s 9 



The West American Scientist. — X. 



(Jf) 



OPUNT1A DA VISIT E. & B. 



E-B 40 t 16. E syn 305. Wp an 5:55. 

 Wat 1 405. ct 3 445 460. He 91. Fr 

 978. 



OPUNTIA DULCIS Engelm. 

 OPUNTIA ECHINOCARPA E. ,& B. 



E syn «05; 1 14; bot ct 1;250. E-B 

 49 t 18 f 5-10 t 24 f 8 seeds. Wp nn 

 5 :55. Py Am nat 9 : 20. Wat I 406. 

 ct 3: J45 4i)0 461. Hm 550. cov 4:21 

 45 40 49 li3 230 270-8. He 91 Jb'r 

 079. 



OPUNTIA EMORYI Engelm. 



E svn 393; bot ca 1 :249; m b 53 1 70 

 71. Vv p an 5 :54. Wat I 406. ct 3': 443 

 461. Hm 550. He 91. Fr 972. 



OPUNTIA ENGELMANNI Slm-Dyck. 



Sm 235. E Ld 207; Am J si 2 14: 

 338; syn 290 [34]; m b 47 t 75 f 1-4, 

 seeds; bot ca 1 :248. Scheer bot Her 

 293. W p' an/ 2:686; 5 :49. Lab 400. 

 Young F-Texas 278. Wat I 406. Hm 

 550. be a OS. t<r 950. 



OPUNTIA EICUS-INDICA Mill. 



Mill G-u ed 8, no 2. i -ur h'\ 1 :555. 

 E svn 290 [24]; m b 49; bot ca 1 :248 

 Wat 1400. ct 3:419 401. Hm 551. 

 Or V\ 7:150; Ca board hort r 18.90. 

 He 91. F]- 931. 



OPUNTIA FRAGILIS Haw. 

 OPUNTIA FULGIDA Engelm. 

 OPUNTIA FULVISPINA Slm-Dyck. 

 OPUNTIA GLAUCOPHYLLA Wendl. 

 OPUNTIA GRAHAMII Engelm. 

 OPUNTIA GRANDIS Hort. 

 OPUNTIA INVICTA Brandegee. 



OPUxNTTIA LEPTDCAULIS D C This is the 

 widely advertised O. frutescens, Engelm., of 

 Texas and xMexico; 2 to 4 feet high, with slen- 

 der terete joints a fourth of an inch thick; 

 very small yellow flowers; berries scarlet. 

 Quite ornamental and a favorite with cactus 

 fanciers. 



OPUNTIA LURIDA Hort. 

 OPUNTIA MACROCENTRA Engelm. 

 OPUNTIA MACRORHIZA Engelm. 

 OPUNTIA MAM1LLATA Schct. 

 OPUNTIA MIORODASYS Pfeiff. 

 OPUNTIA MONACANTHA Haw. 

 OPUNTIA NIGRICANS Haw. 



OPUNTIA OCCIDENTALIS Engelm. A 

 I'rk:kly Pear of luxuriant growth, with stout 

 woody stems and innumerable branches: joints 

 !t to 12 inches long and G to 8 inches across; 

 flower yellowish and orange; fruit 2 inches 

 long, very sour and juicy. 



OPUNTIA PARISH II Orcutt. 



OPUNTIA PUAEACANTHA Engelm. 



OPUNTIA PROLIFERA Engelmann. This 

 densely-branching shrub bears a small flower 

 of a pomegranate purple, and once grew in 

 great abundance where the city of San Diego 

 now exists. 



OPUNTIA RAEINESQUII Engelm. 

 OPUNTIA ROSEA DC. 

 OPUNTIA RUFIDA Engelm. 

 OPUNTIA RUTILA Nutt. 

 OPUNTIA SENILIS Roezl. 



OPUNTIA SERPENTINA Engelm. Procum- 

 bent, with yellow flowers, comparatively rare 

 in cactus collections. 



OPUNTIA SUBULATA Engelm. A beautiful 

 tropical species of rapid and rank growth, 

 with persistent vivid green leaves, and long, 

 straight spines. 



OPUNTIA TENUISPINA Engelm. 

 OPUNTIA TESSELLATA Engelm. 

 OPUNTIA TUNA .Mill. 



Opuntia ursina is a name given by- 

 Albert Weber to a curious and beauti- 

 ful plant of the Mohave desert, adver- 

 tised as the Grizzly Bear cactus. The 

 joints are about 3 by 5 inches, densely 

 covered with slender flexuous ivory 

 white spines, the longest over 6 inches 

 long', and completely hiding the plant. 

 A cutting reminds one of the "Old 

 Man" cactus of Mexico, but this be- 

 longs among the prickly pears — form- 

 ing low wide spreading masses of in- 

 terlacing snow white spines. 

 OPUNTIA VULGARIS Mill. 

 OPUNTIA WHIPPLEI E. & B. 



Genrcss PELECYPHORA Eltrenb. 



PELECYPHORA ASELLIPORMIS Ehrenb. 

 The Hatchet cactus is a little gem 

 from Mexico, so-called from the shape 

 of the tubercles. It bloomed in San 

 Diejro on May day, scarce V 2 inch in 

 length and breadth, with thirteen 

 bright magenta colored petals and 

 seven or eight pale lavendar sepals, 

 the four stigmata white, style and fila- 

 ments tinged with purple, and anthers 

 bright orange. The largest plant 

 among a hundred is but little over an 

 inch in height and diameter, and in 

 earlier days they were literally worth 

 their weight in gold. The flowers are 

 open only in sunlight. 

 PERESKIA ACULEATA Mill. 



The Harbadoes gooseberry or Blad-npple,.a 

 cactus with leaves like an orange tree, excellent, 

 for grafting. 



Genus PFEIFFERA Snlm. 



Onlyone species, which we have never seera. 

 Genn« I'll VLLOC ACTUS Link. 



