tu 
ICOSADRIA, MONOGYMA, 
OPUNTUk. 
tonuisstniis subrigidis ruhi^inosis. 0. 
senilis Farm. In Brasilia, "^. Arti- 
ciili 3 — 5 line. lon^i. 
as, 0, spinutifera Salm; suhere- 
cta; articulis ovatis crassis glaiicis; 
nodis siH)api)roxiniatis parvis glauco- 
tonieiitosis; aciileis setiforniibus par- 
vU albis, 1 — 21oiigloribus. 0. oli^an- 
Uia h. vind. In Mexico, "^. ArlicuU 
4,-5 line, longi et 2 — 3 unc. laii. 
3i>, O. missoiiriensis DC* humilis 
diTuricata; articulis planis rotundo- 
ovatis dilute vii'idibus suljtuhercula- 
tiK; i»odis confertissimis fusco-tomen- 
toil.i aeruginoso-setosis; aculeis 8 — 
10 adpressis albis 1 longiore depresso 
caeleiis radiatis. O. polyacautba Haw. 
CacluR ferox Nutt. Jn Amer, bor, ad 
Slissoitrtn. ■^. Articuli 3 unc. longi. 
Ij'lores ex Nutt. sulpluirei. 
40. O, media flaw, humilis diva- 
ricata; articulis planis oblongo-ova- 
tis; aculeis numerosis alhis 2 — 3 lon- 
sioribus iuferne divaricatis. In Amer. 
4i. 0, splendens h. angl, humilis; 
articulis minimis ; nodis subconfertis 
albo-tomentosis ; aculeis iiiveis suli- 
getosis brevibus subarcuatis exterio- 
ribus 7, mediis 1 — 2. Fatria igno- 
42. O. Amyclaea Tenore; erecta; 
articulis ellipUcis tenuissimis nodis 
subiiudis; aculeis 4—6 validis albidis 
divaricatis. O. maxima Salm. In Ita- 
lia? ■^. Articuli 12— 15-unciales. 
Aculei 1-onc. longi. Florcs iutei. 
43. 0. dejecta Salm; erecta; ar- 
ticulis longis tenuibus viridibus; no- 
dis distantibus subtomeutosis superne 
altio-fietosis, iuferue aculeis 5—6 al- 
bidis. O. diffusa borizoutalis Haw. 
In Harannah. "^. Ariicuii 8 — 9 unc, 
iongi et 1^ unc. latt. 
44. 0, candelabriformis h, monac, 
erecta; articulis ovatis vel ellipticis 
crassis glaucis; uodis suhapproxima- 
tis imniersis albo-setosis; aculeis 4 — 
5 albis, iufimolongissimo piano iuferne 
adpresso. In IiIe.iico. '^, Articuli 6 — 
7 unc. longi ct 3 — 4 lati, 
4.5, 0. lasianiha h, vindeb. erecta; 
articulis oblongo-ovatis crassis viri- 
dibus subtuberculatis; nodis subdistan- 
tibus albo-setosis; aculeis strictis te- 
nuibus albis 3 — 4 superioribus brevi- 
bus infiroo longis.simo. In Mexico. '^. 
Articuli 4 — 5 unc. long! et 2\ lati. 
0. 1 audelabriforuii valde affiuiii. 
46. O. megacantha Salm; erecta; 
articulis magnis oblongis vel ovatis 
crassis obscure viridibus; noUi^ ap- 
proxiniatis glauco-toraentosis, superno 
fusco - setosis ; aculeis 7 — 10 rigidis 
all'is, 1 — 2 Jongioribus recnrvis. 0. 
mexicana Haw. In Mexico. ^. Trun- 
cus lignosus. Articuli 7 unc. lougi e$ 
3 unc. lati. 
47. O. tomentosa Salm ; erecta; 
articulis planis opace viridibus breve 
pilosis' nodis subdistantibus; aculeis 
3— '6 tenuibus albidis. InAmer.avstu 
*^. Articuli i ped. longi et2^ unc. lati. 
Flores rubri. 
48. 0, oblongata Wendl. erecta; 
articulis ovato-oblongis obscure viri- 
dibus lenuiter tomentosis; nodis subre- 
motis glauco-tomeutosis superne breve 
fusco-setosis; aculeis 2—6 rigidis stri- 
ctis albis. In Mexico. "^. Articuli 4— 
6 unc. longi et 2—3 unc. lati. 
49. 0. Tuna Mill, erecta divarl- 
cata; articulis planis magnis elliptic 
cis margine repandis; nodis distanti- 
bus glauco-tomentosis superne fusco- 
flavo-setosis; aculeis 4 - 6 rigidis cras- 
sis subulatis inaequalibus pallide fla- 
vis. Dill, elth, f, 3»6. 0. coccinea 
Hort. Cactus Bonplandii Kunlh. In 
Quito et Mexico.'^. Articuli 4— 8-uuo. 
Flores sordide rubri. 
60. 0. Pseudo-Tuna Salm; ere- 
cta raniosissinia; articulis obovatis 
planis crassis magnis dilute viridibus; 
nodis distantibus superne flavo- seto- 
sis; aculeo 1 subulato crasso flavo. 
In Amer atistr. '^, 0. Tunae proxima 
sed altior lamosior et articuli 1 P*^^* 
longi. Flores flavi, 
61. 0. glaiicopiiylla Wendl. ere- 
cta; articulis obovatis subundulatis 
glaucis; aculeis 1--2 subulatis uncia- 
libus e tomeuto flavescenti. In Mexi- 
co. ^. Videtur affiuis O. Pseudo- 
Tunae. 
62. O, horrida Salm; snberecfa; 
articulis cuneiformibus vel obovatis 
repandis; nodis subtuberculatis sub- 
remotis flavo -setosis; aculeis 4 — 6 
flavis saepe fusco- annulatis rigidis 
crassis. O. humilis Haw. In Amer. 
auxtr. ^. O, Tuuae afiinis sed flore 
diversa. Articuli 8 — 10 unc. longi- 
Fiores sulpburei. '^ 
53. O.DiUemiDC. erecta; articfl- 
Hs rotundo-uvatis undulaii^ ^laucis; 
liOdlii ilavitt demum fu.scu-tomcaio«t< 
