yucca whipplei การใช้

• The yucca, " Yucca whipplei ", is pollinated exclusively by " Tegeticula maculata ", a yucca moth that depends on the yucca for survival.
• The plant treated as the subspecies " Yucca whipplei " subsp . " newberryi " has been shown to be genetically distinct, and is often treated as a distinct species, " Hesperoyucca newberryi ".
• The south-facing slope on the right side is much drier ( receiving more direct sun ), and is more sparsely vegetated with the more drought tolerant " Artemisia californica " and " Yucca whipplei " . ]]
• Yet others ( e . g . " Flora of North America " and the " Jepson Flora " ) do not recognise any subspecies or varieties ( within either " Yucca whipplei " or " Hesperoyucca whipplei " ), as the wide variability within the species precludes the segregation of discrete subspecies.