Acidoton, Platygyne. 27 



rims WiM. ex Klotzsch in Endl. Gen. Suppl. IV. 3. (I850) 88. — Acanthocaulon pru- 

 ricus Klotzsch ex Endl. Gen. Suppl. IV, 3. (18öO) 88. — Frutex volubilis; ramuli tenues, 

 juveniles rufo-tomentosi, mox glabrescentes. Petiolus 3 — 8 mm longus, rufo-tomenlosus; 

 limbus 3 — l^j^ cm longus, 8 — 30 mm latus, linearis vel lineari-ellipticus vel lineari- 

 obovatus, apice truncatus, basi emarginatus, sinuato- vel repando-dentatus vel denticulatus, 

 chartaceus, supra stimulosus et ad nervös pubescens, subtus molliter pubescens; costae 

 seeundariae utrinque ö — 6; stipulae 1 — 2 mm longae, subpersistentes, durae. Inflores- 

 centiae cf circ. 7 mm longae, Q < 1/2 — 2 cm attingentes, utriusque sexus tomentosae; 

 pedicelli (j^ ad 5 mm longi, tenues; bracteae Q d= 3 mm longae, ovatae, acuminatae, 

 \ — 2-florae; pedicelli ^ \ — 2 mm longi, quam (j^ robustiores. Sepala (j^ lanceolata, 

 2 — 2V2 'f"™ longa, acuta, rufo-tomentosa; ovarium setoso-stimulosura ; styli ad 3 mm 

 longi. Capsula 7 mm lata, 4Y2 "^"^^ longa, tomentosa et stimulosa. Semina 3 — 4 mm 

 diametientia, globulosa, pallida, fusco-reticulato-marmorata, ecarunculata. — Fig. 8A — G. 

 Westindische Provinz: Cuba (Combs n. 40!, Eggers n. 46H!, Humboldt 

 n. 5265!, Linden n. <957!, 0tto n. 315!, Pavon, Pöppig!, Ramon de la Sagra 

 n. 22, 310!, 354!, Wright n. 557!). 



Ä. Anabaenella *) Pax et k. Hoffm. 



Anabaena Juss. Euphorb. Tent. (1824) 46, t. < 5, f. 48; Endl. Gen. (<836— 40) 

 HH. — Plukenetia Sect. Anabaena Müll. Arg. in Linnaea XXXIV. (1865) 158; in 

 DG. Prodr. XV. 2. (1866) 771; in Fl. Bras. XI. 2. (18 74) 335; Benth. in Benth. et 

 Hook. f. Gen. III. (1880) 328; Pax in Engler u. Prantl, Pflzfam. HI. 5. (1890) 67. — 

 Sajorium Sect. Anabaena Baill. Etud. gen. Euphorb. (1858) 484. 



Flores monoici, apetali. Calyx (^ in alabasti-o cylindrico-ovoideus, acutus, per an- 

 Ihesin valvatim 5-partitus. Stamina 10, exteriora 5 alternisepala; filamenta libera; 

 anlherae quadrilobae, primum terminales, deinde inflexae, extrorsae vel introrsae. Re- 

 ceptaculum inter stamina exteriora gibboso-prominens, glandulosum et glandulas epi- 

 sepalas simulans, vertice laeve et ovarii rudimentum filiforme, apice incrassatum, his- 

 pidulum gerens. Sepala Q. 5 — 6, angusta. Discus nullus. Ovarium laeve, triloculare. 

 Styli in columnam clavatam, apice 3-lobam, basi articulatam connati; lobi erecti. Ovula 

 in loculis solitaria. Capsula laevis, obtuse trigona; mesocarpium subcarnosum, siccum 

 iacile secedens; epicarpium siccum rugosum. Semina ecarunculata, subcompressa; albumen 

 carnosum; cotyledones latae, planae. — Frutices scandentes, habitu Dioscorearum. Folia 

 alterna, petiolata, cordato-triangularia, palmatinervia, basi biglandulosa, subtus promi- 

 nenter maculari-glandulosa. Racemi axillares, basi flores Q 1 vel 2 gerentes, ceterum (f. 



Nota. Genus hie restitutura a cl. Jussieu et Endlicher rite recognitum, a Plukenetia, 

 quacum ab autoribus recentioribus conjunetum erat, valde distat structura florum utriusque sexus, 

 l;;ibitu aulem cum Plukenetia congruit. — Anabaena, genus Schizophycearum, prioritate gaudct; 

 nomen ideoque mulandum erat. 



Species unica brasiliensis. 



A. tamnoides (Juss.) Pax et K. Hoffm. — Anabaena tamnoides Juss. Euph. Tent. 

 (1824) 46, t. 15, f. 48. — Croton scandens Vell. Fl. Flum. X. (1827) t. 72 ex Müll. 

 Arg. — Sajorium tamnoides Baill. Etud. gen. Euphorb. (1858) 484. — Plulcenetia 

 OGcidentalis Leandro ex Baill. I. c. — Plulcenetia tamnoides Müll. Arg. in Linnaea XXXIV. 

 (1865) 158; in DC. Prodr. XV. 2. (I866) 771; in Fl. Bras. XL 2. (1874) 335. — 

 Gaules superne longius vlx lignosi, tenues, apice rubescentes, rarius glabri. Petiolus 

 2 — 7 cm longus, pubescens vel glaber; limbus 5 — 11 cm longus, 4 — 8^2 ^in latus, 

 triangulari- vel orbiculari-ovatus, acuminatus, basi aperte cordatus, margine inferne vel 

 undique saepius obiter vel distincte, imo grossiuscule repando-dentatus, superne integer, 

 tcnuiter membranaceus, juvenilis dt puberulus, demum saltem supra glabratus vel jam 

 juvenilis glaber, basi 1- saepius 2-glandulosus, 3 — 5-nervius; glandulae hypophyllae 

 orbiculares, lutescenti-brunneae; stipulae vix 1 mm longae, triangulari-lanceolalae. Racemi 



*) ui'dßub'u} — scando; nomen dalum propter habitum scandentera. 



