Tenaris
(said to be the native name in South Africa). ORD. Asclepiadeae. A small genus (two species) of greenhouse, erect, slender, nearly simple, perennial herbs, natives of South Africa. Flowers pink or whitish, cymose; calyx deeply five-cleft, the lobes acute; corolla tube shortly campanulate, the lobes five, long, linear-spathulate; coronal scales ten, affixed to the new staminal tube; stamens affixed at the base of the corolla, the filaments connate in a short tube. Leaves opposite, narrow-linear. Only one of the species has been introduced. For culture, see Ceropegia. T. rostrata (beaked). fl., corolla whitish, densely covered towards the base with minute, purple dots, 3/4in. in diameter, rotate; outer corona of five small, yellowish lobes; inner one of five pinkish segments; peduncles one (or two ?) flowered, three to five lines long. l. about four pairs, distant, linear, acute, 2in. to 3in. long, 1/8in. broad, arched. Stem 1 1/2ft. high, slender. East tropical Africa, 1885.