Yucca harrimaniae ssp. gilbertiana


Yucca harrimaniae ssp. gilbertiana (Trelease) Hochstaetter, YUCCA (vol. I): 36 (2000)

Synonyms:
Yucca harrimaniae var. gilbertiana Trelease, Annual Rep. Missouri Bot.Gard.18: 225, 1907.
Yucca gilbertiana (Trelease) Rydberg, Flora Rocky Mts.  1061 (1918)

Subspecies, varieties and forma:
Yucca harrimaniae var. gilbertiana forma minor. Hochstaetter seed list 2000.

Type location:
End of Fish Springs Range, Juab Co., Utah.

Distribution:
Restricted to a uninhabited area in west Utah & Nevada, at 1700 to 2000 m.

Short description of the species:
Plants Acaulescent, forming small groups (with underground rhizomes). Leaves pale green to blue-green, concavo-convex, 20 to 40 cm long, 2 to 4 cm wide, with white twisting fibers along the edge of the leaves. Inflorescence up to 100 cm high, racemose or with short branches (very rare!). Flowers, campanulate (bell-shaped) yellow to greenish can be tinged with violet, about 4-6 cm long. Fruit cylindrical, standing upright, woody, 3 to 5 cm long, 2 cm thick, constricted, splitting wide open when the seeds are ripe. Seeds black, has a rugged surface 0,4 to 0,6 cm long and wide 1 mm thick. Flowering time May to June in nature.


Seeds of #1351 Yucca harrimaniae ssp. gilbertiana, Nevada, Baker, 1930 m.. fh 1180.84 sown 2000, (did not germinate, probably because of the cold summer!)

Hardiness:
Not known?
I haven't had any experience with this species yet, but I have grown some of the species that it grows with in habitat: Sclerocactus pubispinus, Sclerocactus spinosior, Pediocactus simpsonii and Escobaria vivipara, those species can be grown in an unheated greenhouse here in Denmark, and I would think that Yucca harrimaniae ssp. gilbertiana would be OK here too.

Related species:
Yucca harrimaniae
Yucca harrimaniae ssp. neomexicana
Yucca harrimaniae ssp. sterilis
Yucca nana

Pictures:
I do not have any pictures of this species in bloom, if you have a photo of a flowering plant that I may use please let me know
 
Yucca harrimaniae ssp. gilbertiana
Wah Wah Valley, Utah, September 7th. 2003
Copyright 2003 Craig Howe USA
Yucca harrimaniae ssp. gilbertiana
Wah Wah Valley, Utah, September 7th. 2003
Copyright 2003 Craig Howe USA
Yucca harrimaniae ssp. gilbertiana
Wah Wah Valley, Utah, September 7th. 2003
Copyright 2003 Craig Howe USA
Yucca harrimaniae ssp. gilbertiana
Wah Wah Valley, Utah, September 7th. 2003
Copyright 2003 Craig Howe USA
Yucca harrimaniae ssp. gilbertiana
Grown in a pot Alexander Heim's garden in  Munich. 
Copyright 2008 Alexander Heim.

Notes:

Reference:
HOCHSTAETTER, F., (1998) Succulenta
HOCHSTAETTER, F; (2000), YUCCA (vol. I): 36 (Yucca harrimaniae ssp. gilbertiana)
RYDBERG, Fl. Rocky Mts. 1061. 1917(1918) (Yucca gilbertiana)
TRELEASE, Ann. Rept. Missouri Bot. Gard. 13: 59 (1902) (Yucca harrimaniae)
TRELEASE, Annual Rep. Missouri Bot.Gard.18: 225, 1907. (Yucca harrimaniae var. gilbertiana)



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