Yucca cernua
Yucca cernua Copyright 2016 Hans Hansen.
Yucca cernua Keith
Common Name: Nodding yucca
Habitat: Phenology: Plantssss in either flower or fruit have been observed June - November (Keith, 2003).
Synonyms:
Type location:
Distribution:
East Texas in a six square
kilometer area in west-central Newton County and adjacent eastern
Jasper County (Keith, 2003). Openings in and margins of pine hardwood
forests on brownish acid clays of the Redco Series (Keith, 2003).
Short description of the species:
Plants acaulescent (trunkless) forming solitary clumps. Leaves usually 40-70 cm long, 3.5-6.5 cm wide at widest place, glaucous and bluish-green when young, yellowish-green to olive-green and flat to slightly concave in age, the margin of the leaves corneous, yellowish and denticulate (with short sharp "teeth's"). Inflorescens 2-4 m tall. Flowers tepals 6, white or slightly greenish, mostly 3.5-5 cm long and about half as wide. The flowers are pendant on nodding branches in a long panicle in the upper half of the woody scape. Fruit is pendant (hanging), dry, dehiscent (splitting open when mature), somewhat woody capsule 3.2-4.5 cm long and 2-2.5 cm wide. Seeds unknown at the time of writing.
Notes:
There
are only known a very few plants of this species, one "big"
population of approximately 1000 plants, and there are known six
other small populations with fewer than 100 plants in each place.
The status of Yucca cernua,
status not sure yet, it might a natural hybrid with genes from Yucca
rupicola or Yucca
pallida? More study is needed.
Yucca cernua is
related to:
Yucca
reverchoni
Yucca
rostrata
Yucca
rupicola
Yucca
pallida
Yucca
thompsoniana
Hardiness:
The hardiness of Yucca
cernua for cultivation here in Denmark is not know at the time of
writing, but it might only be hardy enough for cultivation inside an
unheated greenhouse. It is cultivated in several gardens in Germany
and in various gardens in the USA (Michigan in Massachusetts).
My own plants:
I do not cultivate this new species yet.
Pictures:
Hans Hansen and his Yucca cernua, in bloom July 2016. Hans is about 2 meter tall, so the flower is really huge. Copyright 2016 Hans Hansen. |
Yucca cernua Copyright 2016 Hans Hansen. |
Yucca cernua Copyright 2016 Hans Hansen. |
If you have a photo of a Yucca cernua? Would I be very happy if I may use it! Let me know.
Reference:
Keith,
E. L. 2003. Yucca cernua (Agavaceae, series Rupicolae), a new species
from Newton and Jasper counties in eastern Texas. 20(3): 891-898.
Botanical
Research Institute of Texas, New Native Texas Taxa: New To Science
If you have additional references I would be very interested in knowing about it.
Back
to list with Yucca species:
! Ordbog (Danish text!) ! Photo gallery ! Yucca ! Hardy Cactus ! E-mail ! DANSK ! Home ! Caudex index ! Cucurbitaceae (Danish text!) ! Links ! Search ! NEWS ! Wanted !
Copyright ©
1998-2009
Benny
Møller Jensen
Hjørring
Denmark