Opuntia Miller (1754)

(Greek "opos" = figs sap)
Because of the figs similar fruits or a combination of the Aztec name "nopali" (Spain "nopal" = Opuntia) and
(Latin "pungere" = prick) Prickly Pear.
By the natives as Tuna mentioned. In the 16th century by the Spanish imported and escaped to the climatic favorable Mediterranean region.
The Greek scholar Plinius designated a plant as Opuntia which occurred near the Greek town Opunet.
Curiously enough prevailed the name of the escaped Tuna, it became recognized as genus name later.

tree-like or shrubby, pads flat circular, also dwarf forms with globular pads; spines very different in number, lenght and color
flowers wide opening, mostly on the upper pad edge, yellow, whiteish-yellow, orange or shades of red
fruits large, firgs similar shaped, color different, partly eatable, partly used as fodder; seeds large, broad circular, flat

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Distribution

from Canada (British Columbia) thru the USA and Mexico to south Chile
steppes and mountains

Growth period

very sunny and hot, a location outdoors is possible and recommend
sufficient watering and fertilize, hardly sensitive to too much moisture
without sufficient fertilizer the plants begin to waste away
best time therefor is from March to May, at least it should be consumed the nitrogen reserves in June
the best is to use a complete fertilizer therefor

Winter period

complete dry at about 42–50 F (6–10°C)

Soil-mixture

nutritious, permeable to water and porous
addition of some humus, quartz gravel, pumice, expanded slate, expanded clay is recommendable
do not choose the pots too small
   
Opuntia aurea E.M. Baxter (1933)
 
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Habitat

USA
Arizona - Coconino County, Mohave County
Utah - Kane County, Washington County
pinyon-juniper woodlands
in 4900–5900 ft (1500–1800 m) altitude

Description

golden (flowers) Opuntia
low, flat clumps or creeping on the terrain outspread
stem segments elliptic to obovate, green to blue-green, 2.4–5.9 x 2–4.7 in (6–15 x 5–12 cm), low tuberculate
areoles circular, wool tan
spines absent

glochids tan to ocher, to 6 mm long
flowers 2–3 in (5–7.5 cm) long and Ø, yellow
fruits tan to gray, 0.6–1 in (1.5–2.5 cm) Ø, without spines
seeds tan, flattened, very large, 9–12 mm Ø

Flowering time

May–June in cultivation and in habitat

Comment

Opuntia aurea is with protection against rain and moisture cold hardy to ca. -4 F (- 20°C).
Synonyms Opuntia basilaris var. aurea (E.M. Baxter) W.T. Marshall (1941)
Opuntia lubrica var. aurea (E.M. Baxter) Backeberg (1958)
Opuntia erinacea var. aurea (E.M. Baxter) S.L. Welsh (1986)
CITES Appendix II
 
 

 

 

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