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Figure 3 in Uvariopsis dicaprio (Annonaceae) a new tree species with notes on its pollination biology, and the Critically Endangered narrowly endemic plant species of the Ebo Forest, Cameroon

Figure 3 Uvariopsis dicaprio. (A) habit, cauliflorous inflorescences on trunk; (B) leafy branch, one season's growth; (C) inflorescence, showing pedicel articulations, bracts and bracteoles; (D) flower, with one petal removed to show the staminal dome; (E) detail of sparse hairs on abaxial petal surface; (F) stamen, different views; (G) junction of base of leaf with stem, showing dome-like axillary bud. All drawn from MacKinnon 51 (K) by MEG GRIFFITHS. Full-size DOI: 10.7717/peerj.12614/fig-3

Figure 4 in Uvariopsis dicaprio (Annonaceae) a new tree species with notes on its pollination biology, and the Critically Endangered narrowly endemic plant species of the Ebo Forest, Cameroon

Figure 4 Global distribution of Uvariopsis dicaprio, together with U. korupensis and U. submontana. Full-size DOI: 10.7717/peerj.12614/fig-4

Figure 1 in Uvariopsis dicaprio (Annonaceae) a new tree species with notes on its pollination biology, and the Critically Endangered narrowly endemic plant species of the Ebo Forest, Cameroon

Figure 1 Uvariopsis dicaprio. Cauliflorous inflorescences on trunk. Photo Lorna MacKinnon. Full-size DOI: 10.7717/peerj.12614/fig-1

Figure 2 in Uvariopsis dicaprio (Annonaceae) a new tree species with notes on its pollination biology, and the Critically Endangered narrowly endemic plant species of the Ebo Forest, Cameroon

Figure 2 Uvariopsis dicaprio. Trunk apex with cauliflorous flowers and canopy. Photo Lorna MacKinnon. Full-size DOI: 10.7717/peerj.12614/fig-2

Fig. 4 in Exacum alberti-grimaldii Wohlh. & Callm. (Gentianaceae), a new species endemic to northern Madagascar

Fig. 4. – An autogamous flower of Exacum alberti-grimaldii Wohlh. & Callm. showing the unwinged sepals. [Wohlhauser & Bongary 803] [Photo: S. Wohlhauser]

Fig. 3 in Exacum alberti-grimaldii Wohlh. & Callm. (Gentianaceae), a new species endemic to northern Madagascar

Fig. 3. – Flowering plant of Exacum alberti-grimaldii Wohlh. & Callm. with detail of a flower (framed). [Wohlhauser & Bongary 803] [Photo: S. Wohlhauser]

Fig. 2 in Exacum alberti-grimaldii Wohlh. & Callm. (Gentianaceae), a new species endemic to northern Madagascar

Fig. 2. – Exacum alberti-grimaldii Wohlh. & Callm. A. Habitus of a multi-umbellated individual; B. Flower; C. Habitus of an individual with single umbel; D. Stamen; E. Flower with calyx removed; F. Detail of an autogamous flower. [Wohlhauser & Bongary 803, G, TAN] [Drawing: Roger Lala Andriamiarisoa]

Fig. 1 in Exacum alberti-grimaldii Wohlh. & Callm. (Gentianaceae), a new species endemic to northern Madagascar

Fig. 1. – Map of Northern Madagascar with the locality of the type collection (star) within the proposed boundary of the Andrafiamena-Andavakoera protected area (Grey shadow, corresponding to remaining primary forest).

Fig. 17. Impatiens gesneroidea. A & C–E in Evolution of Impatiens (Balsaminaceae) in the Albertine Rift – The endemic Impatiens purpureoviolacea complex consists of ten species

Fig. 17. Impatiens gesneroidea. A & C–E, Detail of habit with flower in lateral view; B, Flower, frontal view. — A–E, Fischer 11021, Rwanda, Nyungwe National Park, Mt. Bigugu.

Fig. 16 in Evolution of Impatiens (Balsaminaceae) in the Albertine Rift – The endemic Impatiens purpureoviolacea complex consists of ten species

Fig. 16. Impatiens ×troupinii. A, Habit; B, Flower, frontal view; C, Flower, lateral view; D, Flower, lateral view (middle), with flowers of Impatiens purpureoviolacea (left) and I. gesneroidea (right). E & F, Detail of habit. — A–D, Fischer 13912, Rwanda, Rukarara; E & F, Rwanda, Uwinka, not collected.

Fig. 15. Impatiens versicolor. A in Evolution of Impatiens (Balsaminaceae) in the Albertine Rift – The endemic Impatiens purpureoviolacea complex consists of ten species

Fig. 15. Impatiens versicolor. A, Detail of habit; B, C & E, Flower, frontal view; D & F, Flower, lateral view. — A–F, Fischer 13390, Rwanda, between Pindura and Bweyeye.

Fig. 18. Impatiens superglabra. A & E in Evolution of Impatiens (Balsaminaceae) in the Albertine Rift – The endemic Impatiens purpureoviolacea complex consists of ten species

Fig. 18. Impatiens superglabra. A & E, Detail of habit; B, D & F, Flower, lateral view; C, Flower, frontal view. — A–F, Fischer 9765, Democratic Republic of the Congo, Kahuzi-Biéga National Park, Mt. Kahuzi.

Fig. 14. Impatiens elwiraurzulae. A in Evolution of Impatiens (Balsaminaceae) in the Albertine Rift – The endemic Impatiens purpureoviolacea complex consists of ten species

Fig. 14. Impatiens elwiraurzulae. A, Leaf, upper surface; B, Leaf, lower surface; C & D, Inflorescence; E, Flower; F, Lower sepal with spur; G, Dorsal petal; H & I, Lateral united petals; J, Bracts, pedicel, lateral sepals and anthers. — Scale bar: 1 cm. A–J, Dumbo & Dumbo s.n., Democratic Republic of the Congo, Mulolo.

Fig. 12. Impatiens ludewigii. A & C in Evolution of Impatiens (Balsaminaceae) in the Albertine Rift – The endemic Impatiens purpureoviolacea complex consists of ten species

Fig. 12. Impatiens ludewigii. A & C, Habit; B, Flowers (left, middle), right a flower of Impatiens purpureoviolacea; D, Flower, frontal view; E, Flower, lateral view. — A & C, Fischer 14500, Rwanda, Uwinka. B, D & E, Fischer 13914, Rwanda, Gisovu.

Fig. 13. A–D, Impatiens elwiraurzulae. A & C in Evolution of Impatiens (Balsaminaceae) in the Albertine Rift – The endemic Impatiens purpureoviolacea complex consists of ten species

Fig. 13. A–D, Impatiens elwiraurzulae. A & C, Flower, frontal view; B, Flower, lateral view; D, Flower showing only slightly coiled spur. E, Impatiens lotteri, detail of habit with flower. — A–D, Dumbo & Dumbo s.n., Democratic Republic of the Congo, Mulolo; E, Lotter 1542, Democratic Republic of the Congo, Ulindi River (Photo: M.C. Lotter).

Fig. 10. Impatiens urundiensis. A in Evolution of Impatiens (Balsaminaceae) in the Albertine Rift – The endemic Impatiens purpureoviolacea complex consists of ten species

Fig. 10. Impatiens urundiensis. A, Detail of habit; B, Flower, lateral view; C, Flower, frontal view; D, Flower, dorsal view. — A–D, Fischer 13301, Burundi, Kumuyange.

Fig. 9. Impatiens lutzmannii. A in Evolution of Impatiens (Balsaminaceae) in the Albertine Rift – The endemic Impatiens purpureoviolacea complex consists of ten species

Fig. 9. Impatiens lutzmannii. A, Habit; B, Flower, frontal view; C & D, Flower, lateral view. — A–D, Fischer 13002, Burundi, Bururi Forest Reserve.

Fig. 8. Impatiens kivuensis. A & C in Evolution of Impatiens (Balsaminaceae) in the Albertine Rift – The endemic Impatiens purpureoviolacea complex consists of ten species

Fig. 8. Impatiens kivuensis. A & C, Details of habit; B, Flower, frontal view; D, Flower, lateral view. — A–D, Fischer 13451, Burundi, Kibira National Park, Mt. Teza.

Fig. 6 in Evolution of Impatiens (Balsaminaceae) in the Albertine Rift – The endemic Impatiens purpureoviolacea complex consists of ten species

Fig. 6. Seeds of the Impatiens purpureoviolacea complex. A–C, Impatiens ludewigii: A & B, Seed; C, Detail of testa. D & E, Impatiens versicolor: D, Seed; E, Detail of testa. F & G, Impatiens gesneroidea: F, Seed; G, Detail of testa. — Scale bars: A, 600 μm; B, 500 μm; C, 100 μm; D, 400 μm; E, 70 μm; F, 400 μm; G, 100 μm. A–C, Fischer 13912, BG Bonn 37754; D & E, Fischer 13988, BG Bonn 34557; F & G, Fischer 11021, BG Bonn 32578.

Fig. 4 in Evolution of Impatiens (Balsaminaceae) in the Albertine Rift – The endemic Impatiens purpureoviolacea complex consists of ten species

Fig. 4. Seeds of the Impatiens purpureoviolacea complex. A & B, Impatiens purpureoviolacea: A, Seed; B, Detail of testa. C & D, Impatiens lutzmannii: C, Seed; D, Detail of testa. E & F, Impatiens urundiensis: E, Seed; F, Detail of testa. — Scale bars: A, 300 μm; B, 60 μm; C, 500 μm; D, 80 μm; E, 500 μm; F, 90 μm. A & B, Fischer 12958, BG Bonn 36240; C & D, Fischer 13002, BG Bonn 33486; E & F, Fischer 13301, BG Bonn 35170.