443 



MELASTOMACEAE : MARCETIA. 



444 



rotundata, basi oblique subtruncata, dorso leviter tuberculata, 2 /s mm. 

 longa, Y* mm. lata. 



Habitat ad Serra da Jacobina in prov. Bahia: Blanchet n. 2605. 



3. MAECETIA CANESCENS Naud. suffrutescens vel 

 frutescens; caule erecto vel adscendente, teretiusculo vel ob- 

 scure tetragono, valde irregulariterque ramoso, brevissime et 

 densiuscule piloso demum glabro ; ramis acutiuscule tetragonis, 

 breviuscule denseque glanduloso-hirtellis ; foliis planis, mem- 

 branaceis, breviter petiolatis, ovatis vel late ellipticis, basi 

 subrotundatis vel interdum ad petiolum breviter attenuatis, 

 apice acutiusculis , margine tenuissime serrulatis, trinerviis, 

 supra brevissime sparseque pilosis et creberrime et minutis- 

 sime impresso-punctatis , subtus brevissime denseque hirtellis 

 praecipue ad nervos ; floribus breviter pedicellatis, ebracteatis, 

 ad apices ramulorum solitariis — ternis ; calyce brevissime den- 

 seque glanduloso-hirtello , tubo latiuscule campanulato, seg- 

 mentis triangulari-linearibus, apice acutis, basi remotiusculis, 

 tubum aequantibus; petalis obovatis, apice subrotundatis et 

 minute apiculatis, margine subsparse breviterque glanduloso- 

 ciliatis; staminibus aequalibus, inclusis. 



Tabula nostra C. Fig. 1 (habitus cum analysi). 



Marcetia canescens Naud./ in Ann. Sc. nat. ser. 3. XV. 

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



Caulis satis gracilis, usque ad basin ramosus, fulvus vel purpura- 

 scens, basi demum saepius exeoriatus, 4 — 6 dm. altus; rami subfiliformes, 

 breviusculi, rigidiusculi, patuli vel erecto-patuli, cinereo-fusci. Petiolus 

 filiformis, breviuscule birtellus, 1 — 2 mm. longus. Folia rigidiuscula, pa- 

 tula, internodiis saepius subduplo breviora rarius paulo longiora, supra 

 laete vel pallide cinerea, subtus canesccuti-cinerea, 7 — 9 mm. longa, 4 ad 

 6 mm. lata, ramealia saepius multo minora, nervis gracilibus, supra vix 

 impressis, subtus satis prominentibus, mediano paulo crassiore. Pedicelli 

 subfiliformes, rigidiusculi, saepius leviter arcuati, tenuiter striata, dense 

 breviterque gland uloso-hirtelli, 2 — 3 nun. longi. Calyx canescenti-cinereus, 

 tubo minute 8-costato, basi subrotundato, apice leviter constricto, 3 mm. 

 longo et apice fere totidem lato, segmentis erectis vel erecto-patulis, levi- 

 ter flexuosis, 3 mm. longis, basi 1 — l l /s mm. latis. Petal a purpurea, 

 patula, utrinque glabra, tenuiter plurinervia, 7 — -8 mm. longa, 5 — G mm. 

 lata. Staminum filameuta purpurea, subcapillaria, leviter flexuosa, 3 mm. 

 longa; antherae purpurascentes, subrectae, superne pallidiores et paulo 

 attenuatae, 372 mm. longae, 2 /s nun. crassae. Ovarium ovoideum, leviter 

 4-sulcatum, apice subtruncatum, l 1 /* mm. longum; stylus subcapiUaris, 

 purpureus, leviter sigmoideo-flexuosus, apice valde arcuatus et non incras- 

 satus, 7 mm. longus. Capsula ovoideo-subglobosa, pallide fusca, profunde 

 4-sulcata, 4 mm. crassa. Semina fusca, valde cochleata, satis compressa, 

 apice rotnndata, basi obtusiuscula , creberrime foveolata, dorso leviter 

 tuberculata, 7* mm. longa et fere totidem lata. 



Habitat ad Serra da Jacobina in prov. Bahia: Blanchet n. 2608 ; 

 in prov. Minas Geraes: Gardner n. 4623. 



4. MARCETIA DECUSSATA DC. suffruticosa; caule 

 erecto, teretiusculo, leviter irregulariterque ramoso, leviter 

 piloso demum glabro et inferne saepius excoriato; ramis ob- 

 tuse tetragonis, breviuscule denseque glanduloso-hirtellis ; foliis 

 parvis, subplanis leviter undulatis, submembranaceis rigidibus- 

 que, sessilibus et basi ramulum semiamplexantibus, late ova- 

 tis, basi cordatis, apice acutiusculis, margine integerrimis et 

 non revolutis, trinerviis, supra brevissime sparseque pilosis 

 et minutissime creberrimeque impresso-punctatis, subtus bre- 



vissime denseque glanduloso-hirtellis ; floribus axillaribus, soli- 

 tariis, brevissime pedicellatis; calyce brevissime denseque 

 glanduloso-piloso , tubo anguste campanulato, segmentis tri- 

 angulari-linearibus, apice acutis apiculatisque, basi remotius- 

 culis, tubo paulo brevioribus ; petalis oblongo-lanceolatis, asym- 

 metricis, apice acutis, margine non ciliatis; staminibus satis 

 inaequalibus, exsertis. 



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

 Ann. Sc. nat. ser. 3. XV 47 et Melast. 262. 



Bhexia deeussata Mart, et Schranh! Msc. ex DC. I. c. 



Caulis gracilis, spadiceus, inferne simplex et denudatus, superne 

 paulo ramosus, 3—4 dm. altus; rami erecto-patuli, graciles, breves, cine- 

 reo-fusci, simplices vel vix ramulosi. Folia patula, internodiis paulo lon- 

 giora, supra viridi-cinerea , subtus canescenti-cinerea , 6 mm. longa, 4 ad 

 5 mm. lata; nervis gracillimis, supra tenuiter impressis, subtus leviter 

 prominentibus, mediano satis crassiore. Pedicelli subfiliformes, rigidi, 

 densiuscule breviterque glanduloso-hirtelli, 2 — 3 mm. longi. Calyx ruber, 

 tubo obscure 4-costato, basi rotundato, apice saepius leviter constricto, 

 4 mm. longo, 2 1 jt mm. lato, segmentis erectis, rigidiusculis, 2 l /-2 — 3 mm. 

 longis, basi 1 mm. latis. Petala patula, pallide purpurea, utrinque glabra, 

 obscure plurinervia, 6 — 7 mm. longa, 3 mm. lata. Staminum filamenta 

 capillaria, purpurascentia, subrecta, 6 vel 772 mm. longa; antherae pur- 

 purascentes, subrectae, apice flavae et longe attenuatae, 3 vel 372 mm. 

 longae, basi 2 /s mm. crassae. Ovarium subglobosum , 2 mm. crassum; 

 stylus subcapillaris, purpurascens, leviter sigmoideo-flexuosus, superne le- 

 viter incrassatus, 12 mm. longus. Capsula subglobosa, pallide fusca, le- 

 viter 4-sulcata, usque ad medium 4-partita, 3 — 4 mm. crassa. Semina 

 fusca, valde cochleata, satis compressa, apice rotundata, basi obtusiuscula, 

 creberrime minuteque foveolata, dorso non tuberculata, 2 /3 mm. longa, 

 72 mm. lata. 



Habitat in alpestribus umbrosis montium prope Bio das Contas et 

 ad flumen Brumado prov. Bahia, altit. 700 m. : Martius. — Floret 

 Octobri. 



5. MARCETIA EXCORIATA DC. suffruticosa; caule 

 erecto, teretiusculo, trichotome ramosissimo, brevissime et 

 densiuscule glanduloso-piloso demum glabro et inferne longe 

 excoriato ; ramis acutiuscule tetragonis, densiuscule breviterque 

 glanduloso-hirtellis; foliis parvis, subplanis, submembranaceis 

 rigidibusque, brevissime petiolatis, oblongis vel rarius ovato- 

 oblongis, basi rotundatis vel subcordatis, apice obtusis et mi- 

 nute mucronulatis , margine integerrimis et non vel vix re- 

 volutis, trinerviis, utrinque brevissime et densiuscule glandu- 

 loso-hirtellis; floribus axillaribus, brevissime pedicellatis, in 

 racemum brevem foliosum subdigestis ; calyce densiuscule bre- 

 viterque glanduloso-piloso, tubo anguste campanulato, seg- 

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

 paulo brevioribus; petalis obovatis vel obovato- oblongis, valde 

 asymmetricis, apice subacutis, margine non ciliatis; stamini- 

 bus paulo inaequalibus, longiuscule exsertis. 



Marcetia excoriata DC! Prodr. III. 124; Mart. Nov. 

 Gen. et Sp. Ill 102. t. 248; Dot. Begist. XXIX. t. 31; 

 Naud. in Ann. Sc. nat. ser. 3. XV. 47 et Melast. 262; Tri- 

 ana, Melast. 50. 



Bhexia excoriata Mart, et Schr.! Msc. ex DC. I. c. 



Caulis satis gracilis, rigidiusculus, cinereo-fuscus interdum purpu- 

 rascens, fere usque ad basin ramosissimus, 4—8 dm. altus; rami subfili- 

 formes, erecti vel erecto-patuli, breviusculi, sordide cinerei, simplices vel 

 leviter ramulosi. Petiolus subfiliformis , teretiusculus , breviter denseque 



