Coryphantha cornifera(DC . ) Lem .
Rhinoceros Cactus
Cactus cornifer , Echinocactus cornifer , Mammillaria cornifera
Photo viawikipedia.org
Family : CactaceaeSubfamily : CactoideaeTribe : CacteaeGenus : Coryphantha
Coryphantha corniferais a small cactus with a dispirited - global , unremarkably solitary stem with conical , spirally set up nodule tip with oval , felt up areoles that gestate clusters of spines . The stem is slow Olea europaea - green , woolly at the acme , and can develop up to 5 inches ( 12.5 atomic number 96 ) tall and 6 inches ( 15 cm ) in diam . The tubercles are cone-shaped , rhomboid at the base , and can pass up to 0.6 column inch ( 1.5 curium ) in distance . Each areole bears 10 to 20 radial and up to 3 key thorn . The radial spines are whitish to yellowish , sometimes with drab tips , quantify up to 0.6 inches ( 1.5 cm ) long , while the key spines are dismal brown , becoming Charles Grey at the base with age , measure 0.4 inches ( 1 cm ) long .
The flowers are funnel - shaped , up to 3 inch ( 7.5 cm ) in diameter , with yellow petals , orangish filaments , yellow-bellied anther and stigma . They appear at the tip of the stems from belated spring to summer .
Coryphantha corniferais aboriginal toMexico . It grows on hills in limestone gravel , mainly in Hidalgo and Querétaro but also in Guanajuato , Jalisco , San Luis Potosí , and Zacatecas .
USDA hardiness zones9a to 11b : from 20 ° F ( −6.7 ° degree Celsius ) to 50 ° F ( +10 ° C ) .
If you may grow cacti and succulent successfully , you may likely growCoryphanthas without too much trouble . They love to be in very bright photo , but generally not to steer sunlight . The risk , particularly during the hottest hour of the Clarence Shepard Day Jr. and during the summer , is to getsunburned .
The average winter minimum temperature , in general , should not come below 40 ° F ( 5 ° C ) , unless individual elision . big plant ( at least two years old ) can defy intense Robert Frost , but only if the temperature rise chop-chop . To boost better unfolding , permit the plants to enjoy a cool down full point in the winter and suspend tearing .
leave the soil to dry out about betweenwaterings , but then H2O thoroughly . Immaculate drainage is essential , so never let the pots sit in water . Suspend water in the winter , but mist from time to time .
These cacti are very susceptible to rot and requirewell - drained soil . Use a potting commixture that is label for cactus or succulents .
See more atHow to originate and handle for Coryphantha .
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