Novitates Gabonenses 55. Manuscript Names and Drawings of the French

Home , Desbordesia, Galearia, Klaineanthus, Mildbraedia, Napoleonaea

Novitates Gabonenses 55. Manuscript names and drawings of the French botanist Louis Pierre (1833-1905):adiscussion about their validity with some examples of nomenclatural consequences for the Gabonese flora in particular

F.J. BRETELER Herbarium Vadense, Biosystematics Group, Wageningen University, Foulkesweg 37, NL-6703 BL Wageningen (Netherlands) [email protected]

ABSTRACT KEY WORDS Louis Pierre, The importance of the French botanist Louis P IERRE for Gabon, best known manuscript names, from his Flore forestière de la Cochinchine, is introduced. New species pub- validity, nomenclature, lished by him by means of the distribution of drawings by E. D ELPY are new combinations, considered effective and valid, but mostly not treated as such. Nomenclatural Euphorbiaceae, consequences, ranging from change of author to change of generic name, are Irvingiaceae, Scytopetalaceae, demonstrated from a few examples in the Euphorbiaceae, the Irvingiaceae, Gabon. and the Scytopetalaceae.

RÉSUMÉ Novitates Gabonenses 55. Noms manuscrits et dessins du botaniste français Louis Pierre (1833-1905) : une discussion de leur validité avec quelques exemples de conséquences nomenclaturales, en particulier pour la flore gabonaise. Si le botaniste français Louis P IERRE est renommé pour sa Flore forestière de la MOTS CLÉS Louis Pierre, Cochinchine, son importance pour la flore du Gabon est rappelée. En effet, les noms manuscrits, espèces nouvelles qu’il a effectivement publiées grâce à la distribution de validité, nomenclature, dessins exécutés par E. D ELPY sont valides, mais n’ont le plus souvent pas été combinaisons nouvelles, considérées comme telles par la suite. Il en résulte des conséquences nomen- Euphorbiaceae, claturales, variant d’une simple substitution d’auteur à un changement de Irvingiaceae, Scytopetalaceae, nom de genre, ici démontrées par quelques exemples pris dans les Gabon. Euphorbiaceae, Irvingiaceae et Scytopetalaceae.

ADANSONIA, sér. 3 • 2005 • 27 (2) : 325-335 © Publications Scientifiques du Muséum national d’Histoire naturelle, Paris. 325 Breteler F.J.

the important herbaria of that time (P IERRE 1896a: 1233; V AN T IEGHEM 1905: 289). These illustrations have been made by the artist E.D ELPY, by order of his employer P IERRE (e.g., Figs 2-5). These illustrations with analysis are accepted as equivalent to a description (G REUTER et al. 2000: Arts 42.3, 44.1) if published prior to 1 January 1908. They were copied and sent by D ELPY soon after he had finished the illustration, quite often together with a duplicate of the collection(s) on which they were based (P IERRE 1896a; V AN T IEGHEM 1905; pers. obs. in BR, K, P). Sometimes this distribution was followed by a full description in print by P IERRE, mostly published a few months later in the Bulletin mensuel de la Société lineénne de Paris in the years 1896- 1905 (C HEVALIER 1906; L EANDRI 1963) or were only mentioned there (P IERRE 1896a: 1233). A few have been published in his Flore forestière de la Cochinchine (P IERRE 1892), e.g., Fegimanra Pierre, Lavigeria Pierre. In some cases the same taxon was published by another botanist, who IERRE F IG. 1. — Portrait of Jean-Baptiste Louis P IERRE. took up P ’s name, and, consequently the taxon became known by the authors Pierre ex... So far there are very few cases in which taxono- INTRODUCTION mists have recognized the validity of P IERRE’s names, resulting in a correct author citation. The French botanist Jean-Baptiste Louis Dichapetalum integrum is mentioned in the Index P IERRE (Fig. 1) is best known from his magnum Kewensis as D. integrum Pierre ex Pellegr. opus Flore forestière de la Cochinchine (1880- (P ELLEGRIN 1913). D ELPY’s drawing of this taxon 1899) (C HEVALIER 1906; G AGNEPAIN 1906a, b; with details was distributed not later than L EANDRI 1963). However, the more than 1600 25March 1904, the official date of donation of entries in the Index Kewensis that bear his name as P IERRE’s entire collection to the Paris Herbarium author, either alone or with a co-author or as (see next paragraph). Therefore the publishing “Pierre ex...”, do not all concern taxa from Asia in author is P IERRE (B RETELER 1978: 31). Staphysora general or Indochina in particular. His taxonomic klaineana Pierre published in the same way and work on the flora of tropical Africa, especially of treated by H UTCHINSON (1912) as a nomen Gabon, is less well known, but of great impor- nudum was correctly taken up by L ÉONARD tance for that last country. Of the more than (1994: 14) as validly published and became 1600 taxa mentioned, c. 350 are African of which Maesobotrya klaineana (Pierre) J.Léonard. c. 200 are cited as from “Pierre ex...”, which indi- In Berlin, like in Kew, the conception may cates that P IERRE is not the publishing author. have been that such names, published by the dis- Some of these “Pierre ex...” names, especially tribution of a detailed drawing, are not valid. those by C HEVALIER (Pierre ex A.Chev.), are G ILG at least, and probably colleagues like P AX as indeed based on a manuscript name found on a well, were of this opinion. His comments (letter herbarium label, but some others are not. These to P IERRE in P, dated 27 February 1900; G ILG other names have in fact already been published 1908) on P IERRE’s Cerolepis (Flacourtiaceae) by P IERRE by means of the distribution of “illus- which name competed with his Camptostylus, is tration with analysis, of the taxa in question” to illustrative. A drawing of Cerolepis was sent to

326 ADANSONIA, sér. 3• 2005 • 27 (2) Nomenclatural aspects of the manuscript names of Louis Pierre

Berlin in 1896, but a description in print (P IERRE donated (25 March 1904) his entire collection of 1899) appeared well after the publication of 20850 specimens (L EANDRI 1963: 220) to the Camptostylus (G ILG 1898; see also H UL 1995). Paris Museum. It consisted of his own collection G ILG (1896) also argued that Jollydora Pierre, made in Indochina and the collections from published by the distribution of an illustration Gabon (then a part of French Congo) which he with analysis in 1895, was not valid, and so the had bought from his private funds. He was name was cited as Jollydora Pierre ex Gilg offered to sell these Gabonese collections to a rich (D URAND & J ACKSON 1899; B RUMMITT & amateur for a considerable amount of money P OWELL 1992), but also as Jollydora Pierre in both (G AGNEPAIN 1906a: xxvi), but P IERRE decided editions of the Flora of West Tropical Africa that they belonged in the Paris Museum (H UTCHINSON & D ALZIEL 1927; H EPPER 1958; (G AGNEPAIN 1906b: 56, 57). see also B RETELER & V AN Z IEL 1989). After this donation the Paris Museum distrib- The aim of this paper is to highlight P IERRE’s uted some material of his collection, notably publication of new taxa by means of the distribu- some of the copies of plant illustrations that tion of illustrations with analysis, of which many remained. This was then an official sending from are incorrectly cited and/or wrongly treated. The the Paris Museum and was witnessed as such, cases dealt with below show the consequences of e.g., by K on 4 June 1904 (stamps on drawings of correct interpretation of these names, which may Megabaria klaineana and M. obovatum ) or as “ex vary from a simple correction of author citation Herbario Musei Parisiensis” in BR on the illustra- from “Pierre ex...” to “Pierre” (e.g., Klainedoxa ) tion of Klaineanthus gabonii P IERRE (Fig. 2). This on the one hand, to a change of generic name illustration is also present in BR attached to a (e.g., Mildbraedia to Plesiatropha ) on the other. duplicate of Klaine 1941, a collection on which the illustration was based, at least partly, and con- cerns the first sending by P IERRE. PIERRE’S WORK ON THE FLORA Before P IERRE, little had been published on the OF GABON flora of Gabon because of botanical exploration had hardly begun (F LORET 1976). As a result of When P IERRE returned from Saigon in 1877, collections from Libreville and surroundings where he had founded the botanical garden and made by S OYAUX , but especially by the mission- was its first director for more than 12 years, he ary K LAINE,the botanical wealth of Gabon was settled in Paris, 63 rue Monge, close to the Paris being unveiled and P IERRE set himself at work Herbarium. In 1883 he moved to Charenton with his great intellectual energy to investigate it. (G AGNEPAIN 1906a) and later on to Villeneuve- This K LAINE collection, at least partly (L ETOUZEY Saint-Georges, where he lived at least in 1891, 1962) was acquired by him and was labelled as and then, probably in 1893, moved again, to P IERRE’s collection (“H.L.-P. N°”, on the illustra- Saint-Mandé. There was not enough space in the tions) but mostly not numbered. Paris Museum to house his large collection from Pierre analyzed the material, made descrip- Indochina, so P IERRE must have worked on his tions and some sketches, and then handed it on Flore forestière de la Cochinchine at home together to D ELPY for the illustration. P IERRE’s knowledge with his artist E. D ELPY and it must have been of the tropical flora was not restricted to the area from his home that the drawings and duplicates of his Flore forestière de la Cochinchine, but was were sent away, not from the Paris Museum. much larger. This wide knowledge meant that he P IERRE was already 70 years old, when, in 1903, could make decisions such as the inclusion of the two years before his death, he finally was offered a Euphorbiaceous genera Galearia and Microdesmis modest space for his collection in the Paris (P IERRE 1896b, 1897b) in Pandaceae, which is Museum together with a small office. Most prob- now well accepted (F ORMAN 1966; V ILLIERS ably this was also the occasion he moved back to 1973). P IERRE (1897a) was also aware of the close Paris, and lived 18 rue Cuvier (Paris V e ), close to relationship between the Scytopetalaceae and the Botanical Garden, till his death in 1905. He Napoleonaea of the Lecythidaceae, which were

ADANSONIA, sér. 3 • 2005 • 27 (2) 327 Breteler F.J.

T ABLE 1. — Dates of illustrations and distribution of some of D ELPY’s drawings.

Taxon Illustration dateDistributed toProof

Staphysora klaineana Pierre (Euphorbiaceae) XII.1895 BR, PPierre (1896a: Jollydora Pierre (Connaraceae) XII.1895 B, P1233) in session of 6 March 1896: “précédemment distribués” Klainedoxa gabonensis Pierre (Irvingaceae) 17.II.1896B, BR, PPierre in session of 6 March 1896: 1236, nota Klaineanthus gabonii Pierre (Euphorbiaceae) XI.1900 BR, P Plesiatropha klaineana Pierre (Euphorbiaceae) BR, K, P Desbordesia insignis Pierre (Irvingaceae) II.1901B, BR, PVan Tieghem 1905: 28 February 1901

recently united in the same family Lecythidaceae which the illustration was produced and signed (M ORTON et al. 1998; B RETELER 2002). Besides by D ELPY. I have not observed a case in which the correspondence between P IERRE and the col- D ELPY’s illustration was distributed at a later date lector K LAINE about the purchase of his collec- than the month in which the illustration was tions, there was also contact about the novelties produced. of the plant world around Libreville (e.g., P IERRE In the absence of proof establishing some other 1896a: 1233). date, D ELPY’s date is taken as the date of “print- The cooperation between the collector K LAINE ing” and also as the date of distribution in the field and the botanist P IERRE in France was (G REUTER et al. 2000: Art. 31.1). This means very fruitful. For Gabon it happened again when that the drawings of Klaineanthus gabonii and the collector L E T ESTU and the Paris taxonomist Plesiatropha klaineana are treated as having been P ELLEGRIN worked together in the first half of the distributed in November 1900. last century.

TREATMENT OF SOME MANUSCRIPT DATES OF PUBLICATION NAMES OF PIERRE

According to article 31.1 of the ICBN EUPHORBIACEAE (StLouis Code: G REUTER et al. 2000) the date of publication is the date on which the printed mat- G ENERAL REFERENCES. — G OVAERTS et al. 2000; ter became available. In the case of P IERRE’s L ÉONARD 1962; R ADCLIFFE-S MITH 2001. names, to be accepted as valid, evidence has to be produced about the distribution itself and at Cyclostemon klaineanum Pierre, tab. Herb. what date. In other words, when were the copied L.Pierre, del. E. Delpy 12/1900. illustrations sent to the public institutions of that time? There is strong evidence that D ELPY, very D ELPY’s illustration, bearing this name and pre- soon after he had finished the illustration, added sent in K and P, is mentioned by H UTCHINSON (as his name and the date, copied it and then sent C. klaineanus)in synonymy under his Drypetes the copies away, as illustrated in Table 1. pierreana in the Flora of Tropical Africa. However, As may be deducted from the examples in P IERRE’s name is validly published and by transfer Table 1, distribution was very quick, and, at least to Drypetes the specific epithet should have been sometimes, if not always, in the same month in maintained. The correct name therefore is:

328 ADANSONIA, sér. 3 • 2005 • 27 (2) Nomenclatural aspects of the manuscript names of Louis Pierre

Drypetes klaineana (Pierre) Breteler, comb. 1898. P IERRE’s valid new monotypic genus is nov. congeneric with and has priority over P AX’s het- Cyclostemon klaineanum Pierre, tab. Herb. L. Pierre, erotypic, at that time also monotypic, genus del. E. Delpy 12/1900 (coll. Klaine 572). — Type: Mildbraedia , published in 1909 and based on Klaine 572, Gabon, near Libreville, fl. fr. Nov. 1896- Feb. 1898 (holo-, P!; iso-, K!). M.paniculata Pax. This leads to the following Drypetes pierreana Hutch., Fl. Trop. Afr. VI.1: 686 nomenclature with two new combinations for (1912). — Type: Klaine 572, Gabon, near two Mildbraedia species and two new combina- Libreville, fl. fr. Nov. 1896-Feb. 1898 (lecto-, K, tions for two infraspecific taxa. here designated; iso-, P).

Plesiatropha Pierre Klaineanthus gabonii Pierre, tab. Herb. L. Pierre, del. E. Delpy 11/1900, Fig. 2. T YPUS. — Plesiatropha klaineana Pierre, tab. Herb. L. Pierre, del. E. Delpy 11/1900. — Type: Klaine The monotypic genus Klaineanthus is attrib- 1261 , Gabon, near Libreville, Θ fl., fr. Aug. 1898 uted to P RAIN (Bull. Misc. Inform., Kew 1912: (lecto-, P!, here designated). 105 [1912]) who retained P IERRE’s so-called Mss Mildbraedia Pax, Engl. Bot. Jahrb. Syst. 43: 319 name, but changed the termination of P IERRE’s (1909). — Type: M. paniculata Pax = Plesiatropha paniculata , see below. epithet from “ gabonii” into “ gaboniae ”. D ELPY’s illustration is found at BR, together with a duplicate of Klaine 1941 and also separately stamped “ex Herbario Musei Parisiensis”, as well Plesiatropha carpinifolia (Pax) Breteler, comb. as in P, together with Klaine 277, the other nov. syntype. P IERRE’s name is validly published. Jatropha carpinifolia Pax, Pflanzenw. Ost-Afr. C.: Therefore the correct name with the correct 240 (1895). — Type: Stuhlmann 6372, Tanzania, Uzaramo District, Kidenge (holo-, B, delet.; drawing author citation is: of holo-, K). Klaineanthus gabonii Pierre. Mildbraedia carpinifolia (Pax) Hutch., Fl. Trop. Afr. 6 (1): 801 (1912); Radcliffe-Smith, Euphorbiaceae, part 1 in Fl. Trop. East Afr.: 340, fig. 64 (1987). Megabaria klaineanum Pierre, tab. Herb. L. Pierre, del. E. Delpy 12/1900. R ADCLIFFE-S MITH subdivided this species into Megabaria obovatum Pierre, tab. Herb. L. Pierre, two varieties one M. carpinifolia var . carpinifolia, del. E. Delpy 12/1900. restricted to Kenya and Tanzania, and M. carpinifolia var. strigosa A.R.Sm. to Tanzania and These two names are invalid, because they are Mozambique. This leads to the following combi- simultaneously published without a description nation: of the genus Megabaria. For details see L ÉONARD Plesiatropha carpinifolia (Pax) Breteler var. stri- (1995). gosa (A.R.Sm.) Breteler, comb. nov. Mildbraedia carpinifolia (Pax) Hutch. var. strigosa A.R.Sm., Kew Bull. 27: 507 (1972). — Type: Plesiatropha klaineana Pierre, tab. Herb. L. Pierre, Drummond & Hemsly 2021 , Tanzania, Morogoro del. E. Delpy 11/1900, Fig. 3. District, Turiani (holo-, K; iso-, EA).

The name of the monotypic new genus Plesiatropha and its illustration are cited by Plesiatropha paniculata (Pax) Breteler, comb. H UTCHINSON in the Flora of Tropical Africa nov. (1912) under his Mildbraedia klaineana. The Mildbraedia paniculata Pax, Bot. Jahrb. Syst. 43: illustration, present at K, but also at BR and P, is 319 (1909). — Type: Mildbraed 2920, 3189, 3197 , based on Klaine 846 and 1261 dated August Congo (Kinshasa), Ituri, Njiapanda, montane forest, fl.

ADANSONIA, sér. 3 • 2005 • 27 (2) 329 Breteler F.J.

F IG. 2. — Klaineanthus gabonii Pierre, drawing by E. D ELPY, XI.1900. After a copy in BR.

330 ADANSONIA, sér. 3• 2005 • 27 (2) Nomenclatural aspects of the manuscript names of Louis Pierre

F IG. 3. — Plesiatropha klaineana Pierre, drawing by E. D ELPY, XI.1900. After a copy in P.

ADANSONIA, sér. 3 • 2005 • 27 (2) 331 Breteler F.J.

F IG. 4. — Desbordesia insignis Pierre, drawing by E. D ELPY, II.1901. After a copy in BR.

Mar.-Apr. (syn-, B, delet.); neotype (here designated): Bequaert 2667, Congo (Kinshasa), Nandefu, IRVINGIACEAE Penghe-Irumu, virgin forest of Ituri R., Η fl. Feb. G ENERAL REFERENCES. — A UBRÉVILLE 1962; (BR!). H ARRIS 1996, 1999.

Desbordesia insignis Pierre, tab. Herb. L. Pierre, L ÉONARD has divided M. paniculata into two del. E. Delpy 2/1901, Fig. 4. subspecies, M. paniculata subsp. paniculata from eastern Congo (Kinshasa) to NE Congo Untill now the monotypic genus Desbordesia is (Brazzaville), Cameroun and N Gabon, and attributed to V AN T IEGHEM, who “validated” M.paniculata subsp. occidentalis J.Léonard P IERRE’s name in 1905. But the same author from Liberia, Côte d’Ivoire, and Ghana. The stated there, that the illustration of D ELPY was latter subspecies is now combined in Plesia- distributed in February 1901 to the main “her- tropha . biers publics”, which means the publication of an illustration with analysis, hence a valid publication. It has been located at BR and P. Between Plesiatropha paniculata (Pax) Breteler subsp. February 1901 and 1905, E NGLER (1902) occidentalis (J.Léonard) Breteler, comb. nov. described the single species as Irvingia glaucescens Mildbraedia paniculata Pax subsp. occidentalis which became the basionym of Desbordesia J.Léonard, Bull. Jard. Bot. État Brux. 31: 65 (1961). — Type: Leeuwenberg 3005 ,Liberia, right bank of glaucescens (Engl.) Tiegh. under which name the Cavally R., 7 km S. of Taï (Côte d’Ivoire), Η fl. Mar. species is known at present. The correct name, (holo-, K; iso-, U, WAG!). however, is :

332 ADANSONIA, sér. 3• 2005 • 27 (2) Nomenclatural aspects of the manuscript names of Louis Pierre

F IG. 5. — Klainedoxa gabonensis Pierre, drawing by E. D ELPY, 17.II.1896. After a copy in P.

ADANSONIA, sér. 3 • 2005 • 27 (2) 333 Breteler F.J.

Desbordesia insignis Pierre, tab. Herb. L. Pierre, above, as mentioned on D E W ILDEMAN’s plate: del. E. Delpy 2/1901 (coll. Klaine 1930). “E. Menger sec. Delpit et ad. nat. del”. This Irvingia glaucescens Engl., Bot. Jahrb. Syst. 32: 124 proves that D ELPY’s illustration of Egassea laurifolia (1902). Pierre had been distributed (at present found in Desbordesiaglaucescens (Engl.) Tiegh., Ann. Sc. Nat. Bot., sér. 9, 1: 290 (1905); Aubréville, Flore Gabon BR, K and P), and that the name is validly pub- 3: 29, pl. 5 (1962); Harris, Bull. Jard. Bot. Belg. 65: lished by P IERRE. The name with the correct 147 (1996). — Type: see H ARRIS 1996. author citation for the combination is therefore: Oubanguia laurifolia (Pierre) Tiegh.

Klainedoxa gabonensis Pierre, tab. Herb. L. Pierre, del. E. Delpy 17/2/1896, Fig. 5. Scytopetalum klaineanum Pierre, tab. Herb. L.Pierre, del. E. Delpy 8/1896. According to H ARRIS (1996, 1999), Pierre ex Engl. are the authors of the genus Klainedoxa and Up to now E NGLER is cited as the publishing its type species, but A UBRÉVILLE (1962) cited author of this species, based on E NGLER’s publica- both correctly as from P IERRE alone, based on tion (1897). P IERRE’s publication of 1896a. D ELPY’s illustra- E NGLER made use of D ELPY’s illustration, now tion with analysis, dated 17 February 1896 (at present in BR, K and P, for his figure 51a, as wit- present found in BR, K, P), was sent to Berlin, nessed in the caption: “Teils nach Zeichnungen together with a duplicate of Klaine 188 and a full von Pierre, teils Original”. The publishing author description of the genus and the species in of this species therefore is P IERRE and not “Pierre D ELPY’s handwriting, signed “Saint Mandé, ex Engl.” 17février 1896, L. Pierre” (P IERRE 1896a: 1236). E NGLER, in his publication of April 1896 (E NGLER 1896: 227), refers to P IERRE and it is Acknowledgements clear that he based Klainedoxa Pierre on what he I am very grateful to P. B AMPS (BR) for his help to had received from P IERRE: a description of the locate several copies of the D ELPY’s illustrations and to genus and of its single species together with G. A YMONIN (P) for the details concerning P IERRE’s D ELPY’s illustration and a duplicate of the type addresses in or near Paris. My wife B.J.M. B RETELER- K LEIN B RETELER is kindly acknowledged for having (P IERRE 1896a: 1236). P IERRE’s Klaine 188 prepared the electronic version of the manuscript. description in print (1896a) appeared shortly after E NGLER’s. The correct author for the genus Klainedoxa and the species K. klaineana , however, is P IERRE. REFERENCES

A UBRÉVILLE A. 1962. — Irvingiaceae, in Flore du SCYTOPETALACEAE Gabon 3: 12-32. B RETELER F.J. 1978. — The African Dichapetalaceae IV. Meded. Landbouwhogeschool Wag. 78 (10): 1- G ENERAL REFERENCE. — L ETOUZEY 1978. 84. B RETELER F.J. & V AN Z IEL H.W. 1989. — Jollydora , Egassea laurifolia Pierre, tab. Herb. L. Pierre, del. in B RETELER F.J. (ed.), The Connaraceae, a taxonomic study with emphasis on Africa. Wag. Agric. E. Delpy 5/1901. Univ. Papers 89 (6): 284-293. B RETELER F.J. 2002. — Scytopetalaceae are stipulate. This name, basionym of Oubangia laurifolia , is Kew Bull. 57: 759-761. attributed to D E W ILDEMAN as “Pierre ex De B RUMMITT R.K. & P OWELL C.E. (eds) 1992. — Wild.” (as “Pierre in De Wild.” by K EAY 1958: Vascular Plant Families and Genera . Royal Botanic Gardens, Kew. E ILDEMAN 300). D W published Egassea laurifolia C HEVALIER A. 1906. — J.B.-Louis Pierre, 1833-1905, together with a plate in 1903. This plate was in botaniste français. Agric. pratiq. Pays Chauds : part copied from D ELPY’s illustration cited 1-15.

334 ADANSONIA, sér. 3 • 2005 • 27 (2) Nomenclatural aspects of the manuscript names of Louis Pierre

D E W ILDEMAN É. 1903. — Rhaptopetalaceae: 31-33, H UTCHINSON J. & D ALZIEL J.M. 1927. — Flora of West planche XVII, in Études sur la flore du Bas et du Tropical Africa I: 518-519. Crown Agents, London. Moyen Congo. Ann. Mus. Congo, sér. 5, 1. K EAY R.W.J. 1958 — Scytopetalaceae: 299-300, in D URAND T. & J ACKSON B.D.1899. — Index H UTCHINSON J. & D ALZIEL J.M., Flora of West Kewensis . Suppl. 2. Royal Botanic Gardens, Kew. Tropical Africa, ed. 2. 1 (2). Crown Agents, London. E NGLER A. 1896. — Simarubaceae: 202-203, in E NGLER L EANDRI J. 1963. — Louis Pierre, botaniste de terrain A. & P RANTL K.,Die Natürlichen Pflanzenf. III, 4. et systématicien français. Adansonia sér. 2, 3: 207- E NGLER A. 1897. — Scytopetalaceae: 241-245, in 220. E NGLER A. & P RANTL K., Die Natürlichen L ÉONARD J. 1962. — Euphorbiaceae. Flore du Congo Pflanzenfam., Nachträge I zum II-IV Teil. et du Ruanda-Burundi 8: 1-214. INÉAC, Bruxelles. E NGLER A.1902. — Bot. Jahrb. Syst. 32: 124. L ÉONARD J. 1994. — Révision des espèces zaïroises du F LORET J.J. 1976. — Origine des flores africaines et genre Maesobotrya Benth. (Euphorbiaceae). Bull. malgaches. Flore du Gabon, in M IÈGE J. & S TORK Jard. bot. nat. Belg. 63: 2-67. A. L. (eds), Comptes rendus VIII réunion AET- L ÉONARD J. 1995. — Protomegabotia meiocarpa FAT. Boissiera 24: 575-580. J.Léonard espèce nouvelle d’un genre nouveau F ORMAN L.L. 1966. — The reinstatement of Galearia pour le Zaire (Euphorbiaceae). Bull. Jard. bot. nat. Zoll. & Mor. and Microdesmis Hook.f. in the Belg. 64:53-63. Pandaceae. Kew Bull. 20: 309-318. L ETOUZEY R. 1962. — Réhabilitation d’un Fagara du G AGNEPAIN F. 1906a. — J.-B.-Louis Pierre (1833- Gabon : F. bouetensis Pierre ex R. Let. sp. nov. (aff. 1905). Notice nécrologique. Nouv. Arch. Mus. Hist. F. buesgenii). Adansonia sér. 2, 2: 138-143. nat. Paris,sér. 4, 8: xix-xxxi. L ETOUZEY R. 1978. — Scytopetalaceae: 139-202, in G AGNEPAIN F. 1906b. — Notice biographique sur Flore du Gabon 24. Muséum national d’Histoire J.-B.-Louis Pierre. Bull. Soc. bot. France 53: 54-59. naturelle, Paris. G ILG E. 1896. — Connaraceae Africanae II. Bot. M ORTON C.M., P RANCE G.T., M ORI S.C. & Jahrb. Syst. 23: 208-218. T HORBURN L.G.1998. — Recircumscription of the G ILG E. 1898. — Camptostylus, eine neue Gattung der Lecythidaceae. Taxon 47: 817-827. Flacourtiaceae. Notizbl. Bot. Gart. Berlin Dahlem P ELLEGRIN F. 1913. — Contribution à l’étude de la 12: 57-58. flore de l’Afrique occidentale : Dichapetalacées. G ILG E. 1908. — Flacourtiaceae Africanae. Bot. Jahrb. Bull. Soc. bot. France 59: 578-585, 640-648. Syst. 40: 444-518. P IERRE L. 1880-1899. — Flore forestière de la Cochin- G OVAERTS R., F RODIN D.G. & R ADCLIFFE-S MITH A. chine. 26 fascicules. Octave Doin, Paris. 2000. — World Checklist and Bibliography of P IERRE L. 1892. — Flore forestière de la Cochinchine, Euphorbiaceae . 4 vols. Royal Botanic Gardens, Kew. fasc. 17, sub tab. 263 ( Fegimanra ) and 267 G REUTER W., M C N EILL J., B ARRIE F.R., B URDET ( Lavigeria ). H.M., D EMOULIN V., F ILGUEIRAS T.S., N ICOLSON P IERRE L. 1896a. — Plantes du Gabon. Bull. mens. D.H., S ILVA P.C., S KOG J.E., T REHANE P., Soc. linn. Paris 2: 1233. T URLAND N.J. & H AWKSWORTH D.L.2000. — P IERRE L. 1896b. — Plantes du Gabon. Bull. mens. International code of botanical nomenclature (Saint Soc. linn. Paris 2: 1256. Louis Code) adopted by the Sixteenth International P IERRE L. 1897a. — Sur quelques olacacées du Gabon. Botanical Congress, Saint Louis, Missouri, July- Bull. mens. Soc. linn. Paris 2: 1296. August 1999. Regnum Vegetabile 138: 1-474. P IERRE L. 1897b. — Sur quelques olacacées du H ARRIS D.J. 1996. — A revision of the Irvingiaceae in Gabon. Bull. mens. Soc. linn. Paris 2: 1327. Africa. Bull. Jard. bot. nat. Belg. 65: 143-196. P IERRE L. 1899. — Observations sur quelques H ARRIS D.J. 1999. — Irvingiaceae: 1-25, in Species Bixacées. Bull. mens. Soc. linn. Paris ,nouv. sér. 13: Plantarum, Flora of the World,part 1. 109-112. H EPPER F.N. 1958. — Connaraceae: 739-749, in R ADCLIFFE-S MITH A. 2001. — Genera Euphorbia- H UTCHINSON J. & D ALZIEL J.M., Flora of West cearum . Royal Botanic Gardens, Kew. Tropical Africa, ed. 2, 1 (2). Crown Agents, London. V AN T IEGHEM P. 1905. — Sur les Irvingiacées. Ann. H UL S. 1995. — Flacourtiaceae. Flore du Gabon 34: Soc. Nat. Bot. , sér. 9, 1: 247-320. 40-62. Muséum national d’Histoire naturelle, Paris. V ILLIERS J.F. 1973. — Pandaceae: 14, in Flore du H UTCHINSON J. 1912. — Flora Tropical Africa VI. 1. Gabon 22. Muséum national d’Histoire naturelle, Euphorbiaceae, Maesobotrya : 663-670. Paris.

Submitted on 15 March 2005; accepted on 8 August 2005.

ADANSONIA, sér. 3 • 2005 • 27 (2) 335