100 F. Pax. — Euphorbiaceae-Acalypheae-Mercurialinae. 



E. Poggei Prain 1. c. 623 = Athroandra Poggei (Prain) Pax et K. Hoffm. 

 E. rivularis Prain 1. c. 621 = Athroandra rivularis (Müll. Arg.) Pax et K. Hoffm. 

 E. Welwitschiana Prain 1. c. 622 = Athroandra Welivitschiana (Müll. Arg.) 

 Pax et K. Hoffm. 



20. Claoxylon Juss. 



Claoxylon*) Juss. Euphorb. Tent. (4 824) 43; Endl. Gen. II. (1836—40) 1H2; 

 Baill. Etud. gen. Euphorb. (1858) 491, t. 20, f. 20 — 24; Benth. in Benth. et Hook. f. 

 Gen. III. (1880) 309 ex parte. — Erythrochilus Reinw. ex Blume, Cat. Gew. Buitenz. 

 (1823) HO. — Erytrochilus Blume, Bijdr. (1825) 614. ■ — Erythrochilus Reinw. ex 

 Flora VIII. (1825) 103. — Mercurialis Sect. Claoxylon Baill. Adansonia III. (1862) 175 

 et Hist. pl. V. (1874) 210 ex parte. — Claoxylon Sect. Gymnoclaoxylon et Sect. Eu- 

 claoxylon Müll. Arg. in Linnaea XXXIV. (1865) 163, 165; in DC. Prodr. XV. 2. (1866) 

 780, 781; Pax in Engler u. Prantl, Pflzfam. III. 5. (1890) 48. — Claoxylum Sect. 

 Erythrochilus O. Ktze. in Post et O. Ktze. Lexicon (1904) 128. — Claoxylon Sect. 

 Euclaoxylon Prain in Ann. Bot. XXV. (191 l) 604. 



Flores dioici, rarius monoici, apetali. Calyx tf in alabastro clausus, subglobosus 

 vel obovoideus, apiculatus, per anthesin valvatim 2 — 4-partitus. Stamina 10 — 200 vel 

 numerosiora, saepissime 20 — 30; filamenta brevia vel elongata; antherae loculi ob- 

 ovoidei vel cylindrici, basifixi, erecti, praeter basin inter se liberi. Discus extrastami- 

 nalis nullus, sed glandulae inter stamina evolutae, obovoideae, glabrae vel saepius pilosae, 

 rarius nullae; ovarii rudimentum nullum. Sepala Q 2 — 4, saepissime 3. Ovarium 2 — 

 3-loculare, rarissime 4-loculare; styli liberi vel basi connati, ± papillosi, rarius sublaeves; 

 ovula in loculis solitaria. Disci hypogyni glandulae liberae vel in urceolum alte lobatum 

 connatae. Capsula 2 — 3-, rarius 4-cocca; cocci coriacei, loculicide dehiscentes. Semina 

 globosa, ecarunculata, sub strato extimo carnoso reticulata vel foveolata; cotyledones 

 latae, planae; albumen carnosum. — Arbores vel frutices; gemmae non perulatae; partes 

 juveniles pilis adpressis, substrigillosis pubescentes, saepius mox glabratae. Folia alterna, 

 petiolata, membranacea vel coriacea, glanduloso-dentata vel subintegra, opaca, saepissime 

 scabra, juvenilia saepius purpurascentia; stipulae minutae, herbaceae, mox deciduae. 

 Flores utriusque sexus in racemos elongatos, rarius abbreviatos fasciculatim vel rarissime 

 racemulosim dispositi; bracteae (j* 1 — pluriflorae, Q saepius 1-florae, rarius pluriflorae. 

 Indumentum simplex, rarissime stellare. 



Species notae 57 ab insulis madagassicis per Asiam tropicam et insulas oceanicas 

 usque ad insulas sandwicenses distributae, inter se saepe simillimae et caute examinandae, 

 ad specimina incompleta haud rite determinandae. 



Clavis sectionum. 



A. Indumentum e pilis simplicibus formatum, 

 saepissime mox rarescens. 

 a. Stamina ultra 100, 100 — 200 vel 

 numerosiora. 

 a. Glandulae juxtastaminales nullae. 



Stamina 200 vel numerosiora . . Sect. 1. Gymnoclaoxylon Müll. Arg. 

 ß. Glandulae juxtastaminales evolutae. 

 I. Glandulae juxtastaminales glabrae. 



Stamina ± 130 Sect. 2. Tomentosa Pax et K. Hoffm. 



II. Glandulae juxtastaminales pilosae. . 



Stamina rh 1 00. 



1. Bracteae rj 1 ± 30-florae . . Sect. 3. Nervosa Pax et K. Hoffm. 



2. Bracteae tf 1 — 3-florae . . Sect. 4. Borneensia Pax et K. Hoffm. 



*) Nomen derivatum a vocibus graecis x/Uiw = frango, $v\ov = lignum. 



