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Figure 7 in YELLOW WATER LILIES (NUPHAR, NYMPHAEACEAE) IN GREAT BRITAIN: A NEW HYBRID, A REAPPRAISAL OF RECORDS, AND A REVISED STATUS OF N. ADVENA

Figure 7. Sepals of: A, Nuphar advena from NA1 population, Spottiswoode Loch; B, Nuphar × porphyranthera from NH8 population, Oulten Park (left), and NH2 population, Godstone (right); C, N. lutea (no population code), Norbotten, Sweden. Scale bars are approximate (no measurements of the photographed features were taken). Photographs: R. V. Lansdown.

Figure 6. A in YELLOW WATER LILIES (NUPHAR, NYMPHAEACEAE) IN GREAT BRITAIN: A NEW HYBRID, A REAPPRAISAL OF RECORDS, AND A REVISED STATUS OF N. ADVENA

Figure 6. A, Petiole shape of Nuphar advena from NA1 population, Spottiswoode Loch. B, Petiole shape of Nuphar × porphyranthera from NH8 population, Oulten Park (left); NH6 population, Shropham Ponds (centre); and NH1 population, West Hoathly (right). C, Petiole shape of Nuphar lutea (no population code), Elterwater. Scale bars are approximate (no measurements of the photographed features were taken). Photographs: R. V. Lansdown.

Figure 4 in YELLOW WATER LILIES (NUPHAR, NYMPHAEACEAE) IN GREAT BRITAIN: A NEW HYBRID, A REAPPRAISAL OF RECORDS, AND A REVISED STATUS OF N. ADVENA

Figure 4. Habit of Nuphar × porphyranthera, showing decaying leaves in July 2020, from NH4 population, Painshill Park. Photograph: R. V. Lansdown.

Figure 2. A in YELLOW WATER LILIES (NUPHAR, NYMPHAEACEAE) IN GREAT BRITAIN: A NEW HYBRID, A REAPPRAISAL OF RECORDS, AND A REVISED STATUS OF N. ADVENA

Figure 2. A, Flower of Nuphar × porphyranthera with some stamens removed, from NH8 population, Oulton Park, June 2021. B, Sterile stamens of Nuphar × porphyranthera: filament length (fl), anther length (al). C, Fertile stamens of Nuphar advena. Scale bars are approximate (no measurements of the photographed features were taken). Photographs: R. V. Lansdown.

Figure 3 in YELLOW WATER LILIES (NUPHAR, NYMPHAEACEAE) IN GREAT BRITAIN: A NEW HYBRID, A REAPPRAISAL OF RECORDS, AND A REVISED STATUS OF N. ADVENA

Figure 3. Anther and filament lengths of Nuphar lutea (n = 30 from 3 populations), N. advena (n = 10 from 1 population) and their hybrid Nuphar × porphyranthera (n = 100 from 10 populations).

Figure 8 in YELLOW WATER LILIES (NUPHAR, NYMPHAEACEAE) IN GREAT BRITAIN: A NEW HYBRID, A REAPPRAISAL OF RECORDS, AND A REVISED STATUS OF N. ADVENA

Figure 8. Flowers and stamens of: A, Nuphar advena from NA1 population, Spottiswoode Loch; B, Nuphar × porphyranthera from NH8 population, Oulten Park (left), and NH1 population, West Hoathly (right); C, N. lutea (no population code), Elterwater (left) and Pop1 population, Ashtead (right). Scale bars are approximate (no measurements of the photographed features were taken). Photographs: R. V. Lansdown.

Figure 5 in YELLOW WATER LILIES (NUPHAR, NYMPHAEACEAE) IN GREAT BRITAIN: A NEW HYBRID, A REAPPRAISAL OF RECORDS, AND A REVISED STATUS OF N. ADVENA

Figure 5. Nuphar × porphyranthera: A, leaf shape from NH12 population, Auchnagairn House; B, leaf shape from NH6 population, Shropham Ponds; C, habit from NH12 population in drying-out pond, Auchnagairn House. Photographs: R. V. Lansdown.

Figure 10 in YELLOW WATER LILIES (NUPHAR, NYMPHAEACEAE) IN GREAT BRITAIN: A NEW HYBRID, A REAPPRAISAL OF RECORDS, AND A REVISED STATUS OF N. ADVENA

Figure 10. Nuphar lutea leaves: A, in July 2021 with a high proportion of emergent leaves, from Pop5 population, Carlingwark Loch, England; B, in August 2020 with a mixture of emergent and floating leaves, from Pop1 population, Ashtead Park, England; C, in July 2021 with submerged and floating leaves, from (no population code) Elterwater, England. Photographs: R. V. Lansdown.

Figure 1 in YELLOW WATER LILIES (NUPHAR, NYMPHAEACEAE) IN GREAT BRITAIN: A NEW HYBRID, A REAPPRAISAL OF RECORDS, AND A REVISED STATUS OF N. ADVENA

Figure 1. Location of the 26 Nuphar advena records in the Botanical Society of Britain & Ireland database. Populations sampled for genetic analysis are marked with a triangle.

Figure 9 in YELLOW WATER LILIES (NUPHAR, NYMPHAEACEAE) IN GREAT BRITAIN: A NEW HYBRID, A REAPPRAISAL OF RECORDS, AND A REVISED STATUS OF N. ADVENA

Figure 9. Habit of Nuphar advena, showing leaves in July 2021, from NA1 population, Spottiswoode Loch. Photograph: R. V. Lansdown.

FIGURE 11 in Revised Species Delimitation in the Giant Water Lily Genus Victoria (Nymphaeaceae) Confirms a New Species and Has Implications for Its Conservation

FIGURE 11 | Victoria cruziana (A) bud whole, (B) bud L.S., (C) bud from above, (D) first night flower, (E) first night flower L.S., (F) second night flower, (G) second night flower LTS, (H) habit, and (I) seed. (A–D,F,G) (photo LTS), (I) (CM) cultivated RBG Kew, (D,E) cultivated Denver Botanic Gardens (LTS).

FIGURE 10 in Revised Species Delimitation in the Giant Water Lily Genus Victoria (Nymphaeaceae) Confirms a New Species and Has Implications for Its Conservation

FIGURE 10 | Victoria boliviana sp. nov. (A) bud whole, (B) bud L. S., (C) bud from above, (D) first night flower, (E) first night flower L. S., (F) second night flower, (G) second night flower L.S., (H) habit, and (I) seed. (A–G) (LTS), (I) (CM) cultivated RBG Kew, H (CM) Beni, Bolivia.

FIGURE 9 in Revised Species Delimitation in the Giant Water Lily Genus Victoria (Nymphaeaceae) Confirms a New Species and Has Implications for Its Conservation

FIGURE 9 | Victoria amazonica (A) bud whole, (B) bud L.S., (C) bud from above, (D) first night flower, (E) first night flower L.S., (F) second night flower, (G) second night flower LTS, (H) habit, and (I) seed. (A–H) (LTS) and (I) (CM) cultivated RBG Kew.

FIGURE 7 in Revised Species Delimitation in the Giant Water Lily Genus Victoria (Nymphaeaceae) Confirms a New Species and Has Implications for Its Conservation

FIGURE 7 | (A) Chronogram tree from StarBEAST2 representing molecular dating analysis of splits between V. amazonica, V. cruziana, and V. boliviana with confidence intervals highlighted. (B) Visual representation of plastid structure of V. boliviana assembled using GetOrganelle, with genomic locations of diagnostic characters indicated. Details of polymorphisms (indels) – in the context of multi plastid alignments – displayed within insets.

FIGURE 5 in Revised Species Delimitation in the Giant Water Lily Genus Victoria (Nymphaeaceae) Confirms a New Species and Has Implications for Its Conservation

FIGURE 5 | Victoria boliviana sp. nov. (A) habit, (B) abaxial leaf, (C) leaf rim profiles, (D) bud, whole and LS, (E) flower prickles, (F) first night flower, (G) second night flower, (H) carpellary appendages and tepal, staminode attachments; (I) ovule, whole and LS, (J) stamens, (K) seed. (All from material cultivated at RBG Kew). Illustration: Lucy T. Smith.

FIGURE 6 in Revised Species Delimitation in the Giant Water Lily Genus Victoria (Nymphaeaceae) Confirms a New Species and Has Implications for Its Conservation

FIGURE 6 | Victoria cruziana (A) habit, (B) abaxial leaf, (C) leaf rim profiles, (D) bud, whole and LS, (E) flower prickles, (F) first night flower, (G) second night flower, (H) carpellary appendages and tepal, staminode attachments; (I) ovule, whole and LS, (J) stamens, (K) seed. (A–E, G–K, cultivated at RBG Kew, F cult. Denver Botanic Gardens). Illustration: Lucy T. Smith.

FIGURE 4 in Revised Species Delimitation in the Giant Water Lily Genus Victoria (Nymphaeaceae) Confirms a New Species and Has Implications for Its Conservation

FIGURE 4 | Victoria amazonica (A) habit, (B) abaxial leaf, (C) leaf rim profiles, (D) bud, whole and LS, (E) flower prickles, (F) first night flower, (G) second night flower, (H) carpellary appendages and tepal, staminode attachments; (I) ovule, whole and LS, (J) stamens, (K) fruit, (L) seed. (All from material cultivated at RBG Kew). Illustration: Lucy T. Smith.

FIGURE 1 in Revised Species Delimitation in the Giant Water Lily Genus Victoria (Nymphaeaceae) Confirms a New Species and Has Implications for Its Conservation

FIGURE 1 | Wild populations of (A) Victoria amazonica (Peru, Loreto), (B) V. boliviana sp. nov. (Bolivia, Beni) and (C) V. cruziana (Argentina, Chaco). (Photo Credits: (A) Laurel Allen, iNaturalist ID 821386. (B) Carlos Magdalena. (C) Fernanda Alarcón, iNaturalist ID. 19516477).

FIGURE 3 in Revised Species Delimitation in the Giant Water Lily Genus Victoria (Nymphaeaceae) Confirms a New Species and Has Implications for Its Conservation

FIGURE 3 | Line drawing comparing flower and seed morphology in: Victoria amazonica (A–C), V. boliviana sp. nov. (D–F), and V. cruziana (G–I); flower bud whole and in longitudinal section showing abaxial surface of outer tepals, bud profile, stigmatic chamber, carpellary appendage and prickle morphology; seeds. (cultivated at RBG Kew) Illustration: Lucy T Smith.

FIGURE 2 in Revised Species Delimitation in the Giant Water Lily Genus Victoria (Nymphaeaceae) Confirms a New Species and Has Implications for Its Conservation

FIGURE 2 | Flower morphology and terms, using a Victoria amazonica second-night flower in longitudinal section for reference (above) and a fully dissected flower (below). (A) Ovary, (B) stigmatic surface and stigmatic chamber, (C) locule and ovules, (D) floral apex, (E) outer tepals, (F) inner tepals, (G) outer staminodia, (H) stamens, (I) inner staminodia, (J) carpellary appendages. Illustration and photo: Lucy T. Smith.