445 



MELASTOMACEAE : MARCETIA. 



446 



glanduloso-hirtellus, vix 1 mm. longus. Folia patula vel erecto-patula, 

 internodiis 2— 3-plo longiora, supra laete vel intense viridia et minutis- 

 sime creberrimeque granulata, subtus sordide cinerea, 8—10 mm. longa, 

 2V2 — 4 mm. lata, ramealia saepius paulo breviora et satis augustiora; 

 nervis gracillimis, supra tenuissime impressis, subtus vix prominentibus, 

 mediano paulo crassiore. Pedicelli filiformes, rigidiuscnli, breviter dense- 

 que glanduloso-hirtelli, 2—3 mm. longi. Calyx sordide fuscns vel purpu- 

 rascens, tubo obscure 8-nervio, basi subrotundato, apice non vel vix con- 

 stricto, 4 mm. longo, 2 x /2— 3 mm. lato, segmentis erectis, rigidiusculis, 

 3 mm. longis, basi vix 1 mm. latis. Petal a patula, rosea, utrinque 

 glabra, obscure reticulato-multinervia, 7 — 8 mm. longa, 6 mm. lata. Sta- 

 minum filamenta capillaria, subrecta, 5 vel 6 mm. longa; antherae purpu- 

 raseentes, leviter arcuatae, apice flavae et longiuscule attenuatae, 4 vel 

 4V2 mm. longae, basi 2 /3 mm. crassae. Ovarium ovoideo-cylindricum, apice 

 subtruncatum, 2 mm. longum; stylus subcapillaris, purpurascens , satis 

 sigmoideo-flexuosus, superne leviter attenuatus, 11— 12 mm. longus. Cap- 

 sula pallide fusca, ovoidea, leviter 4-snlcata, usque ultra medium 4-par- 

 tita, 4 mm. longa, 3 mm. crassa. Semina pallide fusca, valde cochleata, 

 satis compressa, apice rotnndata, basi acuta, creberrime minuteqne foveo- 

 lata, dorso non tuberculata, 2 /s mm. longa, */• mm l a * a > 



Habitat in prov. Minas Geraes ad Serra de S. Antonio: Martius; 

 ad Serro Frio inter Ouro Preto et Diamantina : Martius ; prope Dia- 

 mantina: Vauthier n. 27; in arenosis ad Ouro Preto: Schott et Schiich 

 n. 1240, 4161, 4162; in siccis moniosis altis ad Alto do Morro Ouro 

 Branco: PoM n. 3721; ad Serra da Piedade: Netto ; in prov. Minas 

 Geraes, loco Jiaud indicato: St-HUaire B 1 n. 1185. — Floret Novembri 

 ad Martium. 



6. MARCETIA CORDIGERA DC. fruticosa; caule 

 erecto, teretiusculo, trichotome ramosissimo, densiuscule bre- 

 viterque hirtello-glanduloso, demum glabro et inferne plus 

 minusve excoriato; ramis acutiuscule tetragonis, longiuscule 

 denseque glanduloso-hirtellis; foliis sessilibus, submembrana- 

 ceis rigidisque, triangulari-ovatis , basi profunde emarginato- 

 cordatis, apice saepius acutis, marginibus integerrimis junio- 

 ribus valde revolutis demum planis, 3 — 5-nerviis, utrinque 

 brevissime et densiuscule glanduloso-pilosis demum glabrius- 

 culis, supra minutissime creberrimeque punctulatis; floribus 

 brevissime pedicellatis, axillaribus, solitariis, saepe in racemum 

 foliaceum digestis ; calyce brevissime et densiuscule glanduloso- 

 piloso, tubo ovoideo-campanulato , segmentis lineari-subulatis, 

 apice acutissimis, basi remotis, tubo paulo brevioribus ; petalis 

 obovato-oblongis, leviter asymmetricis, apice rotundatis et 

 oblique mucronulatis ; staminibus satis inaequalibus, longius- 

 cule exsertis. 



Marcetia cordigera DC! Prodr. III. 124; Naud. in 

 Ann. Sc. nat. ser. 3. XV. 45 et Melast. 260. 



Bhexia cordigera Mart, et Schrank! Msc. ex DC. I. c. 



Marcetia excoriata Cham.! in Linnaea IX. 401 (non DC). 



Marcetia andicola Naud.! in Ann. Sc. nat. ser. 3. XV. 

 44 et Melast. 259; Triana, Melast. 50. 



Marcetia decussata Maund, Dot. V. t. 223. 



Marcetia taxifolia Triana! Melast. 50 (pro parte, — 

 non DC). 



Caulis satis gracilis, rigidiusculus, pallide fuscus, inferne denudatus 

 et saepius simplex, superne ramosissimus, 4— dm. altus; rami graciles, 

 erecto-patuli, longiusculi, sordide cinerei. Folia patula vel interdum snb- 

 reflexa, internodiis saepius duplo longiora, supra intense viridia, subtus 

 viridi-cinerea, 7—9 mm. longa, 6—8 mm. lata, ramealia saepius satis mi- 

 nora; nervis tenuissiniis, supra vix perspicuis, subtus leviter prominentibus, 

 mediano paulo crassiore. Pedicelli filiformes, rigidiusculi , leviter glan- 

 duloso-hirtelli, 1—2 mm. longi. Calyx cinereo- fuscus, tubo tenuissime 



Melastom. 



8-striato, basi subrotundato, apice leviter constricto, 3 mm. longo, 2 mm. 

 lato, segmentis erectis, rigidiusculis, 2 mm. longis, basi V2 mm. latis. 

 Petala patula, flava, utrinque glabra, uninervia et obscure reticulato- 

 venia, 5 — 6 mm. longa, 4 mm. lata. Staminum filamenta tenuissima, pur- 

 purea, subrecta, 4 vel 5 mm. longa; antherae flavae, subrectae, apice lon- 

 giuscule attenuatae, basi subhastatae, 2V2 vel 3 mm. longae, vix */2 mm. 

 crassae. Ovarium ovoideum, l 1 /* mm. longum; stylus capillaris, purpureus, 

 subrectus, superne vix incrassatus, 9 mm. longus. Capsula fusca, sub- 

 globosa, tenuissime 4-sulcata, 2V2 — 3 mm. crassa. Semina pallide fulva, 

 valde cochleata, satis compressa, apice rotnndata, basi obtusa, minutissime 

 et creberrime foveolata, dorso non tuberculata, */« mm. longa, 2 /s mm. lata. 



Var. (3. andicola Cogn. 

 Marcetia andicola Naud.! I. c. 



Caulis et ramuli inferne longiore denudati; rami saepius erecti, 

 subfastigiati. Folia rigida, erecto-patula, internodiis triplo longiora, saepius 

 subglabrata. Flores lilacini vel violacei. 



Habitat in alpestribus montium prope Caitete, Rio das Contas et 

 Sincora prov. Bahia: Martius; in prov. Minas Geraes: Gardner n. 4627 ; 

 in arenosis ad Serra do Frio: Vauthier n. 26 bis ; in saxosis umbrosis 

 montis Itacolumi: Riedel n. 9: ad Caxoeira do Campo: Claussen n. 189; 

 ad Serra de Ouro Preto : Claussen n. 34 ; ad Sei-ra de Lenteiro : Sello 

 n. 900; inter Rio de Janeiro et Campos: Sello n. 28 et 161; in Brasilia 

 loco haud indicato: Sello n. 422. — Var. p. in Venezuela: Wagner 

 n. 123; in prov. Merida altit. 2300 m.: Funck et Scldim n. 1014, 1200; 

 inter Truxillo et Merida: Linden n. 359. — Floret Maio—Octobri. 



^> 7. MARCETIA TAXIFOLIA DC. fruticosa; caule 

 erecto rarissime decumbente, teretiusculo, irregulariter ramo- 

 sissimo, densiuscule breviterque glanduloso-hirtello demum 

 subglabro et inferne plus minusve excoriato; ramis acute 

 tetragonis, longiuscule denseque glanduloso-hirtellis; foliis 

 subsessilibus, submembranaceis rigidisque, oblongo-triangula- 

 ribus marginibus revolutis fere linearibus, basi cordatis, apice 

 acutiusculis, margine integerrimis, trinerviis, utrinque sae- 

 pissime densiuscule breviterque glanduloso-hirtellis praecipue 

 supra; floribus brevissime pedicellatis, axillaribus, solitariis, 

 saepe in racemum foliosum digestis; calyce brevissime et 

 densiuscule glanduloso-hirtello, tubo campanulato-ovoideo, seg- 

 mentis lineari-subulatis, apice acutissimis, basi remotis, tubum 

 subaequantibus ; petalis obovato-oblongis, valde asymmetricis, 

 apice acutis et oblique mucronatis, margine non ciliatis; sta- 

 minibus subaequalibus, longe exsertis. 



Marcetia taxifolia DC! Prodr. III. 124 (excl. var. $.); 

 Cham, in Linnaea IX. 401; Benth. in Hook. Journ. of Dot. 



II. 295; Triana, Melast. 50. tab. III. f. 34 a (excl. syn.). 



Bhexia taxifolia St-Hil.! in Bonpl. Bhex. 150. tab. 57. 

 Marcetia glandulosa DC.! et M. pubescens DC! Prodr. 



III. 124; Triana, Melast. 50. 



Bhexia qnadrivalvis Mart. ! Herb, ex DC I. c. 

 Bhexia Langsdorffiana Kunth! ex DC I. c. 



Caulis erectus, satis robustns, rigidiusculus, testaceus, inferne de- 

 nudatus, saepius fere usque ad basin ramosissimus, — 12 dm. altus; rami 

 satis graciles, saepius erecti, elongati, saepius valde ramnlosi, fusceseentes. 

 Petiolus crassiu8culns, compressus, '/* — 1 mm. longus. Folia saepius 

 erecto-patula, internodiis duplo longiora, utrinque densiuscule breviterque 

 glanduloso-hirtella, supra intense viridia, snbtus paulo pallidiora, 7 ad 

 12 mm. longa, 3 — mm. lata, ramealia saepius multo minora et angu 

 stiora; nervis tenuissimis, supra vix vel non perspicuis, subtus paulo pro- 

 minentibus, mediano satis crassiore. Pedicelli subfiliformes , dense hir- 

 telli, rigidiusculi, 1 — 2 mm. longi. Calyx cinereo-fuscus, tubo enervio, 



57 



