450 ADDlTlOiNS AND CUllKECTlUNS TU VOL. 1. 



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

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

 in" : fruit oval, green, juicy, with ubli(iuely ubovate curved brownish pitted seeds. 



"At Ivanpah, 30 miles iiortheiist of Sau Bernardino, in one of the monntain mngcs stretcliing 

 into the dosiMt, S. B. Parish. Hauls 2 to 4 inches liit^h, and 2 to 2i inches thick ; tubcrclus 

 about half an inch long. This and M. Arizoiiica belong to the M. vivipura group, and may 

 eventually have to be united with it." — Knijelmann. 



Page 247. 3. CEREUS. 



2\ C. gigantens, Engelm. " Erect, cohunnar, simple or with a few erect 

 branches tuward the upper part ; ribs 18 to 21 ; areola ovate-orbicular, woolly when 

 young, bearing 12 to lli exterior slender spines and 4 to G much stouter inner ones, 

 the former ^ to 1^ inches long, the latter 1 to '1\ inches: Uowers 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 1-1 to 18, slender, greenish yellow: fruit '2\ or 3 inches 

 long, beset with 3U or 40 small scales, woolly in their a.\ils, bursting irregularly by 

 3 or 4 valves and dropping the greenish white p\dp with its black seeds." — Cactt. 

 Mex. Bound. 42, t. (il, 02, and frontispiece. 



Common along the Kio Colorado, on rocky slopes, and eastward tlirough Arizona. "The 

 woody skeleton consists of long rods, corres|(onding lo sinu.ses between the ribs, in younger plants 

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

 luscious fruit is an important article of fooil to tlie Indians." — Enijclmunn. 



l'ago249. 4. OPUNTIA. 



9. O. pulchella, Engelm. Near Pyramitl Lake, Lemmoii. 



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

 about 20 areola', vi-ry .spiny : stigmas 5, s})reading." — Engehnann. 



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

 simple below and there covered only with loosely adhering dtiad 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, | 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, ttbtuse ; stigmas 7 or 8, 

 green, capitate, erect : fruit with about 50 bristly but not spiny areokc, 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. It, Rep. iv. 50, t. I'J, 

 tig. 1-7. 



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

 desert itself (At?r//, Parish), and again on the eastern edge of the desert and into Arizona. In 

 the latter region 10 to 12 feet higli, 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, li 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, jirobably those 

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

 dropping on the giound strike root or more frecpnintly are driven about and rolleil 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 CijUndopiuUia. The paucity 

 of seeds is also a peculiarity of this curious plant." — Eiujchnann. 



Page 251. 1. MESEMBRYANTHEMUM. 



2*. M. coccineum, Haw. Stems erect from a wooily 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- 



