209 Planta Lindheimeriane. 
smaller, more northern form, with more and thinner spines 
(radial 5-10, central 12—16 lines long). Flower from 
20 to 35 lines long, and 24 —30 in diameter when fully open ; 
petals then often somewhat recurved: flowers open two days, 
only in bright forenoon sunshine. My specimens from the 
Rio Grande have 5 erect stigmata and a longer flower ; all 
the others have 6—8 spreading or even recurved stigmata 
and a shorter flower-tube. Berry about 4 lines in diameter. 
Withered flower finally deciduous. Fruit often bursting, when 
the filamentous red pulp and the black, thimble-shaped, verru- 
cose seeds are seen: this pulp is formed by the clavate, elon- 
gated, twisted funiculi, which most probably form the pulp of 
all the soft Cactus fruits, but they do not always remain as 
distinct as in this species. 
Ecnisocacrus Texensis, Hepf. (E. Lindheimeri, Engelm. 
l.c.) Mostly depressed, but sometimes globose. Common 
from the Colorado to the Rio Grande, and from thence to Sal- 
tillo (Dr. Gregg). Near New Braunfels it prefers the so- 
called Muskit-flats, or fertile level places with Muskit trees, 
overflowed in the rainy season. My specimens have several 
times  fructified.. Berry subglobose, pulpy, red, about 8 or 9 
lines i in disnetgfy covered with spiny bristles and soft wool, 
crowned by the woolly remains of the flower: seeds reni- 
form, compressed, large, smooth and shining. Ribs in smaller 
specimens 13 — 14, in larger mostly 21, sometimes 94.  Areole 
about 6 lines long, and 12 lines apart: spines from 6— 10 
lines long in some, 15 — 25 lines in others; sometimes the cen- 
tral spine is 2 or 3lines broad. Flowers all open within a few 
days, in May (in St. Louis) ; unlike the last mentioned species. 
CEREUS. 
402. CEREUS czsprrosus, Engelm. Pl. Lindh. l. c. Com- 
mon about New Braunfels; in flower in May. — This plant 
has been cultivated in Europe, as Prince Salm informs me, 
under the name of Echinopsis Reichenbachiana, Hortul., and 
has been confounded with C. pectinatus: compare Wisliz. 
