Gelonium. 21 



13. G. pycnantherum Pax et K. Hoffm. n. spec. — Arbor; ramuli angulosi, 

 glabri. Petiolus 3 — 6 mm longus; limbus ± 5 cm longus, 2^2 cm latus, oblongo- 

 vel obovato-ellipticus, obtusus vel subobtusus, basi cuneato-angustatus, integer, venis 

 valde prominentibus, reticulatis quasi foveolatus, grosse pellucido-puncticulatus, sub- 

 coriaceus. Flores dioiei, (^ in racemulos abbreviatos, multifloros dispositi; pedicelli 

 (j^ breves, 2 mm longi; sepala cum pedicellis puberula, eglandulosa; i-eceptaculum circa 

 stamina centralia 15 — 20 annulare, ceterum eglandulosum; connectivum ultra antheram 

 in appendicem triangulärem productum. Flores Q ignoti. Capsula 3-loba, apice de- 

 presso-truncata, 8 mm lata. Semen globosum, albidum. 



Madagaskar: Vavatobe im NW. der Insel, am Seestrande (Hildebrandt 

 n. 3318!); Fort Dauphin im Süden (Scott Elliot n. 2674!). 



Nota. Species a ceteris malagassicis optime diversa est. A 0. horbonieo differt staminibus 

 paucioribus et receptaculo <5 eglanduloso, a G. adenophoro, quocum floris (J structura fere 

 quadrat, sepalis puberulis et eglandulosis, ab utraque specie foliis prominenter reticulatis. Hoc 

 •charactere ad O. laurinum accedit, sed folia multo minora, integra et insuper antherae manifeste 

 appendiculatae sunt. G. Boivinianum male notum folia tenuiter venosa habet. 



14. G. africanum (Sond.) Müll. Arg. in DC. Prodr. XV. 2. (1866) 1129; Sim, 

 Forest and Forest Fl. Cape Colony (1907) 318 t. 103 f. 7. — Ceratophoms afrieamis 

 Sonder in Linnaea XXIII. (1850) 121. — Suregada ceratophora Baill. Adansonia III. 

 (1862) 154. — Suregada africana 0. Ktze. Rev. gen. II. (1891) 619. — Arbor glaber- 

 rima; cortex cinereo-albidus; ramuli angulosi. Petiolus brevissimus, 1 mm fere longus; 

 limbus 2 — 4 cm longus, 1 1/2 — 2Y2 ^^^^ latus, obovatus, subtruncato-obtusus, basi cu- 

 neatus, apice obtuse et grosse dentatus, chartaceus, venis valide prominentibus, reti- 

 culatis quasi foveolatus, pellucido-maculatus ; dentes emarginati. Flores dioiei, fasci- 

 culati, (j^ numerosi, pedunculo 3 mm longo stipitati; pedunculus ^ sub fructu 6 mm 

 longus. Sepala (^f 2 mm longa; stamina 12 — 14; sepala ^ inaequalia, 3 exteriora 

 minora; discus hypogjnus subcrenatus; styli breves, bifidi, recurvi; ovarium 2-locu- 

 lare. Capsula 8 mm longa, 9 — 10 mm lata, subturbinato-globosa , tridjma, apice 

 depresso-truncata, 3-carinata, verrucosa. Semen subglobosum, albidum, laeve, 5 nun 

 longuni. 



Südafrikanische Steppenprovinz: Kapkolonie, am Ufer und östlich vom 

 Flusse Kowie, Albany (Eckion u. Zeyher n. 69!); Griqualand East, Kentani (A. Pegler 

 n. 1120!); Port Natal (Gueinzius n. 104); Ressano Garcia (Schlechter n. 11932!). 



15. G. zanzibariense (Baill.) Müll. Arg. in DC. Prodr. XV. 2. (1866) 1130. — 

 G. xanxibareme Pax in Engler, Pflanzenwelt Ostafr. G. (1895) 241. — Suregada xan- 

 x,ihariensis Baill. Adansonia I. (I86O) 254. — Frutex arborescens vel arbor 2 — 7 m 

 alta; ramuli angulosi, glabri. Petiolus 2 — 5 mm longus; limbus 4 — 11 cm longus, 

 2 — 5 cm latus, obovatus vel oblongus, basi cuneato-angustatus, apice acutus vel breviter 

 ncuminatus, integer, subcoriaceus, siccus lutescenti-viridis, nitidus, reticulatus, pellucido- 

 et subvesiculoso-punctatus, Flores monoici, fasciculato-glomerati, breviter pedicellali, 

 C^ numerosi, Q plerumque 1 — 2 terminales in fasciculis vel etiam deficientes. Flores 

 C^ albi, vel viridescentes, evoluti 4 mm diametientes ; sepala utriusque sexus margine 

 ciiiata, dorso glandula ornata; stamina 12 — 8, rarius 6; receptaculum ^T g'anduli- 

 ferum; ovarium 3-loculare; styli breves, intus eroso-laceri. Capsula brevis, 7 — 8 mm 

 lata, 5 mm longa, tridyma, olivaceo-viridis, saepe abortu unilocularis. Semen foveolatum. 



— Fig. 5. 



Ostafrikanische Steppenprovinz; Sansibar-Küstenzone mit Einschluss 

 der vorgelagerten Inseln. Auf Sandboden, Korallenkalk, auch als Bestandteil des 

 dichten Busches. Sansibar (Boivin, llildebrandt n. 1119!, 0. Kuntze!, Schmidt 

 n. 38!, Stuhlmann n. 341 !, 431 !, Winkler n. 4219!). — Mafia (Busse n. 427!). 



— Dar-es-Salaam (Busse n. 16!, Engler n. 2101 !, 3228!, 3232!, Holst n. 4204!, 

 Holtz n. 390!, 6il!, 642!, 70l!, 1915!, 1965!, 2036!, Schlechter!, Stuhlmann 

 n. 7441!, 7470!). — Usaramo (Stuhlmann n. 7I30!). — Bagamoyo (Stuhlmann 

 n. 7236!, 7253!, 7276!). — Am Umbaflusse (Kassner n. 98!). — Amboni (Holst 



