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!Tritonia flabellifolia (D. Delaroche) G.J. Lewis 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: Journal of South African Botany 7: 30. 1941. (J. S. African Bot.) Name publication detail
 

Project Name Data (Last Modified On 6/6/2016)
Acceptance : Accepted
Taxon Profile     (Last Modified On 10/17/2016)
Description: Plants 150–300(–450) mm high. Corm subglobose or depressed-globose, 10–20(–30) mm diam., tunics of fine-textured fibres, extending in a papery or fibrous neck. Stem ± erect below, inclined above, uppermost cauline leaf, simple or up to 3-branched. Leaves 6–10, drying and brown at flowering, stiffly suberect or arcuate, ± reaching to base of spike, linear to linear-lanceolate, 50–150(–200) × (2–)4–6(–10) mm, acuminate to attenuate, firm, with main vein moderately thickened, secondary veins prominent and lightly thickened, cauline leaves smaller, entirely sheathing. Spike inclined, sub-secund, 3–7-flowered; bracts dry and papery, translucent below, pale brownish densely speckled with dark reddish brown above, outer (10–)15–30(–50) mm long, acuminate or attenuate-aristate, rarely with 3 acuminate tips held close together, keeled with strong median vein, inner slightly to much shorter than outer, bifid-aristate. Flowers zygomorphic, white or cream to pale pink with darker veins, lower 3 tepals with median red streak or narrow yellow mark outlined with red, unscented; perianth tube cylindric or narrowly funnel-shaped, (30–)35–60(–65) mm long, slender and straight but curved outward and widening in upper 10–20 mm to 8–10 mm diam.; tepals obtuse, uppermost largest, often suberect, others spreading distally, dorsal obovate, 17–25 × 10–15 mm, remaining tepals oblanceolate, 13–20 × 5–8 mm, without calluses. Filaments unilateral, arcuate, (13–)15–18 mm long; anthers 5–7(–9) mm long, apiculate, purple; pollen purple. Style dividing shortly below or beyond anther apices, branches 4–7 mm long. Capsules obovoid, 7–10 mm long. Flowering time: early to mid-December.
Country: South Africa
South African Province: Western Cape
Distribution and ecology: endemic to the southern coastal districts of Western Cape, from Bot Rivier and the lower northern and southern slopes of the Riviersonderend Mtns to Bredasdorp and across the coastal plain south of the Langeberg as far east as Riversdale; on stony clay slopes and shale outcrops in renosterveld or transitional fynbos vegetation.
Diagnosis: distinguished from the florally similar Tritonia pallida from the Little Karoo and nearby by always lacking calluses on the lower tepals (sometimes also lacking in T. pallida), which are marked with a red or yellow and red streak, and by its stiffly erect, narrowly lanceolate-attenuate leaves, mostly 4–10 mm wide, and distinctive attenuate-aristate bracts mostly 15–40 mm long.

Long-tubed plants with the perianth tube (45–)50–65 mm long were distinguished by De Vos as var. major but these forms grade imperceptibly into typical var. flabellifolia with perianth tube 30–40 mm long. Both forms have the tube two or three times as long as the tepals. A population between Hawston and Botrivier at the extreme western edge of the range with pink flowers and relatively larger tepals was recognised as var. thomasiae by de Vos (1983). This taxon, still known only from the type collection and now probably extinct, was distinguished by its perianth tube, 30–45 mm  long and about 1.5 times as long as the tepals but we have measured the flowers on the type and find them to have the perianth tube twice as long as the tepals, thus no different from the typical variety.

Pollination: the flowers are pollinated by long-proboscid flies, including Philoliche rostrata (Tabanidae).

 


 

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