Glandulicactus uncinatus

(Galeotti) Backeberg

Beitr. Sukkulentenk. Sukkulentenpflege 1939(2): 34. 1939.

Illustrated
Basionyms: Echinocactus uncinatus Galeotti Ab bild. Beschr. Cact. 2: plate 18. 1848
Treatment appears in FNA Volume 4. Mentioned on page 209.

Discussion

Varieties 2 (1 in the flora).

Without its reddish flowers or fruits, Glandulicactus uncinatus resembles Ancistrocactus brevihamatus and, especially, Ferocactus hamatacanthus. The variable areoles of the three species are similar except for the diagnostic hooks on the abaxial radial spines of Glandulicactus.

Glandulicactus uncinatus differs from Hamatocactus bicolor of the Tamaulipan thorn scrub by its strongly crenate ribs, greatly elongated areoles on sexually mature plants, dome-shaped instead of peg-shaped areolar glands, broadly funnelform-campanulate receptacle, tricolpate pollen, relatively large perisperm, and strongly curved embryos. The peculiar dark red to russet or brownish purple tepals of Glandulicactus contrast with the bright yellow inner tepals of Hamatocactus, but both genera share showy red fruits and hooked central spines. Straight-spined variants are well known in Hamatocactus bicolor, but not reported in Glandulicactus, where even the abaxial radial spines are consistently hooked.

Selected References

None.

"elongated" is not a number.

... more about "Glandulicactus uncinatus"
cushionlike +
several +  and 1 +
apart +  and spaced +
circular to linear +
deciduous +  and persistent +
hourglass--shaped +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Allan D. Zimmerman +  and Bruce D. Parfitt +
(Galeotti) Backeberg +
hardened +
Echinocactus uncinatus +
triangular +
flattened +, terete to somewhat +  and hooked +
proliferating +
flattened +  and cylindric +
not mucilaginous +
crenate +  and notched +
N.Mex. +, Tex. +  and Mexico +
not separating +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
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 +
15mm;25mm +
spheric +, obovoid +  and ovoid +
succulent +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
conspicuous +
1.2 cm12 mm <br />0.012 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
deciduous +  and persistent +
rudimentary +
flat +  and terete +
nearly +  and microscopic +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
tuberculate +
fluted;spheric;depressed-spheric or club-shaped +
9 cm90 mm <br />0.09 m <br /> (13 cm130 mm <br />0.13 m <br />) +
50mm +  and 90mm +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
crenate-serrate +  and entire +
deciduous +  and persistent +
not mucilaginous +
ridgelike +  and nipple--shaped +
Beitr. Sukkulentenk. Sukkulentenpflege +
protruding +
crenate-serrate +  and entire +
fringed +
arillate +  and strophiolate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
obovoid;pyriform +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Illustrated +
3.5 cm35 mm <br />0.035 m <br /> (4.7 cm47 mm <br />0.047 m <br />) +
straw colored +  and pale gray or reddish +
deciduous +  and persistent +
3 (?) +, 8 (?) +  and 10 (?) +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
hard +  and rigid +
decurrent +
unsegmented +
7.5 cm75 mm <br />0.075 m <br /> (10 cm100 mm <br />0.1 m <br />) +
grayish green +  and bluish green +
7cm;15cm +
spheric +  and cylindric +
succulent +
5cm;7.5cm +
pale-yellow +  and dull orange +
tuberculate +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Glandulicactus uncinatus +
Glandulicactus +
species +
dull +  and glossy +
9mm +  and 15mm +
6mm +  and 10mm +
epiphytic;epiphytic;epiphytic +
not deep-seated +
barrel-shaped +  and spheric +