Mabea. 35 



supra canaliculatus; limbus 5 — 9 cm longus, 2 — 4 cm latus, ellipticus, acuminatus, 

 basi acutus, integer, concolor, glaber, nitidus, tenuitei* reticulatus, basi subtus glandulis 

 marginalibus 2, \ — 2 mm longis, atro-fuscis ornatus. Paniculae ± 8 cm longae, 

 2 — 272 cm latae, laxe multiflorae; ramuli (j^ 2 — 3 mm longi, umbellatim 3-flori, 

 prope basin grosse biglandulosi; pedicelli (^ 5 — 10 mm longi, Q demum 15 mm 

 attingentes, cum rhachi inflorescentiae brevissime et parce cinereo-tomentelli. Flores 

 albidi. Sepala rf semiorbicularia, obtusa, Q triangulari-ovata, acuminata, eglandulosa, 

 3 mm longa, tomentella; stamina ±30; ovarium inerme, cinereo-tomentellum; columna 

 stylaris 3Y2 ™"^ longa, partem liberam stjlorum paulo tantum superans vel aequans. 

 Capsula (juvenilis) cinereo-tomentella, laevis. 



Cisäquatoriale Savannenprovinz: Britisch Guyana, an den Abhängen des 

 Roraima (Schomburgk n. 731, H09!). 



Nota. Certissime affinis est M. occidentali, sed foliis concoloribus, basi validiuscule 

 biglandulosis diversa; insuper indumentum cinereum et columna stylaris insigniter brevis. 



12. M. subserrulata Spruce ex Benth. in Hook. Journ. Bot. VI. (1854) 366; 

 Müll. Arg. in DC. Prodr. XV. 2. (I866) 1152; in Fl. Bras. XI. 2. (1874) 523. — 

 Arbor 6 m alta, gracilis, tota praeter inflorescentiam parce et minute rufo-puberulam 

 omnino glabra; ramuli graciles, fusco-nigricantes. Petiolus 6 — 9 mm longus, rigidulus; 

 limbus 10 cm longus, 3 — 5^2 cm latus, oblongo- vel lanceolato-obovatus vel oblongo- 

 ellipticus, apice obtuso breviter apiculatus, basi subobtusus, margine fere integer, 

 teniuscule coriaceus, supra nitidus, fusco-nigricans, subtus pallidior, olivaceo-fuscescens, 

 utrinque prominenter reticulato-venosus; costae secundariae et venae validiusculae. 

 Paniculae circ. 1 4 mm latae vel basi latiores, inferne nudae, parte florifera dimidium 

 limbum foliorum longitudine aequantes ; ramuli (^ umbellatim 3 — 5-flori, longius supra 

 basin validiuscule biglandulosi ; bracteae ovatae, longius acuminatae ; pedicelli (^ 3 Y2 ™ni 

 longi vel breviores, saepissime in pedunculis umbellularum axin versus incurvi. Flores 

 (^ 1 Y3 mm diametientes; stamina 20 — 27; antherae sessiles, tomentellae; connectivum 

 latum, subacutum; sepala Q inaequalia, interiora 3 mm longa; columna stylaris 4 — 5 mm 

 longa, parte libera stylorum dimidio longior. Capsula ovoideo-globosa, leviter trigona. 

 non sulcata, apice acutiuscula, 1 8 mm fere longa, 1 6 mm lata. Semina 1 mm longa, 

 7 mm lata, intus obtuse trigona, obscure fumoso-fusca. 



Provinz des Amazonenstroms: Alto Amazonas, in den Catingas bei Panure 

 am Rio Uaupes (Spruce n. 2500). 



Nota. Speciem non vidi. 



n. M. piriri Aubl. Hist. pl. Guyan. IL (1775) 867 t. 334, f. 1; Benth. in Hook. 

 Journ. Bot. VI. (1854) 364. — M. piriri va.r. genuina Müll. Arg. in DC. Prodr. XV. 2. 

 (1866) 1150 ex parte. — M. surinamensis Klotzsch in Schomburgk, Reis, Brit, Guyan, 

 III. (1848) 1 185 (nomen). — Arbor; ramuli graciles, glabri. Petiolus 5 — 10 mm longus, 

 gracilis; limbus 8 — 10 cm longus, 2Y2 — 3^2 cm latus, lanceolatus vel obovato-lanceolatus, 

 cuspidato-acuminatus, basi acutus vel obtusus, supra subopacus, fusco-nigricans, subtus 

 zt caesio - glaucus , reticulato-venosus, firme membranaceus , margine subserrulatus. 

 Paniculae 2 — 3 cm latae, pedunculatae, parte florifera circ. 7 cm longae; ramuli (^ 

 umbellatim 3-flori, longius supra basin biglandulosi, cum rhachi inflorescentiae et pedicellis 

 tenuissime puberuli, gracillimi, 5 mm fere longi; pedicelli (j^ gracillimi, 6 — 10 mm longi, 

 Q 6 — 8 mm attingentes, demum longiores. Flores candidi, parvi, r^ 2 mm fere diame- 

 tientes; sepala (^ triangularia, acuta, Q lanceolato-ovata, acuminata, 272"^^ attingentia, 

 eglandulosa; stamina 15 — 20, rarius pauciora (13) vel numerosiora (ad 26); columna sty- 

 laris 7 — 8 mm longa, partem liberam stylorum dr aequans, cum ovario laevi cinereo-puberula, 



Cisäquatoriale Savannenprovinz: Niederländ. Guyana, Surinam (Host- 

 mann n. 409!, 1320!). Britisch Guyana, Barima River (Jenman n. 6999!). 

 Venezolan. Guyana, Miraflores (Passarge u. Selwyn n. 698!). Am Orinoko 

 (Lehmann n. 8783!). 



14. M, brasiliensis Müll. Arg. in DC. Prodr. XV. 2, (1866) 1151; in Fl. Bras, 

 XL 2. (1874) 523. — Arbor 6 — 10 m alta vel frutex elatior; ramuli tenues, fusco- 



3* 



