South and west Texas, south New Mexico and the Sonoran Desert of Arizona and California
Varied; plains, grassland, woodland; sea level to 8,000 feet
On stalks, linear, lanceolate or triangular, up to 1.5 inches long and 1.2 inches across
February to November
The profusely branched stems of acleisanthes longiflora are long and leafy, sometimes woody at the base, usually climbing or prostrate, but sometimes upright. Stems have a sparse covering of tiny, white, head-shaped hairs, more evident on new growth. Leaves are colored grey-green and are somewhat variable in shape, but generally a little longer than wide, blunt-pointed at the tip, with slightly wavy margins. Leaves are usually hairless but may also have fine hairs.
Flowers are solitary; they have a very slender, corolla-like perianth with a tube up to 6 inches long, sometimes faintly covered with hairs, opening to five fused lobes, overall about one inch in diameter. The tips of the lobes protrude slightly, and have a tuft of hairs. Included within the mouth of the tube are five stamens - white or pinkish filaments and green anthers. The style is exserted, held well above the anthers.