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8 results for “Romulea”
Fig. 2 in Floral biology of Romulea (Iridaceae: Crocoideae): a progression from a generalist to a specialist pollination system
Fig. 2. — Principal flower types in Romulea and their pollinators: A, flower of R. tortuosa with a visiting honey bee, Apis mellifera; B, R. monadelpha with the hopliine beetle Clania glenlyonensis; C, plant and flowers of R. hantamensis with the long proboscid fly Prosoeca sp. 1.
Fig. 1 in Floral biology of Romulea (Iridaceae: Crocoideae): a progression from a generalist to a specialist pollination system
Fig. 1. — Vegetative and floral morphology of Romulea: A, R. lilacina, acaulescent habit with bell-shaped flower, detail of stamens with style branches emerging from between the anthers and papillate-hairy filaments; B, R. discifera, caulescent habit with bell-shaped flowers, the stamens enclosed in the floral cup and detail of stamens showing papillate-hairy filaments; C, R. alba, subacaulescent habit and tubular flowers with patent tepals and stamens fully exserted from the tube.
FIGURE 3 in Rediscovery and taxonomic analysis of Romulea melitensis (Iridaceae) from the Maltese islands
FIGURE 3. Flower features of ×Romulea melitensis interpreted as intermediate between R. variicolor and R. columnae. a. Variation of the bracteoles of composed of a wide hyaline margin and a central subherbaceous keel varying from a hyaline texture (e.g. C202d) as in R. columnae to a rather strong herbaceous character (e.g. C202a) as in R. variicolor. b. Variation of the abaxial surface of perianth of ×Romulea melitensis. c. Comparison of a dissected corolla of Romulea variicolor (left), R. melitensis (centre) and R. columnae (left) found growing in the same locus at an arid clearing at Selmun, Mellieħa.
FIGURE 2 in Rediscovery and taxonomic analysis of Romulea melitensis (Iridaceae) from the Maltese islands
FIGURE 2. Colour variation of tepals in ×Romulea melitensis a. Specimen B302h with the under tepals having a dark violet colour, while the adaxial surface is much lighter in colour. b. Specimen E217a with an abnormal deep violet colour in the abaxial surface of the outer tepals. c. Specimen D129b (in situ) showing old flowers turning dark violet externally and compared with a similar corolla from the type specimens (T2). d. Comparison of the tepals from a plant collected in situ (left) and type specimen (right) showing similar shape and colours composed of a yellow throat, a light violet tepal fading above and with a dark midvein. e. Dissected flower two days after anthesis showing tepals that shrunk laterally and measuring 1.0–1.8 mm. f Corolla of specimen A213a with a medium-light violet colour, yellow throat and dark band and veins over the throat.
FIGURE 6 in Rediscovery and taxonomic analysis of Romulea melitensis (Iridaceae) from the Maltese islands
FIGURE 6. Three Romulea populations photographed from Clapham Junction, Dingli (22-Feb-2020), showing fruiting of R. variicolor (A), R. columnae (B) while in × R. melitensis there are no signs of fruit development (C).
FIGURE 1 in Rediscovery and taxonomic analysis of Romulea melitensis (Iridaceae) from the Maltese islands
FIGURE 1. The nine plants of the type specimen of × R. melitensis on two herbarium sheets G00370314 (left) and G00370315 (right).
FIGURE 4 in Rediscovery and taxonomic analysis of Romulea melitensis (Iridaceae) from the Maltese islands
FIGURE 4. Romulea ×melitensis reproductive structures a. Stamens and style (left: D217b, right: A210b) showing subglabrous pilosity at the base of the filaments and a scarce production of pollen. b. Pollen grains (E217a): low-resolution image showing shrivelled and fragmented pollen of irregular size; high-resolution image showing translucent empty grains.
FIGURE 5 in Rediscovery and taxonomic analysis of Romulea melitensis (Iridaceae) from the Maltese islands
FIGURE 5. Typical habitat of × R. melitensis co-occurring with R. columnae and R. variicolor at a footpath in Rdum Majjiesa (Majjistral Park), Mellieħa, 11-Feb-2020. Lower crop out images are up to scale with each other.
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