6ß F. Pax. — Euphorbiaceae-Acalyphoac-Plukeneliinae. 



Sect. 6. Agirta Baill. 



Tragia Sect. Agirta Baill. Etud. gen. Euphorb. (1858) 463; Müll. Arg. in Linnaea 

 XXXIV. (1865) i83, in DC. Prodr. XV. 2. (1866) 946; ßcnth. in Bentb. et Hook. f. 

 Gen. III. (1880) 329; Pax in Engler u. Prantl, Pflzfam. III. 5. (1890) 64. 



Sepala q^ 3. Discus nullus. Stamina 3 ; filamenta subnulla ; antherae introrsae, 

 extrorsum reflexae, longitudinaliter debiscentes. Ovarii rudimentum nulluni. Sepala C_ 

 5 — 6, indivisa, levissime denticulata. 



Die Sektion ist durchweg auf das madagassische Gebiet beschränkt. 



Clavis specierum. 



A. Bracteae florigerae omnes conformes. 



a. Flores fasciculati. Folia integra 59. T. Boiviniana. 



b. Flores solitarii. Folia crcbre et minute dentata . . . 60. 71 Baroniana. 



B. Bracteae florigerae inferiores cetoris multo majores. 



a. Folia ovata vel suborbicularia 61. 71 cocctilifolia. 



b. Folia triangulari-ovata 62. 7". imerinica. 



59. T. Boiviniana (Baill.) Müll. Arg. in Linnaea XXXIV. (1865) 183, in DC. 

 Prodr. XV. 2. (1866) 946. — Agirta Boiviniana Baill. Etud. gen. Euphorb. (1858) 

 463. — Arbuscula; rami striati, juveniles hispidulo-pubescentes, deinde glabrati, graciles. 

 Petiolus V2 — ^ coi longus, puberulus; limbus 8 — 13 cm longus, 3 — 5 cm latus, ob- 

 longus vel elliptico-lanceolatus, acuminatus, mucronulatus, basin versus attenuatus, ima 

 basi obtusus, integer, in costis et ad marginem hispido-puberulus, deinde glabrescens, 

 reticulato-venosus, penninervius; costae secundariae utrinque 5 — 7; stipulae 2 — 6 mm 

 longae, lanceolato-subulatae. Racemi oppositifolii , filiformes, longissimi, visi ulti'a 

 30 cm longi, hispidulo-pubescentes, inferne longe nudi, subpauciflori ; bracteae lineares 

 vel lineari-lanceolatae, 2 — 3 mm longae, incurvae, depauperato-fasciculiflorae, inferiores 

 Q j superiores (^ ; pedicelli (J^ fere 2 mm longi, Q breviores, sub fructu 7 mm attin- 

 gentes. Caljx q^ subdepresso-globosus, apertus 4 mm latus; sepala suborbicularia, 

 acuta. Sepala Q anguste lanceolata, minute glanduloso-denticulata ; ovarium hispi- 

 dulum; styli 2Y4 mm longi, basi connati, superne patuli, intus breviter et dense pa- 

 pillosi. Capsula tridyma, hispidula, coccis 5 mm longis. Semina globosa, 4Y2 mm 

 diametientia, dilute brunnea, fusco-marmorata. — Fig. 17^ — B. 



Madagassisches Gebiet: Nossibe (Boivin n. 2177^, Hildebrandt n. 3179!). 



60. T. Baroniana Prain in Kew Bull. (1912) 335. — Frutex; rami suberecti, 

 lignosi, dense rufo-puberuli. Petiolus 4 — 5 mm longus; limbus 6 — 10 cm longus, 3 — 

 l cm latus, ellipticus, acutus, basi late cuneatus'vel rotundatus, crebre denticulatus, 

 utrinque adpresse cinereo-pubescens ; stipulae 3 mm longae, lanceolatae, cum petiolo 

 rufo-puberulae. Racemi terminales et oppositifolü, 6 — 10 cm longi, inferne Q\ flores 

 utriusque sexus fere sessiles, in axillis bractearum solitarii; bracteae ovato-lanceolatae, 

 acutae. Sepala (^ ovata, subacuta, extus dense pubescentia. Sepala Q sacpius 3, 

 breviter utrinsecus 6-lobulata, extus pubescentia; ovarium velutinum; styli basi connati. 

 Capsula cinereo-pubescens. Semina globosa, brunnea, albo-maculata. 



Madagaskar: Zentral-Madagaskar (Baron n. 2712). 



Nota. Speciem non vidimus. E descriptione cl. autoris a T. Boiviniana valdo distal. 



61. T. coccnlifolia Prain in Kew Bull. (1912^) 335. — Frutex; rami suberecti, 

 lignosi, striati vel subvolubiles ; ramuli dense pubescentes. Petiolus 1 Y2 — 2^2^111 

 longus, pubescens; limbus 4 — 6 cm longus, 2 — 4Y2 cm latus, late oblongus vel ovatus 

 vel suborbicularis, obtusus vel acutus, basi parum cordatus, integer vel subundulatus, 

 reticulato-venosus, secus nervös pilis patentibus elongatis dense strigosus; stipulae fal- 

 catae, erectae, 4 mm longae. Racemi (^ terminales, 4 — 5 cm longi, pedunculo dense 

 pubescente, perbrevi suffulti; bracteae lineari-spathulatae, acutae, subcucullatae, 2 mm 

 longae, 3-florae; bractea infima fere basalis, foliacca, suborbicularis, 5 — 7 mm diame- 

 tiens, florem (^ unicum ceteris paulo majorem gerens. Sepala (J' saepius 3, nonnun- 



