Home Iridaceae of sub-Saharan Africa
Genera
Species
Iridaceae in sub-Saharan Africa
Photo Gallery
Geographic Search
References
Search Builder
About this project
!Hesperantha truncatula Goldblatt Search in The Plant ListSearch in IPNISearch in Australian Plant Name IndexSearch in NYBG Virtual HerbariumSearch in Muséum national d'Histoire naturelleSearch in Type Specimen Register of the U.S. National HerbariumSearch in Virtual Herbaria AustriaSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical GardenAfrican Plants, Senckenberg Photo GallerySearch in Flora do Brasil 2020Search in Reflora - Virtual HerbariumSearch in Living Collections Decrease font Increase font Restore font
 

Published In: South African Journal of Botany 53(6): 461. 1987. (S. African J. Bot.) Name publication detail
 

Project Name Data (Last Modified On 6/6/2016)
Acceptance : Accepted
Taxon Profile     (Last Modified On 8/17/2016)
Description: Plants 100–160 mm high. Corm ± ovoid, 7–9 mm diam., asymmetric; tunics woody, imbricate, dark brown. Stem slender, unbranched, with short scale-like leaf in upper fourth. Leaves 3, lower 2 ± basal, blades plane, unusually short and ± obtuse, 12–20 × 4–8 mm, upper leaf sheathing lower 1/2 to 2/3 of stem, 40–80 mm long, slightly inflated. Spike 1–5-flowered; bracts green below, pale and membranous distally, 8–12 mm long. Flowers crepuscular, ± rotate, pale blue-purple, pale in throat and tube, outer tepals with broad purple streak on reverse; perianth tube straight, ± 7 mm long, cylindric, wider near apex; tepals subequal, narrowly ovate, 11–13 × ± 5 mm, spreading. Filaments weakly diverging, ± 3 mm long; anthers 5.5–6.0 mm long, ?yellow; pollen ?yellow. Style branches ± 7 mm long, ascending, ultimately reaching to ± middle of anthers in closed flower. Flowering time: September and probably also late August.
Type specimen: Jan H.J. Vlok - 662 - MO - (BC:MO-277858/A:3097984)
Country: South Africa
South African Province: Western Cape
Distribution and ecology: a narrow endemic of the northern foothills of the Klein Swartberg in Western Cape; occurring on south-facing clay slopes and currently known only from the Farm Vleiland.
Diagnosis: Hesperantha truncatula is distinguished by its unusually short, relatively broad basal leaves no more than 20 mm long and up to 8 mm wide. The upper, cauline leaf is slightly inflated, up to 80 mm long and sheaths the stem for its entire length. The stem also bears a short, scale-like bract shortly below the spike, a feature of H. pilosa and several related species, all of which differ from H. truncatula in their longer leaves, usually hairy or ciliate. The flowers, typical of the genus, have a relatively short perianth tube ± 7 mm long and tepals half again as long as the tube. Despite the blue-purple colour of the tepals the flowers are crepuscular, opening in the late afternoon and closing after dark.

 
 


 

Specimens whose coordinates are enclosed in square brackets [ ] have been mapped to a standard reference mark based on political units.
  • Africa & Madagascar     
 
 
© 2024 Missouri Botanical Garden - 4344 Shaw Boulevard - Saint Louis, Missouri 63110