Rogers Trees and Shrubs   The trees and shrubs
Home
The trees and shrubs
Leaf index
Advanced key
talk trees and shrubs
planting and cultivation
trees and shrubs origin
Buy photos
Books

Glossary
About us
Register
Help
    
discover our mushroom apps

Iochroma australis.   Click a photo to enlarge it.   back to list

synonyms: Acnistus australis, Dunalia australis, Iochroma the genus
Iochroma australe Tree
Ref No: 14762
Buy this image
Iochroma australe1168 Tree
Ref No: 14763
Buy this image
Iochroma australe1169 Tree
Ref No: 14764
Buy this image
tree/shrub type: Broad leaved trees and shrubs
foliage: Evergreen
size: Average shrubs
leaf type: Simple leaves
flowering period: Spring
leaf colour: Leaves green
plants for a purpose: Trees and shrubs with decorative blue/purple to black flowers

Iochroma Benth. (1835), in the family Solanaceae, contains around 20 species in cool parts of tropical South America.

Description Shrubs to 4m, often with weeping flowering branches. The leaves are alternate, deciduous or evergreen, simple, and often velvety-hairy. The flowers are purple or reddish, long-tubed, hanging in clusters. Sepals 5, joined at the base to form a bell-shaped calyx. Petals 5, joined for most of their length into a tube. Stamens 5, in the mouth or slightly exserted from the flower. Ovary superior, 2-celled, with numerous ovules per cell; style 1, simple, slender. Pollination is by hummingbirds and insects, especially bumblebees. The fruits are fleshy berries, usually orange when ripe.

Key Recognition Features The tubular, purple or red flowers around 5cm long with a bell-shaped calyx.

Evolution and Relationships The 3 genera Iochroma, Dunalia Kunth, and Acnistus Schott are very similar, differing mainly in that Dunalia has shorter stamens with small cusps on the sides of the filaments. Acnistus is now restricted to 1 species, A. arborescens (L.) Schldl. from South America. The species shown here, I. australe Griseb., has been placed in all 3 genera at different times.

Ecology and Geography In rocky places and scrub in the lower parts of the Andes from Mexico to Argentina.

Comment Iochroma australe is an attractive and hardy shrub or small tree, which has become naturalised in a few places outside its native Argentina. The other species are more tender, but are widely grown in Mediterranean gardens and in areas of North America where there is little or no frost.


Iochroma australis Griseb., syn. Dunalia australis (Griseb.) Sleumer, Acnistus australis (Griseb.) Griseb. (Solanaceae) An evergreen or semi-evergreen shrub with pendent violet-purple flowers, native of N Argentina, growing in montane forest to about 3000m, flowering in late spring and early summer. Spreading shrub to 3m or more, developing long leafy branches. Leaves 510cm, elliptic or oblong, rather leathery. Flowers 36cm long, narrowly trumpet-shaped with 5 shallow triangular lobes, borne in small clusters in the upper leaf axils. Min. -5C or lower in a sheltered site. A most elegant shrub when the arching branches are hung with flowers. Iochroma cyaneum (Lindl.) Green, differs mainly in the shorter stamens, each with a pair of lateral cusps from the filament.

Members' images and comments

Click here to upload and share your photos and comments about this plant (JPEG only please).
By uploading images and text you hereby warrant that you are the legal owner of this material and agree, without limitation, to permit Rogers Plants Ltd to publish such images and text on this Rogers Plants website. Rogers Plants Ltd reserves the right to remove any member images or text at its sole discretion.
© 2001-2014 Rogers Plants Ltd. All rights reserved. The text and photographs on this site may not be reproduced in any form without the written permission of Rogers Plants Ltd. Please see our Terms and Conditions. Site by Glide Technologies Ltd.
Don't forget to visit our sister sites RogersMushrooms and RogersRoses.