t 



OPUNTIA. 



l6l 



from 



Mountains. Arizona, taken by Dr. MacDougal ; figure 200 



from the collection made by Professor J. W 

 MacDougal in 1902. 



E 



1S9G. 



This 



George, southwestern Utah. In 1909 E. W. Nelson made a collection for us m this region, 

 but the only shrubby, juicy-fruited species which he collected has brown spines and brown 

 alnohiH.. which would sccm to exclude it from 0. palmeri. It is not at all unhkely that 



palmeri 



specimens from 



, -I 



ll72. Opuntia laevis Coulter, Contr. U. S. Nat. Herb. 3: 4i9- 1896. 



Loosely few-branched, i to 2 meters high, but in cultivation often forming a ovv, dense bush 

 ioint^oSteTo oblong. I'.s to 3 dm. long. li|ht green, often ^PJ^f - ^ut usua% ^^^^^^^^ 

 ivinrt ^ni'nes t cm lone or less at the areo es of the upper part of the joint, areolcs raiiier aistaiu, 

 mall flower lar^e 6 to 7 cm broad; petals lemon-yellow, sometimes tinged with red. broad, and 

 Itui; orTetusTfi'lamenL and style sLrt pale 7-1-; stigma-lobes green -ary -b^^^ 

 or less tuberculate, at first leafy, often bristly at top; fruit obovoid, 5 to 7 cm. long, seeds 4 5 mm. 



broad. 



Type locality: In Arizona. 



Distribution: In the mountains 



Schumann 



IllustratioZ: Ariz. Agr. Exp. Sta. Bull. 67: pL 8, f. i; N. Mex. Agr. E 



World 



Mac 



from Tucson, Arizona, in 1902, to the JNew YorK r^uidiii^. 

 mtia stricta Haworth, Syn. PI. Succ. 191. 1812 ^ ^ 



Cactus opuntia inermis De Candolle, Pi. Succ. Hist. 2: pi. 138 [Cj. 1799- 

 Cactus strictus Haworth, Misc. Nat. 188. 1803. 



' - + 





opuntia inermis De Candolle, Prodr. 3: 473. 1828 

 opuntia airampo Philippi, Anal. Univ. Chile 85. 492- i' 

 Opuntia parva Berger, Hort. Mortol. 411- i9J2. 

 opuntia bentonii Griffiths, Rep. Mo. Bot^Gard^ 22- 25- 

 opuntia longiclada Griffiths, Bull. Torr. Club 43 • 525^ i 



1912- , , .. 



descnpUon 



opuntia longiclada Griffiths, Bull. Torr. ciuo 43- ^-> '>' ^ ^plHom over 8 dm. high; joints 



Bushyf low. spreading plants, -me|im- formmg^^^^^^^^^ 30^cm^ long 



obovate to oblong, usually 8 to 15 cm. long, but ^o"^^^^";^!^ ""j^^^^^^ ^^ greenhouse specimens, some- 

 or more, green or bluish green, glabrous, often sP^^f^f^^fP'^'fa^bunS leaves stout, subulate, 

 times but a spine or two on a joint, at other t^!"^%^P^"^^^^XXs ^hort spbes, when present, usually 



3 to 4 mm. long; areoles distant, the wool brownish, ^heglochids short p v ^^^^ 

 I or 2 from an areole, stiff, terete, yellow, i to 4 ^m. long Aovvers 6 to 7 ^^^^^H^^^^ ^^^^^^^ 



broad, obtuse, apiculate; filaments yellow to SfX^^' X\^ tapering to a slender base, 



white but sometimes greenish; fruit purple usually broadest at top, v- 



4 to 6 cm. long, with a more or less depressed umbilicus. 



Type locality: Not given. 

 Distribution: Western Cu 



Weber 



1898) is given by Weber as 



upunna vulgaris uuitutivu, **v...-^ ^-- u^^ (Vi\r<irht Monatsschr. i^^aKi 



synonym of O. inermis; Opuntia balejirtcaW^he' Hirsdit says it belongs here. 

 5. 1898) has also been used, but not described and Hi™^>'America It w 



Th?s ipecies is often -ItiVated on the w^^^^^ - 



It was there 



given the name U. airampo oy -l»i • ^ ""'i-k-. •■ -- - - 



vians. a native species, quite different from this one. Queensland. It has now run 



This species is the pest pear o New f;^ Jrll^^^^ 

 wild over thousands of acres ofjthe^^esi^agiu^u^^ _ o^ _ 



;^;;g;;^i^;;;:^;i^^i^w"- ^9x2) gives the date 1797. 



^ 



4 



i 



