Agave longiflora

Agave longiflora (synonym Manfreda longiflora) is a species of flowering plant in the family Asparagaceae that is native to the Lower Rio Grande Valley of Texas in the United States and northern Tamaulipas in Mexico.^[1] Common names include amole de río, longflower tuberose, and Runyon's huaco.^[3] The type specimens were sent by botanist and photographer Robert Runyon (1881–1968) to the New York Botanical Garden in 1921. Consequently, the species was initially placed in a monotypic genus named in his honour, Runyonia, by Joseph Nelson Rose.^[4] The species has been placed in the genus Manfreda, now absorbed into Agave. A. longiflora is a rhizomatous perennial with 3–7 prostrate leaves in a basal rosette.^[5] It inhabits hills, terraces and slopes in the semi-arid Tamaulipan mezquital.^[6]

Agave longiflora
Conservation status
Imperiled  (NatureServe)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Asparagales
Family:	Asparagaceae
Subfamily:	Agavoideae
Genus:	Agave
Species:	A. longiflora
Binomial name
Agave longiflora (Rose) G.D.Rowley[2]
Synonyms[2]
Manfreda longiflora (Rose)Verh.-Will. Polianthes runyonii Shinners Runyonia longiflora Rose