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!Tritoniopsis revoluta (Burm. f.) 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: Candollea 47: 364. 1992. (Candollea) Name publication detail
 

Project Name Data (Last Modified On 7/22/2016)
Acceptance : Accepted
Taxon Profile     (Last Modified On 7/22/2016)
Description: Plants 200–400(–500) mm high. Corm 35–65 mm diam.; tunics of densely matted fibres, with long fibrous collar. Stem slender to moderately stout, suberect, simple or rarely with 1 or 2 short suberect branches, 2–3 mm diam. Basal leaves 1 to 3, dry at flowering, blades lanceolate to linear-lanceolate, 150–320 × 5–20 mm, acuminate, (2)3–5-veined, narrowed below (not pseudopetiolate); cauline leaves 4 or 5, lowermost small, leaf-like or subulate and clasping, upper 1 or 2 bract-like, dry and reddish brown. Spike moderately densely or laxly 310- flowered, 20–160 mm long, lateral spikes 1–3-flowered; bracts dry, brown, leathery, lanceolate, (12–)15–50 mm long, acute to acuminate, inner up to 9 mm longer than outer. Flowers zygomorphic, pale to deep salmon pink or mauve-pink, lower tepals with red median streak or line, unscented; perianth tube subcylindric or widening slightly and evenly from near base, straight or slightly curved, (20–)40–70 mm long; tepals unequal, dorsal arched over stamens and recurved distally, oblanceolate, 25–40 × 6–10 mm, obtuse or subacute, others suberect but recurved in distal half, oblanceolate-spathulate, 18–35 × 4–8 mm, lower 3 joined for 4–8 mm. Filaments arched, later suberect, 15–20 mm long; anthers 8–10 mm long purple, with recurved bipartite apiculus 1.5–2 mm long. Style (30–)60–90 mm long, dividing shortly below or beyond anther tips, branches 5–7 mm long. Capsules inflated, ellipsoid or ovoid, 20–30 × 10–12 mm. Seeds up to 8 mm long, usually broadly winged on angles at base and apex and narrowly so laterally. Flowering time: Mar.–May.
Country: South Africa
South African Province: Western Cape
Distribution and ecology: scattered along the lower slopes of the southern coastal and inland mountains of Western Cape, from Bredasdorp and the Potberg, along the Langeberg from Tradouws Pass to Herbertsdale and on the southern slopes of the Swartberg between Ladismith and Oudshoorn; on clay or loamy soils in renosterveld or fybos, up to 1 000 m.
Diagnosis: Tritoniopsis revoluta isrecognized by the long-tubed pink flowers with slender perianth tube (25–)40–70 mm long and ± as long as or usually much longer than the dorsal tepal, 20–40 mm long, and the long bracts, the outer (12–)15–50 mm long. Populations from the coastal lowlands between Bredasdorp and Potberg and from the Swartberg have smaller flowers with shorter tubes 20–35 mm long while those from the western and eastern Langeberg consistently have the largest flowers, with tubes 50–70 mm long. Populations from Gysmanshoek in the central Langeberg are variable for tube length. The marked inter-population variation in tube length appears to represents adaptation to local pollinator faunas.
Pollination: long-tubed forms are pollinated by the long-proboscid flies Prosoeca ganglbaurii and P. longipennis and shorter-tubed forms at least partially by bees but probably also by local long-proboscid flies.

 


 

Specimens whose coordinates are enclosed in square brackets [ ] have been mapped to a standard reference mark based on political units.
 
 
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