Cylindropuntia munzii

(C. B. Wolf) Backeberg

Kakteenlexikon, 113. 1966.

Common names: Munz cholla
Basionyms: Opuntia munzii C. B. Wolf Occas. Pap. Rancho Santa Ana Bot. Gard. 2: 79, fig. 23. 1938
Treatment appears in FNA Volume 4. Treatment on page 115. Mentioned on page 103, 104.

Trees or treelike shrubs, with trunk (s) and main branches spreading, bearing terminal tufts of usually drooping branchlets, 2–4 m. Stem segments easily detached, gray-green, 4–16 × 1.2–2.5 cm; tubercles prominent, narrowly oval, 1–2 cm; areoles subcircular to obdeltate, 5–7 × 3–4.5 mm; wool tawny to yellowbrown, aging gray. Spines (7–) 9–14 per areole, at most areoles, erect or spreading, yellow, aging red to gray-black with pale tips, terete or abaxial ones slightly flattened, the longest to 3 cm; marginal bristlelike spines shorter, 0–4; sheaths pale-yellow becoming golden apically, baggy. Glochids in adaxial crescent and sometimes small tuft, yellow, inconspicuous, 0.5–2 mm. Flowers: inner tepals pale reddish maroon-brown, elliptic, of irregular lengths, 8–15 mm, emarginate-apiculate; filaments green; anthers yellow; style and stigma lobes cream. Fruits easily detached, tan when mature and fertile, globose, 17–24 × 17–21 mm, dry, tuberculate, spineless but bearing numerous very long glochids; basal tubercles not markedly longer than distal ones (except in sterile fruits); areoles 30–40. Seeds pale-yellow, rounded-deltoid, slightly flattened, 3–4.5 × 3–4 mm, sides smooth; girdle smooth, not protruding. 2n = 22, 33.


Phenology: Flowering spring (Mar–May).
Habitat: Sonoran Desert, flats, hills, sandy to rocky soils
Elevation: 400-700 m

Distribution

V4 219-distribution-map.gif

Calif., Mexico (Baja California)

Discussion

Cylindropuntia munzii hybridizes with C. echinocarpa forming a shrub to 1.5 m, with shorter tubercles and baggy-sheathed spines obscuring the stem and bearing fruits with long glochids but no spines. The chromosome number for the hybrid is 2n = 22.

Selected References

None.

Lower Taxa

None.

... more about "Cylindropuntia munzii"
spreading +  and erect +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
cushionlike +
gray +  and tan +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
deciduous +  and persistent +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
30 +  and 40 +
subcircular +  and obdeltate +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Donald J. Pinkava +
(C. B. Wolf) Backeberg +
not markedly longer +
Opuntia munzii +
proliferating +
flattened +  and cylindric +
Munz cholla +
Calif. +  and Mexico (Baja California) +
400-700 m +
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (15 cm150 mm <br />0.15 m <br />) +
indehiscent +
persistent +, long +  and deciduous +
detached +
17mm;24mm +
tuberculate +
globose +
dry +  and fleshy +
1.7 cm17 mm <br />0.017 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
not protruding +
inconspicuous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Sonoran Desert, flats, hills, sandy to rocky soils +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
deciduous +
flattened +  and conic +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
succulent +
tuberculate +
fluted;spheric;depressed-spheric or club-shaped +
tinged color +
sometimes covered by outgrowths of proximal portion of style base or of flower tube wall +  and open +
persistent +  and deciduous +
Flowering spring (Mar–May). +
ridgelike +  and nipple--shaped +
Kakteenlexikon, +
3;2;2;30 +
tuberlike +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
flattened;rounded-deltoid +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
deciduous +  and persistent +
conspicuous +
9 (?) +  and 14 (?) +
flattened +
hard +  and rigid +
decurrent +
winged +  and unsegmented +
tuberculate +  and smooth +
40 cm400 mm <br />0.4 m <br /> (50 cm500 mm <br />0.5 m <br />) +
4 cm40 mm <br />0.04 m <br /> (16 cm160 mm <br />0.16 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
segmented +
woody +  and succulent +
Opuntia sect. Cylindropuntia +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Cylindropuntia munzii +
Cylindropuntia +
species +
dull +  and glossy +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
crescent +
shrub +, arboreous +  and tree +
terrestrial;epiphytic or epipetric +
gray +, tawny +  and yellowbrown +