Peniocereus greggii

Peniocereus greggii
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Core eudicots
Order:	Caryophyllales
Family:	Cactaceae
Genus:	Peniocereus
Species:	P. greggii
Binomial name
Peniocereus greggii (Engelm.) Britton & Rose
Synonyms
Cereus greggii Engelm.

Peniocereus greggii is a cactus species originating from Arizona (USA) and Sonora (Mexico). Common names include Arizona queen of the night, nightblooming cereus and Reina de la noche.

This cactus has stems about 1/2-1 inch wide with 6-9 edges. Its flowers are white, up to 30 centimetres in diameter with a scent redolent of vanilla. The flowers open after sundown, closing and wasting after a few hours. After about two and one half years growth in a sunny west facing window seedlings vary from 1 to 2.5 inches long with an equal or slightly greater length carrot shaped root. Seedlings exhibited three to four edges. Seeds were collected from a single fruiting individual on family property near the eastern section of Saguaro National park outside Tucson, AZ.

See also

• Nightblooming cereus - for others, and especially Selenicereus grandiflorus

External links

• Desert-tropicals.com: Night Blooming Cereus, Reina de la Noche. Scientific Name: Peniocereus greggii
• Time lapse of plant from bud to bloom