The following Participating Institutions are custodians for this species in the CPC National Collection:
San Antonio Botanical Garden
Cincinnati Zoo & Botanical Garden
The conservation of Manfreda longiflora is fully sponsored.
Cindy Barrett contributed to this Plant Profile.
Manfreda or Runyon's huaco is a small fleshy plant that looks a lot like an aloe. Its leaves have interesting purplish-brown markings. Also called Tuberose because of its fragrant white to pink flowers which bloom on a flower stalk that sometimes reaches a height of 30 inches. The Mexican people call any plant used to treat snakebite "huaco". The term "huaco" comes from the huaco bird, which was able to cure itself after a snakebite. There are only 4 known populations. Threats to this species include highway and pipeline construction, maintenance, overgrazing, brush clearing, and non-native grasses. Low population numbers and low numbers of individuals could lead to extinction through any number of chance events. (Damude and Poole 1990).
Distribution & Occurrence
Warm, semi-arid Tamaulipan thornland on terraces, slopes and hills. (Damude and Poole 1990)
|In 1990 there were only four populations known, containing a total of 60 plants, none of which were seedlings or juveniles. (Damude and Poole 1990)|
Conservation, Ecology & Research
Possible moth-pollination (Verhoek-Williams 1975)
Response to disturbance
Seed dispersal and seedling recruitment
Monitoring and Surveys
Seed collection for National Seed Storage Lab
Rose, J.N. 1922. Runyonia longiflora. Addisonia. 7: 39-40.
Shimmers, L.H. 1966. Texas Polianthes, including manfreda (Agave subgenus manfreda) and runyonia (Agavaceae). Sida. 2, 4: 333-338.
Weber, W.A.; Wittmann, R.C. 1996. Colorado flora: Eastern slope. Niwot, Colorado: Univ. Press of Colorado. 524p.