26 THE CACTACEAE. 
that it has not been re-collected. It was collected at Escondido Springs, near the 
Pecos, Texas. Schott points out how it differs from Echinocereus caespitosus in the follow- 
ing words: 
“In C. caespitosus the flower-buds are clothed with a dense grayish wool and bear beautiful 
flowers 2 inches in diameter and 2 inches in length. In Cereus concolor the flower-buds are perfectly 
naked, small, campanulate blossoms with yellowish sanguineus petals perfectly like the spines in 
color, 0.5 inches in diameter and 0.8 inches in length.” 
Echinopsis reichenbachiana Pfeiffer (Forster, Handb. Cact. 365. 1846) was used only 
as a synonym. . . 
Echtnocereus pectinatus castaneus (Monatsschr. Kakteenk. 1: 144. 1891), unpublished, 
doubtless belongs here. 
Illustrations: Gray, First Lessons Bot. 96; Gray, Struct. Bot. ed. 5. 421. f. 838; ed. 
6. 170. f. 317, as Mammillaria caespitosa*; West Amer. Sci. 7: 238; Dict. Gard. Nicholson 
4: 511. f. 6; Suppl. 217. f. 228; Cact. Mex. Bound. pl. 43, 44; Deutsche GArt. Zeit. 5: 209; 
Watson, Cact. Cult. f. 19; Curtis’s Bot. Mag. 109: pl. 6669; Gartenflora 29: 52, as Cereus 
caespitosus; Gartenflora 30: 413; Garten-Zeitung 3: 16. f. 7; Engler and Prantl, Pflanz- 
enfam. 3”: f. 56, F; Forster, Handb. Cact. ed. 2. f. 105, 138; Cact. Journ. 1: 107, 135; 
Britton-and Brown, Illustr. Fl. 2: 461. f. 2523; ed. 2. 2: 559. f. 2982; Riimpler, Sukkulenten 
140. f. 75; Ann. Rep. Smiths. Inst. 1908: pl. 4, f. 6, as Echinocereus caespitosus; Monats- 
schr. Kakteenk. 15: 171; Floralia 42: 369, as Echinocereus pectinatus caes pitosus. 
Figure 26 is copied from plate 43 of the Mexican Boundary Survey, above cited; 
figure 25 is from a photograph furnished by Robert Runyon of a plant collected near 
Saltillo, Mexico. 
34. Echinocereus baileyi Rose, Contr. U.S. Nat. Herb. 12: 403. 1909. 
Plant body cylindric, about 10 cm. high; ribs 15, straight or sometimes spiral: areoles elongated 
separated from the adjacent ones by a space of about ther own length; radial spines at first white, 
when mature brownish or yellowish, about 16, somewhat spreading, those at the top and base of the 
areole sonal central spines none; areoles when young clothed with dense white wool, this nearly 
oF uit . menting in age; flowers from the youngest growth appearing terminal; perianth widely 
P ree rae ep road or more; inner segments light purple, oblong to spatulate-oblong, the broad 
Pex to or erose, the terminal teeth tapering into a slender awn; filaments short yellow; style 
stout, longer than the filaments: stigma-lobes 10, obtuse; areoles of the ovary bearing 10 to 12 
pines whitish or the central ones brownish; 
not so closely set, bearing spines subtended by 
This very interesting species was collected in August 1906 by Mr. Vernon Bailey, for 
ins, Oklahoma. The following August it 
known but, while restudying the genus 
Oklahoma flowered in July 1908. We have 
. since endeavor i 
without success until we were readin 4, to collect specimens, but 
g the second proof. On Major E. A. Goldman’s return 
* On inquiring of Mi —_ 
g of Miss M i 
June 15, 1921: ary A. Day regarding these references we received the following reply under date of 
y Dr. Gray in his Structural Botany, edition 5, 18 58, appears one year 
ts een 96, 1857. pitis is the earliest reference I 
: : and writ i . €1S given, Dr. Gray hi d out 
and written in ‘Texas.’ This would tions that ps. He has also crossed off the Sords: “Uppes “Missouri,” 
or the figure of it in his First L tr. Gray himself considered the name Mammillaria caespitosa, 
, the same as Engelmann’s Cereus caespitosus of Texas.” 
