Table 2 in Adaptive radiation of pollination mechanisms in Sparaxis (Iridaceae: Ixioideae)

Table 2. — Floral characteristics of Sparaxis species arranged according to flower type. Measurements of the perianth tube are for the lower cylindrical portion that excludes all but an insects proboscis. + = presence, - = absence, n/a = data not available, trace indicates nectar volume too little to measure volumetrically. SpeciesFlower shapeFlower colorLower tube (mm)Tube openNectarSelf incompatibleFlowering timeS. auriculatafunnelviolet and yellowca.18no+yesSep.S. bulbiferabowlcream12-16yes+noSep.S. caryophyllaceafunnelviolet and yellowca. 20no+yesSep.S. eleganssalversalmon and purple6-8no+noAug.-Sep.S. fragranssalverpale yellow or buff6-8notracenoAug.-Sep.S. galeatafunnelmauve and yellowca. 15yes–yesJuly-Aug.S. grandiflorasalverwhite, yellow or purple10-14notracenoAug.-Sep.S. maculosasalveryellow, black centerca. 2.5non/an/aSep.S. metelerkampiaetubedark purple45-50yes+noAug.-Sep.S. parviflorafunnelcream and yellowca. 8notracenoAug.-Sep.S. pillansiibowlrose pink and yellow7-9notracenoOct.S. roxburghiitubemauve and yellow20-30yes+n/aSep.S. tricolorbowlscarlet, yellow and blackca. 8notracenoSep.S. variegatatubeviolet and yellow30-35yes+yesAug.-Sep.S. villosafunnelviolet and yellow15-18yes+noAug.-Sep.