Under Construction

Streptosiphon

Streptosiphon hirsutus Mildbr.

Lucinda A. McDade and Carrie Kiel
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Containing group: Acantheae

Introduction

Streptosiphon is a genus of a single species that occurs in Tanzania. This plant is unique among Acantheae in having corollas that are resupinate (i.e., upside down) via twisting of the tube through 180 degrees.   Although our molecular data place Streptosiphon as part of the Schlerochiton clade, other characters suggest other affinities.  For example, like Crossandrella and some species of Crossandra, these plants have remarkable pollen that is shaped rather like a Toblerone chocolate bar:  triangular in polar view, elongate in equatorial view, and with open areas (caveae) at the 'points' of the triangle.  Our molecular data, as well as other morphological characters, strongly suggest that this pollen type has evolved several times in Acantheae.

Other Names for Streptosiphon hirsutus Mildbr.

Title Illustrations
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Scientific Name Streptosiphon hirsutus Mildbr.
Location Tanzania
Specimen Condition Dead Specimen
Copyright © 2006
Scientific Name Streptosiphon hirsutus Mildbr.
Location Tanzania
Reference Copenhagen Herbarum (C)
Specimen Condition Dead Specimen
Collection (C)
Collector Mwasumbi & Clarke
Copyright © 2006
Scientific Name Streptosiphon hirsutus Mildbr.
Location Tanzania
Specimen Condition Dead Specimen
Copyright © 2006
About This Page


Rancho Santa Ana Botanic Garden, Claremont, California, USA

Carrie Kiel
Rancho Santa Ana Botanic Garden

Correspondence regarding this page should be directed to Lucinda A. McDade at and Carrie Kiel at

All Rights Reserved.

Citing this page:

McDade, Lucinda A. and Carrie Kiel. 2006. Streptosiphon. Streptosiphon hirsutus Mildbr.. Version 13 September 2006 (under construction). http://tolweb.org/Streptosiphon_hirsutus_/52316/2006.09.13 in The Tree of Life Web Project, http://tolweb.org/

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