Larryleachia

Larryleachia marlothii

The Larryleachia are a genus of the subfamily Asclepiadoideae that the Hundsgiftgewächse family ( Apocynaceae ) has been allocated. The genus is named after Leslie (Larry ) C. Leach, one coming from England electrical engineer and self-taught botanist who worked in Zimbabwe and South Africa. His specialty was the succulent Asclepiadaceae and euphorbias.

Features

The genus Larryleachia includes small, branching at the base of stem succulent plants with few to numerous, erect to prostrate unreinforced and often woody stems. The mostly gray-green, cylindrical or clavate, bare drives are up to 15 cm, rarely up to 30 cm long and 2-6 cm in diameter. The flat, rounded and polygonal warts are arranged in 12 to 20 ribs. The less than 1 mm thick-set and conical leaves appear in an indentation near the top and warts are persistent.

The inflorescences are clustered near the shoot tip and show single or numerous, opening into a sequence or rarely at the same time individual flowers. The bald flower stem is 0.5 to 3 mm long and 1 mm in diameter. The sometimes ciliated and tapering 5 sepals are on a widened base and overlap slightly. The flat bell-shaped or deeply incised corolla reached a diameter of 5 rare, but usually 7 to 16 mm. The spread out flat, ovate triangular corolla lobes are pointed and strongly curved outward. The exterior is smooth and bare, the inside papillat or too bare. The Bald corona is formed 2-row. The interstaminale Nebenkrone is grown becherig at the base and their corners are apically truncate or split more or less deep. The 5 lobes staminale Nebenkrone is flattened dorsiventral and is located on the back of more or less square anthers. It is often connected at the back with a tag with the interstaminalen Nebenkrone. The stylus head is formed depressed trimmed and the pollinia are approximately horizontal. The tapered pointed to spindle-shaped fruits are bare and smooth. They are 2-9 cm long and 0.5 to 1 cm thick and are spread apart as a pair of bellows in an angle of 30 ° to 180 °. The brown or gray seeds are circular or pear-shaped and 3-7 mm in size. You are ventral side more or less concave, winged and brittle. On one side they are provided with a tuft of hair.

Occurrence

The occurrence of the genus extends from Namibia through Botswana to South Africa.

System

The species of the genus correspond to the species of the former genus glatttriebigen Trichocaulon.

• Larryleachia cactiformis ( Hook. ) Plowes
• Larryleachia marlothii ( N.E.Br. ) Plowes
• Larryleachia perlata ( Dinter ) Plowes
• Larryleachia picta ( N.E.Br. ) Plowes
• Larryleachia tirasmontana ( Plowes ) Plowes

From unclear assignment following ways, but which also belong to the genus are:

• Stapelia clavata Willd. (1798 ) Trichocaulon clavatum ( Willd.) H.Huber (1961 )
• Trichocaulon sociarum ACWhite & B.Sloane (1937 ) Leachia sociarum ( ACWhite & B.Sloane ) Plowes (1992 ) Leachiella sociarum ( ACWhite & B.Sloane ) Plowes (1992 ) Larryleachia sociarum ( ACWhite & B.Sloane ) Plowes (1997) Hoodia sociarum ( ACWhite & B.Sloane ) Halda (1998).