450 ADDITIONS AND CORRECTIONS TO VOL. I. 



about 20 nearly in a single series, narrowly lanceolate, acuminate, somewhat fimbri- 

 ate at base, light straw-color turning to purplish at the tips : stigmas 5 or 6, spread- 

 ing : fruit oval, green, juicy, with obliquely obovate curved brownish pitted seeds. 



"At Ivanpah, 30 miles northeast of San Bernardino, in one of the mountain ranges stretching 

 into the desert, S. B. Parish, Heads 2 to 4 inches high, and 2 to 2J inches thick ; tubercles 

 about half an inch long. This and M. Arizonica belong to the M. vivipara group, and may 

 eventually have to be united with it." Enyelmann. 



Page 247. 3. CEREUS. 



2 a . C. giganteus, Engelm. " Erect, columnar, simple or with a few erect 

 branches toward the upper part ; ribs 18 to 21 ; areola3 ovate-orbicular, woolly when 

 young, bearing 12 to 16 exterior slender spines and 4 to 6 much stouter inner ones, 

 the former \ to 1 inches long, the latter 1 to 2^ inches : flowers lateral near the 

 woolly top of the stem and branches, 3 to 5 inches long and 2 or 3 in diameter, open 

 day and night: stigmas 14 to 18, slender, greenish yellow: fruit 2J or 3 inches 

 long, beset with 30 or 40 small scales, woolly in their axils, bursting irregularly by 

 3 or 4 valves and dropping the greenish white pulp with its black seeds." Cact. 

 Mex. Bound. 42, t. 61, 62, and frontispiece. 



Common along the Rio Colorado, on rocky slopes, and eastward through Arizona. "The 

 woody skeleton consists of long rods, corresponding to sinuses between the ribs, in younger plants 

 distinct, in older ones connected by a network of fibers and forming a hollow cylinder. The 

 luscious fruit is an important article of food to the Indians." Engelmann. 



Page 249. 4. OPUNTIA. 



9. O. pulchella, Engelm. Near Pyramid Lake, Lemmon. 



11. O. echinocarpa, Engelm. & Big. " Leaves 3 or 4 lines long : ovary with 

 about 20 areolse, very spiny : stigmas 5, spreading." Engelmann. 



13*. O. Bigelovii, Engelm. "An erect arborescent shrub with a stout trunk, 

 simple below and there covered only with loosely adhering dead joints, densely 

 branching above, the ultimate joints subglobose and mostly deciduous : leaves minute, 

 subulate, only | of a line long : tubercles crowded, short, hemispherical ; spines very 

 numerous, f to 1 inch long, strongly barbed, covered with yellowish-white glisten- 

 ing loose sheaths : flowers dirty greenish red, about 2 inches in diameter ; ovary 

 with 30 to 40 bristly areolae ; petals spatulate-obovate, obtuse ; stigmas 7 or 8, 

 green, capitate, erect : fruit with about 50 bristly but not spiny areolas, oval, tough- 

 fleshy, soon drying, with a very deep umbilicus and small seed-cavity, sterile or with 

 one or few (rarely numerous) regular thick seeds. Pacif. E. Eep. iv. 50, t. 1 9, 

 fig. 1-7. 



"Hilly margin of the desert on the east slope of San Bernardino Mountains, but not in the 

 desert itself (Parry, Parish), and again on the eastern edge of the desert and into Arizona. In 

 the latter region 10 to 12 feet high, in California rarely over 4 or 5. The woody skeleton forms 

 a wide tubular cylinder, closely reticulated, extending only into the largest branches. Seeds 

 circular, 1J or 2 lines in diameter and a line thick, with a rather narrow commissural band. A 

 peculiar feature of this species are the deciduous nearly globular ultimate joints, probably those 

 of the later summer's growth, which withering adhere to the plant by their barbed spines, or 

 dropping on the ground strike root or more frequently are driven about and rolled into balls by 

 the wind, a pest and dread to men and beasts. These deciduous joints remind us of the decidu- 

 ous branchlets of Taxodium. The leaves are remarkably small for a Cylindopuntia. The paucity 

 of seeds is also a peculiarity of this curious plant." Engelmann. 



Page 251. 1. MESEMBRYANTHEMUM. 



2 a . M. coccineum, Haw. Stems erect from a woody base, with strict rigid 

 brownish branches : leaves semicylindrical or compressed-triangular, i to 1 inches 

 long by a line broad, mucronate, pellucid-punctate : flowers terminal, erect, rose- 

 color or scarlet : calyx broadly turbinate, 3 to 5 lines long : stamens yellow : stig- 



