gas DICOTYL. seu EXOGENAE. MACARANGA. 
Pseudo-Rottlera Zolling. Over Soort. van Rottlera p. 10. — Acalyphe sp. 
Bail. — Adelize sp. Rozb. — Claoxyli sp. R. Wight. — Cleidii sp. Baill. — 
Crotonis sp. Blanco. — Osyris sp. Rozb. — Ricini sp. L., Forst. — Rottlerze 
sp. T Cat., Hassk.— Tragie sp. Wall. — Urtice sp. Itozb. — Zanthoxyli 
sp. Bl. , 
Calyx masc. valvaris, fcmineus imbricativus. Petala utriusque 
sexus 0. Discus utriusque sexus 0. Stamina centralia, in receptaculo 
convexo v. plano-convexo sita. Antherae non regulariter in series verti- 
cales dispositee, dorso subpeltatim fixze, 3-h-loculares ; eonnectivum in- 
completum, loculis brevius. Rudimentum ovarii 0. Ovarii loculi 1-ovulati. 
Fructus capsularis. Semina non carunculata, albuminosa. Cotyledones 
late, radicula multo longiores. — Genus orbis antiqui. Plante semper 
lignose, habitu sepe hinc ad species Malloti, illino ad Ricinum acce- 
dentes, interdum etiam Claoxylis similes. Folia vulgo alterna, scpe 
ampliuscule bistipulata, longius breviusve petiolata, basi haud raro 
plus minusve peltata, limbus caeterum ambitu latior aut angustior, 
vulgo eo angustior quod brevius petiolatus, angustior penninervius, 
latior palmatim 3-7-nervius, subtus scpissime glandulis ceraceis, more 
specierum Malloti, aureis aut dein fuscis v. ferrugineis punctifor- 
mibus adspersus. Flores dioiei, glomerati v. fascicylati, in spicas aut 
racemos axillares simplices v. paniculato-ramosos dispositi, quoad nu- 
merum partium ludentes, stamina tamen vulgo pauciora quam in genere 
Malloto, szepius infra 15, in paucis paucissima, 3-2-1. Fructus juniores 
vulgo carnosuli, maturi autem capsulari-aperlentes, inermes aut varie 
armati. 
Sect. I. PAcHYsTEMON. — Genus Pachystemon Bl. Büjdr. p. 626; Endl. 
Gen. plant. n. 5118 ; R. Wight Icon. plant. Ind. orient. t. 1949. fig. 5; 
Baill. Etud.  gén. Euphorb. p. 551. t. 20. fig. 38-41; Müll. Arg. in 
Mém. soc. phys. et hist. nat. de Genéve, vol. 17. part. 2. p. 54 c. ic. 
stam. et diagr. — Ricini sp. Reimw. — Pachystemonis sect. Eupachy- 
stemon Miq. Flor. Ind. bat. Suppl. 1. p. 462. 
Anthere omnes basi triloculares, trivalves. Ovarium 6-4-loculare. — Arbores in 
insulis Indie batava, et in Ceylonia crescentes, hinc Ricino, illinc speciebus 
sectionis Eumacarange similes. Ramuli dense lateque cicatricosi. Folia alterna, 
longe petiolata, amplo-bistipulata, peltata, vulgo triloba, palmatinervia, rigida, 
glanduloso-dentata; dentes apice glanduloso-foveolato-excavati. Flores fcem. 
Sessiles, contracto-spicati, masculi in axilla bractearum spicarum numerosi, 
minutissimi, sepissime monandri et casu tantum hinc inde diandri. Styli 
simplices, basi connati, suberecti, intus leviter stigmatosi. Semina spurie aril- 
lata, subtrigona, fere tota longitudine placentze adnata. — Genus antea sane 
structura antherarum distinctissimum, habitu autem a nonnullis Macarangis vix 
distinguendum, sed in sectione Mappa et in sect. Eumacaranga flores monan- 
dri aut diandri etiam occurrunt, et sect. Dimorphanthera antheras triloculares 
et quadriloculares in quoque flore simul offert et hanc sectionem cum sequen- 
tibus arcte jungit. 
1^ Carpidia dorso cornuta. 
1. M. conNU TA, lobis foliorum dissimilibus lateralibus subadscendentibus, 
ovario dense cerino-glanduloso secus suturas carpidiorum nudo, carpidiis 
dorso valide cornutis, cornubus apice conniventibus quam capsula depresso- 
globosa longioribus, arillo puniceo, testa seminum hieroglyphice impressa. 
4 In hort. bogoriensi cultus (hb. Hassk.! a cl. Teysm. miss.). Foliorum 
limbus longe petiolatus, late peltatus, inaequaliter trilobus; lobi triangulares. 
Bractee masc. late triangulares, concave, acute. Anthere omnino ut in 
M. triloba. — Haud dissimilis M. trilobze, sed pallidior. Folia ambitu magis 
