|g F. Pax. — Euphorbiaceac-Cluytieae. 



2. Folia basi Iriplinervia 6. 0. paniculatus. 



ß. Capsula muricata 1.0. muricatus. 



b. Petala q? intus appendiculata 8. 0. appendiculatus. 



B. Folia disticha; limbus basi eglandulosus. Flores c? in axillis 



foliorum glomerulato-fasciculati Sect. 2. Geloniastrum Müll. Arg. 



Huc pertinet 9. 0. Helferi. 



C. Species quoad affinitatem dubia 1 0. 0. collinus. 



Sect. 1 . Desmostemon (Thwait.) Pax. 



Ostodes Sect. Euostodes Müll. Arg. in Linnaea XXXIV. (18 65) 214; in DC. Prodr. 

 XV. 2. (1866) 1114. - - Desmostemon Thwait. Enum. pl. Zejl. (18 01) 278. — Trigono- 

 stemon Sect. Gheilosopsis Müll. Arg. in Linnaea XXXI V. (1865) 213; in DG. Prodr. XV. 

 2. (1866) 1106. 



Flores q? paniculati. Folia basi stipellari-biglandulosa. 



1. 0. macrophyllus (Müll. Arg.) Benth. in Benth. et Hook. f. Gen. III. (4 880) 

 2 9 9. — Tritaxis macrophylla Müll. Arg. in Flora XLVII. (186 4) 482. — Trigono- 

 stemon macrophyllus Müll. Arg. in Linnaea XXXIV. (1865) 213; in DC. Prodr. XV. 2. 

 (1866) 1106. — Arbor 20 — 25 m alta; ramuli validi, superne cum foliis jüvenilibus 

 et rhachi inflorescentiae pilis stellatis minutis ferrugineo-tomentelli, mox glabrati. 

 Petiolus 1—8 cm longus, apice tumidus; limbus 20 — 50 cm longus, rarius minor, 

 8 — 13 cm latus, subcoriaceus, obovato-lanceolatus, acuminatus, basi acutus et biglandu- 

 losus, penninervius, distanter glanduloso-serrulatus; costae secundariae utrinque dz 1 7 — 1 8; 

 stipulae lanceolato-subulatae, 7 mm longae. Paniculae q? terminales, racemiformes vel" 

 inferne pauciramosae, folia aequantes vel superantes; rami ex maxima parte valde ab- 

 breviati, quasi ad fasciculum florum reducti; bracteae multiflorae, parvae; pedicelli q 1 

 calycem aequantes. Flores lutei. Calyx q? 3V2 mm longus; lobi concavi, rigidi, 

 ferrugineo-pubescentes, ovati; petala 6 mm longa, glabra; stamina 12 — 15; 5 exteriora 

 libera, cetera in columnam irregulariter connata; discus urceolaris, profunde lobatus, 

 pilosus. 



Südwestmalayische Provinz: Malacca (Griffith n. 4788!, King's Collector 

 n. 4940!, Maingay n. 1397!, Ridley n. 1061!). 



2. 0. zeylanicus (Thwait.) Müll. Arg. in Linnaea XXXIV. (1865) 214; in DC. 

 Prodr. XV. 2. (1866) 1114; Hook. f. Fl. Brit. India V. (1887) 4 00. — Desmostemon 

 zeylanicus Thwait. Enum. pl. zeyl. (1861) 278; Beddome in Transact. Linn. Soc. 

 London XXV. (1 866) 225 t. 27; Fl. Sylvat. t. 247. — Arbor; ramuli validi, angulosi, 

 cum reliquis partibus jüvenilibus sublepidoto-ferrugineo-furfurelli. Petioli 2 — '1 5 cm 

 longi, basi et apice tumidi; limbus 8 —35 cm longus, 6 — 12 cm latus, elliptico-lanceo- 

 latus vel lanceolato-ovatus, utrinque acutus vel apice acuminatus, margine distanter 

 glanduloso-serratus, basi stipellari-biglandulosus, subcoriaceus, mox glabratus; costae 

 secundariae utrinque dz 10—11. Inflorescentiae magnae, folia aequantes, pendulae, 

 (j 1 anguste paniculatae, subglomeruliflorae, Q racemosae; bracteae parvae; pedicelli 

 calycem aequantes. Calyx q^ 4 — 5 mm latus, Q major, utriusque sexus ferrugineo- 

 lepidotus; petala late elliptica, glabra; disci glandulae intus hispidae; stamina =b 15, 

 5 exteriora libera, reliqua monadelpha; ovarium tomentellum. Capsula 3Y2 cm lata., 

 fulvo-vestita. — Fig. 5. 



Vorderindisches Gebiet, Provinz des westlichen Gebirgslandes der 

 Malabarküste und Provinz Ceylon. — Travancore, 600 — 1000 m (Beddome). 

 Ceylon, häufig an trockeneren Stellen im Innern, bis 1300 m emporsteigend (Thwaites 

 n. 2160!, Walker!), Peradenya, botan. Garten (Engler n. 366l!, Hosseus n. 7!). 



Einheim. Name: Wal-Kekuna (Sing.). 



3. 0. thyrsanthus Pax n. spec. — Arbor ad 1 m alta; ramuli juveniles adpresse 

 pubescentes. Petioli glabrati, 8 — 16 cm longi, graciles; limbus membranaceus, ad 



