Thunbergia alata

Black-eyed Susan

The Black-eyed Susan ( Thunbergia alata ) is a native of East Africa plant from the family of the Acanthaceae ( Acanthaceae ).

Description

Black-eyed Susan is a counter-clockwise twining, annual cultivated herbaceous climber, reaching stature heights of 1 to 2 meters. The three and a half to three inches long and an inch wide leaves are triangular to heart-shaped. Their edges are wavy and hairy both surfaces. Leaf blades sit at up to six and a half inches long petioles that at the start one to one and a quarter millimeter thick stem axis at a distance of four and a half to 13 inches. At up to eight and a half inches long inflorescence axes hairy, usually orange-yellow flowers grow. The central two inches long corolla tube is deep purple. Each of the single flower has two triangular to oval, hairy bracts, which converge toward pointed tip. They are 18 to 20 millimeters long and nine to ten mm wide. The toothed calyx is about two millimeters long and has 15 to 17 pfriemförmige cloth. The Crown measures around four inches and has five two -centimeter bulges. The 16 to 18 millimeters long fruits are finely hairy. On approach, they have a diameter of seven millimeters. The four seeds measure 3.5 millimeters.

Pictures

Cup and pen

Flowers

Swell

• Berling, Rainer: Handbook garden, BVL Verlagsgesellschaft mbH, Munich 1997, ISBN 3-405-15098-1
• L. H. Durkee: Family # 200: Acanthaceae. In: William Burger ( ed.): Flora costaricensis. Fieldiana. Botany, new series, No. 18, Field Museum of Natural History, Chicago, USA, 1986, page 85