251 



MELA8T0MACEAE : MACAIREA. 



252 



11. MACAIREA MULTINERVIA Benth. caule sim- 

 plici vel vix ramoso, teretiusculo , pilis rigidiusculis patulis 

 glanduliferis densiuscule longeque hirtello; foliis brevissime 

 petiolatis, ovato-suborbicularibus , leviter apiculatis, basi sub- 

 cordatis, margine leviter crenulatis, 7— 9-nerviis, supra lon- 

 giuscule subsparseque glanduloso-hirtellis, subtus dense bre- 

 viterque hirtello-tomentellis et glandulosis ; floribus breviuscule 

 pedicellatis, in ramis paniculae terminalibus alaribusque; ca- 

 lyce pilis glanduliferis patulis longiusculis densiuscule vestito, 

 tubo campanulato-ovoideo, segmentis linearibus, apice obtusius- 

 sulis apiculatisque, tubum subaequantibus ; petalis ovato-ellip- 

 ticis, apice rotundatis et minute apiculatis; staminibus satis 

 inaequalibus , filamentis glabris vel glabriusculis , counectivo 

 infra loculos longe vel breviuscule producto, basi leviter in- 

 crassato postice breviter bilobo; ovario 4- vel saepius 3-locu- 

 lari; stylo glabro, staminibus longioribus subbreviore. 



Macairea multinervia Benth.! in Hook. Journ. of Bot. 

 II. 292; Walp. Repert. II. 130; Triana Melast. 38. tab. II. 

 fig. 28 a, 



Tetrameris trivalvis Naud. I in Ann. Sc. nat. ser. 3. XIV. 

 121. tab. 4. fig. I et Melast. 213. 



Tibouchina multinervia Baill. in Adansonia XII. 75. 



Caulls erectus, robustus, rigidus, cinereo-fuscus , fere usque ad ba- 

 sira foliosus; rami pauci, patuli vel erecto-patnli, breves, graciles. Petio- 

 lus satis robustus, leviter compressus, supra vix canaliculars, densissime 

 longeque glanduloso-birtellus , 3 — 6 mm. longus. Folia plana vel plus 

 minusve plicata, erecto-patula , rigida, internodiis saepius paulo longiora, 

 supra intense viridia, subtus sordide cinerea leviter foveolata et transverse 

 valde nervulosa, 2 7* — 3 cm. longa et fere totidem lata, superiora satis 

 minora; nervis supra distincte impressis, subtus satis prominentibus et 

 densiuscule breviterque glanduloso-hirtellis, mediano robustiusculo, laterali- 

 bus paulo gracilioribus. Panicui.a laxiuscula, satis multiflora, inferne 

 foliosa, 7» — 1 dm. longa. Bracteae rigidiusculae , oblongae vel lanceo- 

 latae, apice acutae, inferne leviter attenuatae. margine longe ciliatae, supra 

 subglabrae, subtus densiuscule longeque glancluloso-pilosae, 2 — 4 mm. longae. 

 PediOELLI graciliusculi, leviter flexuosi, pilis patulis longiusculis glanduli- 

 feris densiuscule hirtelli, 4 — 7 mm. longi. Calyx cinereo-fuscus, tubo 

 teretiusculo, basi rotuudato, apice non vel leviter constricto, 3 mm. longo, 

 27» mm. lato, segmentis erecto - patulis , leviter flexuosis, 3 mm. longis, 

 basi ■/* — 1 mm. latis. Petala patula, vix asymmetrica utrinque sub lente 

 miuutissime punctato-papillosa, minutissime multinervia, basi subrotundata, 

 7 — 8 mm. longa, 4 — 5 mm. lata. Stamixum iilamenta subcapillaria, pur- 

 purascentia, satis flexuosa, 4 vel 6 mm. longa; antherae purpurascentes, 

 apice Havescentes, vix arcuatae, 37a vel 47a mm. longae, 8 /s mm. crassae, 

 connectivo infra loculos 17» vel 3 mm. longos producto, filiformi, leviter 

 arcuato, lohis basilaribus acutiusculis, adscendentibus. Ovarium ovoideum, 

 apice acutiusculum, inferne glabrum, superne breviuscule denseqne glan- 

 duloso-pilosum ; stylus filiformis, leviter sigmoideus, apice non attenuatus, 

 12—14 mm. longus. Capsula calyce persistente paulo longiora, pallide 

 fusca, ovoidea, leviter 3— 4-sulcata, ultra medium 3 — 4-valvis, 6—6 mm. 

 longa, 4 mm. crassa. Semina fulva, distincte cochleata, basi obtusa, apice 

 rotundata, sublaevia, dorso non tuberculata, 3 /* mm. longa, 2 /3 mm. crassa. 



Habitat in Guiana anglica prope Boraima : Schomburqk n. 188/5, 

 706, 1073 B. 



II. Folia supra glabra, laevia vel rarius leviter rugosa. — Spec. 12—16. 



12. MACAIREA THYRS1FLORA DC. caule tricho- 

 tome ramoso; ramis patulis, obscure tetragonis, pube ferru- 

 ginea adpressissima densiuscule vestitis, ad nodos longiuscule 

 setosis; foliis longe petiolatis, oblongo - ellipticis , apice acutis 

 vel obtusiusculis et distincte apiculatis, basi breviter attenua- 



tis, margine integerrimis et saepius leviter revolutis, supra 

 glabris riigosisque, subtus brevissime denseque villoso-tomen- 

 tellis et ad nervos nervulosque longiuscule adpresso- pilosis, 

 trinerviis, nervis lateralibus tenuibus marginibus proximis; 

 floribus mediocribus, breviter pedicellatis , in paniculam mag- 

 nam multifloram terminalem dispositis; calyce pilis ferrugineis 

 adpressis rigidiusculis longiusculis dense vestito, tubo cam- 

 panulato-oblongo, segmentis triangulari-ovatis, apice acutis et 

 in setam longiusculam abeuntibus, tubo multo brevioribus; 

 petalis oblongis vel ovato-oblongis, apice rotundatis; stamini- 

 bus valde inaequalibus, filamentis inferne glabriusculis superne 

 pilis glanduliferis brevissime denseque hirtellis, connectivo 

 infra loculos longissime vel breviter producto, basi satis in- 

 crassato, postice distincte gibboso ; ovario quadriloculari ; stylo 

 leviter hirtello, staminibus multo breviore. 



Macairea thyrsiflora DC. Prodr. III. 109 et 484; Naud. 

 in Ann. Sc. nat. ser. 3. XIII. 35 et Melast. 100; Triana 

 Melast. 38. 



Rami robustiusculi, elongati, leviter flexuosi. Petiolus satis gracilis, 

 subrectus , leviter compressus , supra distincte canalicnlatus , longiuscule 

 denseque adpresso-setulosus, 172 — 2 cm. longus. Folia subplana, patula, 

 rigid iuscula, internodiis saepius 2 — 3-plo longiora, supra atro-fusca, subtus 

 cinereo-ferruginea et transverse distincte nervulosa, 10 — 14 cm. longa, 

 3 — 5 cm. lata, superiora paulo minora, nervo mediano robustissimo, supra 

 satis impresso, subtus valde prominente , lateralibus supra vix perspicuis 

 subtus levissime prominentibus. Panicula subcompacta, 1 — 2 dm. longa. 

 Bracteolae membranaceae, subsessiles, lanceolatae vel lanceolato-lineares, 

 basi longiuscule attenuatae, apice acuminatae, uninerviae, supra subglabrae, 

 subtus longiuscule denseque ferrugineo-pilosae , 3 — 6 mm. longae. Peoi- 

 gelli filiformes, recti, breviuscule denseque adpresso-pilosi, 2—6 mm. longi. 

 Calyx ferrugineus, tubo teretiusculo, basi subrotundato, apice saepius leviter 

 constricto, 37» — 4 mm. longo, 2 mm. lato, segmentis patulis vel erecto-patulis, 

 172 — 2 mm. longis, basi 1 — 17a mm. latis. Petala patula, leviter asym- 

 metrica, utrinque glabra, margine saepius punctato-glandulosa, tenuissime 

 multinervia, basi leviter attenuata, 8 — 9 mm. longa, 4 mm. lata. Stami- 

 num majorum filamenta subcapillaria, purpurascentia , leviter flexuosa, 

 8 mm. longa ; antherae purpurascentes, apice pallidae et leviter attenuatae, 

 leviter arcuatae, 4 mm. longae, 7s mm. crassae, connectivo infra loculos 

 3 — 3^2 mm. longos producto, capillari, purpurascente, subrecto; staminum 

 minorum filamenta apice satis arcuata, 4 — 5 mm. longa,autherae372 — 4 mm. 

 longae, connectivo infra loculos 172 mm. longos producto, subfiliformi , le- 

 viter arcuato. Ovarium ovoideo-oblongum, fuscum, inferne leviter punctato- 

 glandulosum, apice longiuscule denseque glanduloso-papillosum , 172 mm. 

 longuni; stylus subfiliformis, purpurascens, inferne subrectus, superne satis 

 arcuatus et distincte attenuatus, 4 mm. longus. Capsula ovoidea, atro-fusca, 

 distincte 4-sulcata, apice leviter attenuata, 472 — 5 mm. longa, 3 mm. 

 crassa. Semina perfecta ignota. 



Habitat in Brasilia probabiliter Amazonica , sed loco speciali haud 

 indicato: Bonpland ; prope S. Carlos prov. do Alto Amazonas: Spruce 

 n. 2952, 2953. — Floret Martio- Aprili. 



13. MACAIREA RUFESCENS DC. caule trichotome 

 ramoso; ramis obscure tetragonis, pilis rufescentibus rigidius- 

 culis elongatis adpressissimis dense vestitis, ad nodos longis- 

 sime et densissime pilosis; foliis longiuscule petiolatis, valde 

 coriaceis, oblongis vel obovato-oblongis, apice acutis vel rarius 

 obtusiusculis, basi leviter attenuatis, margine integerrimis et 

 saepius leviter revolutis, supra glaberrimis laevibusque, subtus 

 brevissime denseque puberulis subsparse glanduloso-punctatis 

 et pilis elongatis rigidiusculis subsparsis adpressissimis inter- 

 mixtis, trinerviis, nervis lateralibus tenuibus marginibus pro- 

 ximis; floribus mediocribus, breviter pedicellatis, in paniculam 



