Monograph of the western Indian Ocean genus Paracephaelis (Rubiaceae - Pavetteae), with description of thirteen new species
Bremek., Repertorium Novarum Specierum Regni Vegetabilis
(A. Rich. ex DC.) De Block. A. Flowering
Fig. 1. Flowers, fruits and stipules of Paracephaelis Baill. A–D. Inflorescences. E–H. Fruits. I–J. Stipules. K–L. Infrutescences. A, E, I. P. cinerea (A.Rich. ex DC.) De Block. B. P. pauciflora De Block sp. nov. C, G. P. saxatilis (Scott Elliot) De Block. D. P. sericea (Arènes) De Block. F. P. ranirisonii De Block sp. nov. H. P. tiliacea Baill. J–K. P. capitulifera De Block sp. nov. L. P. russata De Block sp. nov. Photographs: P. De Block (B–E, G, I–L); S. Dessein (A, H); L. Gautier (F).
Fig. 2. Overview of the placentation in Paracephaelis Baill. A–K. Abaxial views of placenta and ovules. A’. Adaxial view of placenta and ovules with zone of attachment of the placenta indicated. A–C. Typical placentation type of Paracephaelis, with many ovules arranged at the periphery of the placenta.D–E. Idem, with fewer ovules. F–H. Idem, but ovules restricted to the top of the placenta. I. Typical placentation type in P. cinerea (A.Rich. ex DC.) De Block, P. comorensis De Block sp. nov. and P. trichantha (Baker) De Block. J–K. Idem, with fewer ovules. Drawn by Mr A. Fernandez. From Perrier de la Bâthie 13452 (P. tiliacea Baill., A, A’); Pervillé 633 (P. tiliacea Baill., B); Capuron 23451-SF (P. longipedicellata De Block sp. nov., C); McPherson et al. 14875A (P. saxatilis (Scott Elliot) De Block, D); Gautier et al. 4188 (P. gautieri De Block sp. nov., E); De Block et al. 1280 (P. bardotiae De Block sp. nov., F); De Block et al. 1048 (P. russata De Block sp. nov., G–H); Capuron 23073-SF (P. cinerea (A.Rich. ex DC.) De Block, I); Barthelat et al. 732 (P. comorensis De Block sp. nov., J); and Labat & Pascal 2887 (P. comorensis De Block sp. nov., K).
Fig. 8. Paracephaelis cinerea (A.Rich. ex DC.) De Block. A. Flowering and fruiting branches. B. Flower. C. Flower bud. D. Longitudinal section through ovary and calyx. E. Bracteole, ovary and calyx. F. Longitudinally opened flower with style and stigma. G. Anther. H. Fruit. I. Seed.Adapted from Drake del Castillo (1897: pl. 421).
Fig. 23. Distribution maps of Malagasy species of Paracephaelis. A. P. aristata De Block sp. nov. (black dot), P. bardotiae De Block sp. nov. (blue dot), P. capitulifera De Block sp. nov. (green dot), P. gautieri De Block sp. nov. (red dot), and P. grandifructa De Block sp. nov. (yellow dot). B. P. cinerea (A.Rich. ex DC.) De Block (black dot). C. P. longipedicellata De Block sp. nov. (black dot), P. orientalis De Block sp. nov. (blue dot), P. pauciflora De Block sp. nov. (green dot), P. ranirisonii De Block sp. nov. (red dot), and P. seyrigii De Block sp. nov. (yellow dot). D. P. russata De Block sp. nov. (black dot), P. sambavensis De Block sp. nov. (blue dot), P. saxatilis (Scott Elliot) De Block (green dot), P. sericea (Arènes) De Block (red dot), and P. tiliacea Baill. (yellow dot).
II District & Andriamahay & Rakotoarisoa
d'Andranomadiro & de la Saharenana & de l'Irodo & Capuron
Analamera & De Block & Rakotonasolo & Randriamboavonjy
Analamera & Irodo & De Block & Rakotonasolo & Randriamboavonjy
De Block & Rakotonasolo & Randriamboavonjy
Sadjoavato & Saharenana & d'Andranomadiro & Schatz & Ratovoson & Riri Guittou
Sadjoavato & Saharenana & Schatz & Ratovoson & Guittou
Bremer & Mouly & Ravelonarivo & Kainulainen
de Solaniampilana-Maroadabo & Bremer & Mouly & Kainulainen & Mariano
Nosibe & Sahaka & Rabevohitra & Rabenantoandro & Razakamalala
Nosibe & Anjiabe & Rabevohitra & Rabenantoandro & Razakamalala
Rakotonasolo & Randriamboavonjy & Letsara & Bone & Andriantiana
Razakamalala & Rabevehitra & Rakotomamonjy
Ankarafantsika & Tsaramandroso & Tsilizy & I District
de Majunga & Perrier de la Bathie & II District
Analananbe & Andrafiborizina & Rakotonasolo
Ankerika & Andohanakerika & Rakotonasolo
Groeninckx & Rakotonasolo & Dessein & De Block
Itremo & Rakotonasolo & Moat & Rakotoarinivo & Rakotoarisoa & Bachman & Couch
Analabe & Randriamboavonjy & Rajaovelona & Andriamilanto
Rakotonasolo & Ratovoson & Iso Fiadana & Rasolondrainy & Constant Mbola
Andohahela & Ankazofotsy & Randriamampionona
Antsoa & Antanamary & Androsy & Razakamalala
Betioky & Ampanihy & De Block & Dessein & Groeninckx & Rakotonasolo
de Mikea & Ankilimihavotse-Ankindranoke & Basibasy & Ranaivojaona
de la Mananadabo & l'Analavelona & Capuron
Randrianarivony & Rakotoarivony & Helison & Heriman & Rehary
Randrianarivony & Ramarosandratana & Andriamihajarivo & Makabe
Mahaboboka & Ambinanintelo & d'Analavelona & d'Andohaniankokoky & Ankokoky & Randrianarivony & Rakotoarivony & Helison & Heriman & Rehary & Rebesa
de Kirindi & d'Andalandahalo & Davis & Rakotonasolo & Wilkin
Kirindi & De Block & Rakotonasolo & Groeninckx & Dessein
Conoco & De Block & Rakotonasolo & Groeninckx & Dessein
De Block & Dessein & Groeninckx & Rakotonasolo
Belges & Groeninckx & Rakotonasolo & Dessein & De Block
Kainulainen & Razafimandimbison & Razafindraibe & Wikstrom
Razakamalala & Randrianaivo & Rakotondrasaona
Bemanonga & Marofandilia & Kirindy & de Kirindy & Razakamalala & Randrianaivo & Rakotondrasaona