller form a the original 
species, described in Wislizenus’s Report, from the northern parts of New Mexico, with stouter spines and acute petals, 
A handsome plant, not so much on account of the inconspicuous flowers as from the beauty of the purple and white 
spines, which are particularly bright when first developed in spring, and look like flowers. Stems 3-6 and sometimes 
-even 8 inches high, 1-2 inches in diameter. Spines usually 3-5 or nearly 6 lines long; central spines, if present, 
6-10 lines in length, — more common on the smaller northern var. a., rarely present in the southern form. In a single 
specimen collécted by Dr. Bigelow on the upper Pecos I find on some of the areole all or most of the spines purple, 
and the central spine sometimes curved upward, sometimes white, with a purple tip, or purple to the base. Flower 
1 inch or less below the top, 1-1} inch long, not quite as wide even when fully open; petals 2-3 lines wide. Fruit 
5-6 lines long, crowned with the withered corolla, as in all Echinoceret. In some rather dry fruits the corolla is quite 
persistent ; in the more juicy ones it, as well as the spines on the fruit, are deciduous when the fruit is quite ripe. 
Seed 0.5-0.6 line long, tuberculated, but the tubercles somewhat confluent, very slightly in the northern form, a little 
more in ours, so as to show pits between the warts ; seed somewhat compressed, and keeled on the back. 
2. C. CHLORANTHUS, sp. noy.: cylindricus, simplex seu e basi parce ramosus; costis 13-18 cubinterruptis; 
areolis confertis orbiculato-ovatis ; astilats 12-20 laxius radiantibus setiformibus albis, lateralibus longioribus apice 
sepe purpurascentibus, adjectis supra aculeolis 5-10 brevioribus setaceis; aculeis centralibus 3-5 quorum 2 superiores 
breviores plerumque purpurascentes sursum divergentes, 1-3 inferiores longiores divergentes deflexique albidi; floribus 
in caule medio vel inferiore lateralibus virescentibus extus rufis; ovario pulvillos sub-21 (aculeolis 14-18 setaceis 
munitos) gerente; sepalis tubi sub-18 pr i OO inferioribus aculeolos axillares 3-5 gerentibus; petalis 
15-18 lineari-oblongis mucronatis; filamentis styloque sulphureis; stigmatibus 8-11 viridibus adpressis ; bacca sub- 
globosa aculeolata ; ‘seninibus parvolis ta penne igrinaee neh (Tab. XXXVII.-XX I.) 
Common on stony hills and mountain sides r El Paso; Wright, Bigelow. Flowers April. — Stems 
3-9 or 10 inches high, 13-2 inches in diameter; pate 3 or 4 lines apart, not so much elongated as in the last s species, 
and often almost orbicular. Radial spines slender, patulous, not strictly radiating, pectinate or adpressed to the plant; 
lower lateral ones the longest (as in all these Pectinati), 4-5 lines long, inferior ones shorter, upper ones shortest. 
No central spines are present in young plants, next 1-3 appear, and well-developed flower-bearing plants have [30] 
always 5; the upper darker and shorter ones are about 6 lines, the lower ones 9-12 or even 15 lines long ; the 
lowest one is the longest, and regularly deflexed, so that the plant, seen from above, shows as many rays formed by 
these spines as there are ribs. sare scape white, the lower lateral and central ones often tipped with purple, upper 
central ones entirely purple; a spec been sent with all the spines almost entirely white. Flowers yellowish- 
—_ always low down on the se ial below the middle, often in the lower third), forming a circle around the 
; flowers an inch long, funnel-shaped, not fully opening even in bright sunshine. Mr. Wright — to whose careful 
eoaadinn. and full notes I am indebted for many data — found the stamina about 400 in number and half as long 
as the petals ; stigmata green, much exsert. Fruit half an inch or less in thickness, crowned with the conic remains 0 
the flower. Seed 0.5 or 0.6 line in diameter, orbicular, compressed and carinate; tubercles confluent, so as to form 
pits ; hilum linear-oblong or oval, basilar. Name from the color of the flowers. 
3. C. pasyacanruus, E. in Wisliz. Rep.: ovatus seu subcylindricus, simplex seu e basi parce ramosus, sub- 
cxspitosus ; costis 15-21 rectis seu obliquis subinterruptis ; areolis confertis ovatis; aculeis 20-30 rectis rigidis patulis 
stellatim undique porrectis intertextis cinereis apice seepe rubellis vel adustis, in plantis debilioribus albidis, exteriori- 
bus 16-24 quorum laterales longiores, superiores breves graciles, inferiores intermedii, interioribus 3-8 robustioribus ; 
floribus sub vertice ipso subterminalibus magnis flavis; ovarii pulvillis 35-45 villosis aculeolos 15-18 albidos seu apice 
rubellos gerentibus; sepalis tubi late campanulati inferioribus 20-30 aculeoliferis, superioribus 15-20 petaloideis 
oblanceolatis acutis seu = petalis 15-25 spathulaté-oblanceolatis mucronatis seu interioribus plerumque 
obtusis muticis ; stamini numerosissimis ; stylo exserto subclavato ; stigmatibus 13-18 viridibus erectis ; bacca 
magna conga auiiien: ; seminibus subeloboils tuberculatis. (Tab. XXXIX., XL., XLI., fig. 1-2.) 
About El and down to the cafion of the Rio Grande ; common on rocky hills and the edge of gravelly 
range of this species seems quite limited, as it has not been sent from any other locality but the on 
Flowers in April and May ; fruit ripe in June. ~— Stems 5-12 inches high, 2 or 3 or even 4 inches in diameter, 
