284 F- P ax - — Euphorbiaceae-Acalypheae-Mercurialinae. 



Südafrikanische Steppenprovinz, auf Grasplätzen, Kalksinterhügeln. 



f. 1. mercurialis (Baill.) Pax et K. Hoffm. — Mercurialis triandra E. Mey. in 

 Linnaea IV. (1829) 237. — Seidelia mercurialis Baill. Etud. gen. Euph. (1858) 466. — 

 Tragia triandra var. genuina Müll. Arg. in DC. Prodr. XV. 2. (1866) 947. — Herba 

 15 — 20 cm alta. Folia lineari-lanceolata, superiora linearia, basin versus in petiolum 

 brevem abeuntia, apice utrinque 1 — 2-dentata vel integra. 



Deutsch-Südwestafrika: Windhoek (Dinter n. 234!). Kapland, Großer 

 Tafelberg (Drege n. 796!). Griqualand-West, Kimberley (Marlotte n. 869'.). 



f. 2. pumila (Sond.) Pax et K. Hoffm. — Mercurialis pumila Sond. in Linnaea 

 XXIII. (1850) 112. — Seidelia pumila Baill. Etud. gen. Euph. (1858) 466; Prain in Ann 

 Bot. XXVII. (1913) 398. — Tragia triandra var. pumila Müll. Arg. in DC. Prodr. XV. 2. 

 (18 66) 9 47. — Herba pumila, 5 — 10 cm alta. Folia oblongo-obovata. basin versus 

 in petiolum longiusculum attenuata, apicem versus utrinque pluridentata. 



Kapland: Abhänge auf Kalkboden bei Amsterdamsvlacte (Drege n. 3843!). 



Nomina non ad genus pertinentia. 



Seidlia Kostel. Allgem. med. pharm. Fl. V. (1836) 1945 est synonymon generis 

 Vaticae L. ex ordine Dipterocarpacearum. 



Seidlia Opiz, Naturaliensamml. n. 11 (1826) 349 est synonymon generis Scirpih 

 ex ordine Cyperacearum. 



48. Leidesia müh. Arg. 



Leidesia*) Müll. Arg. in DC. Prodr. XV. 2. (1866) 792; Benth. in Benth. et 

 Hook. f. Gen. III. (1880) 310; Pax in Engler u. Prantl, Pflzfam. III. 5. (1890) 50; 

 Prain in Ann. Bot. XXVII. (1913) 399. — Mercurialis Sect. Seidelia Baill. in Adan- 

 sonia III. (1864) 158, 175 ex parte. 



Flores monoici, apetali. Discus utriusque sexus nullus. Calyx q? tenuiter mem 

 branaceus, in alabastro clausus, per anthesin valvatim 3-partitus. Stamina 4 — 7, cen- 

 tralia; filamenta brevia; loculi globosi, a basi distincti, demum patenter bivalves. Ovarii 

 rudimentum nullum. Calyx Q nullus vel saepius ad bracteam unicam, brevem, an- 

 gustam reductus. Ovarium biloculare; styli liberi, indivisi, tenues, satis elongati; ovula 

 in loculis solitaria. Capsula parva, in coccos 2-valves dissiliens, interdum abortu mono- 

 cocca; endocarpium tenuiter crustraceum. Semina subglobosa, ecarunculata; testa crustacea; 

 albumen carnosum; cotyledones latae, planae. — Herba tenera, annua, ramosa. Folia 

 alterna vel subopposita, longe petiolata, ovata vel orbiculata, crenato-dentata, bistipu- 

 lata. Flores Q in axillis foliorum superiorum pauci, subglomerati, subsessiles, uni- 

 bracteati et lateraliter minutissime bibracteolati, q^ in racemos pedunculatos, gracillimos, 

 interrupte fasciculifloros dispositi; bracteae q^ bistipulatae , multiflorae; pedicelli tf 

 calycem superantes, apice articulati. 



Species unica, capensis. 



L. procumbens (L.) Prain in Ann. Bot. XXVII. (1913) 400. — Mercurialis tri- 

 cocca E. Mey. in Drege, 2 Pflanzendokum. (1843) 201. — Adenoeline mercurialis Baill. 

 Etud. gen. Euph. (1858) 457 ex parte. — Leidesia capensis Müll. Arg. in DC. Prodr. 

 XV. 2. (1866) 793; Benth. in Hook. Icon. pl. XIII. (1879) 66, t. 128 4. — Herba 

 annua, diffuse ramosa; caules 10 — 20 cm alti vel humiliores, subpellucidi, glabri, inter- 

 dum fasciculatim ramosi. Petiolus 2 — 4 cm longus, glaber, limbus 2 — 6 cm longus, 

 1 y 2 — 4 cm latus, deltoideo-ovatus vel orbiculari-ovatus, obtusus vel obtuse acutatus, 

 basi breviter cuneato-contractus, parce crenato-dentatus, supra et margine parce pilosus, 

 subtus glaber, tenuiter membranaceus; stipulae subulatae vel lanceolatae. Inflorescentia 



*) Nomen genericum est anagramma Seideliae (p. 282). 



