403 



MELASTOMACEAE : TIBOUCHINA. 



404 



Caulis erectus vel adscendens, satis gracilis, teretiusculus, fuscescens, 

 inferne saepius simplex denudatus glaber et laeviusculus, superne saepius 

 ramosissimus et densiuscule longeque pilosus, 4 — 10 dm. altus; rami gra- 

 ciles, breviusculi, ereeto-patuli, cinerei vel fuscescentes. Petiot.us gracilis, 

 teretiusculus, longiuscule denseque pilosus, '/j — l 1 /* cm - longus. Folia 

 patala vel erecto-patula , internodiis saepius breviora, supra laete vel in- 

 tense viridia, subtus viridi-ciuerea, o — 10 cm. longa, 1 — 2V2 cm. lata, su- 

 periors saepius multo minora; nervis gracilibus, supra vix impressis, sub- 

 tus paulo prominentibus, mediano leviter crassiore, exterioribus caeteris 

 gracilioribus et paulo brevioribus. Bracteolae subulatae, acutissimae, 

 1 — 3 mm. longae. Calyx cinereus vel fuscescens, tubo basi rotundato, 

 apice leviter constricto, 3 mm. longo, 2— 2 x /a mm. lato, segmentis erecto- 

 patulis, satis flexuosis, 3 — 4 mm. longis, hasi 2 /s mm. latis. Petala pa- 

 tula, alba vel rosea, utrinque glabra, tenuiter 3 — 5-nervia, 5 — 6 mm. longa, 

 3 — 4 mm. lata. Staminum filamenta capillaria, purpurascentia, subrecta, 

 3 — 4 mm. longa; antherae flavescentes, rectae, apice breviter attenuatae, 

 2V2 — 3 mm. longae, V« — 2 /s mm. latae, connectivo infra loeulos vix Vs mm. 

 long, producto. Ovarium ovoideum, inferne glabrum, apice brevissime et 

 densiuscule setulosum; stylus purpureus, filiformis, leviter flexuosus, 5 ad 

 6 mm. longus. Capsula fuscescens, subglobosa, tenuiter 5-sulcata, 3 mm. 

 crassa. Semixa fulva, leviter cochleata, apice rotundata, basi acutiuscula, 

 creberrime minuteque tuberculata, V* nim. longa, Vs mm. lata. 



Habitat ad ripas flum. Amazonas : Bonpland, Poeppig n. 82, 1002; 

 in prov. do Alto Amazonas ad Humayta et Rio Madeira : Traill n. 244, 

 245, 246. Etiam in Bolivia: d'Orbigny, Pentland ; in prov. Larecaja 

 et Caupoliean: Weddell n. 4584; in Peru via: Pavon ; ad Cuchero: Dom- 

 bey; ad Casapi: Mathews n. 1721, Fielding n. 1721; ad Mozobamba: 

 Mathews n. 1270; ad Chachapayas : Mathetvs n. 3219; prope Tarapoto 

 ad rivulos : Spruce; in fruticetis et ad vias circum Pampayaco : Poeppig 

 n. 1002; in ripis graminosis ad Rio Tocache prov. Maynas: Poeppig 

 n. 1862; in Ecuador: Secmann n. 768; ad mont. Chimborazo: Spruce; 

 prope Quito: Jameson n. 740; in Venezuela: Linden n. 18, Birschel, 

 Otto n. 481, Funck n. 568, Fendler n. 129. 405, 406_, Moritz n. 154, 

 De Grosourdy ; in Nova Granata: Bonpland, Barclay, Goudot, Hartweg 

 n. 1005, Purdie, Duchassaing, Linden n. 1506, Scldim n. 165, Weddell, 

 Seemann n. 73, 1140, Triana; in America centrali: Sinclair, Beurley ; 

 in Nicaragua: Tate n. 118, 212 ; in Honduras: Scherzer ; in Guatemala: 

 Friedrkhsthal ; in Mexico: Linden n. 643, Galeotti n. 2923, 2932, 2947, 

 Jiirgensen n. 420, 884, 885, Heller n. 84, Franco n. 250, Liebmann 

 n. 123, Fritz Mueller n. 1225, Bourgeau n. 1868; in instdis Antillanis : 

 Bonpland; in Cuba: Wright n. 187 ; in S. Vincent: Arnott, Guilding, 

 Caley ; in S. Domingo: Bitter; in ins. Trinitatis : Sieber, Lane. — 

 Floret Octobri — Februario. 



Sect. IX. Pseudopterolepls. — Pterolepis sect. B. Triana, 



Melast. 39. 



Herbae vel suffrutescentes. Flores 4-meri, ecalyculati, 

 pedicellati; pedicelli bracteolis parvis vel inconspicuis donati. 

 Calycis lobi persistentes. Stamina glaberrima; antherae sae- 

 pius elongatae, apice saepius longe attenuato-subulatae, poro 

 parvo dehiscentes. — Species 114 — 121. 



114. TIBOUCHINA CERASTIFOLIA Coon, subher- 

 bacea; caule trichotome ramoso; ramis acutiuscule tetragonis, 

 pilis mollibus patulis breviusculis glauduliferis densiuscule 

 vestitis ; foliis breviter petiolatis, mollibus, anguste ovatis vel 

 ovato-lanceolatis, basi subrotundatis , apice acutis et saepius 

 breviter acuminatis, margine tenuissime serrulatis, 5-nerviis 

 nervis lateralibus basi breviter coalitis, supra densiuscule et 

 breviuscule setulosis, subtus densiuscule breviterque villoso- 

 hirtellis; floribus parvis, breviter pedicellatis , minntissime 

 bracteolatis, in paniculam parvam vel majusculam terminalem 

 vel axillarem multifloram foliosam dispositis; calyce brevius- 

 cule subsparseque glanduloso-piloso, tubo campanulato-oblongo, 



segmentis anguste triangularibus, apice obtusiusculis, margine 

 brevissime ciliatis, tubo multo brevioribus; petalis obovato- 

 oblongis, basi longiuscule attenuatis, apice obtusis vel sub- 

 acutis, margine non vel vix ciliatis; staminibus valde in- 

 aequalibus, filamentis glabris, majorum connectivo infra loeulos 

 longe producto basi satis incrassato et profunde bilobato, mi- 

 norum connectivo brevissime producto basi paulo incrassato 

 et leviter bilobato; stylo longiusculo, glabro, apice non vel 

 vix incrassato. 



Tetrameris cerastifolia Naud.! in Ann. 8c. not. ser. 3. 

 XIV. 122 et Melast. 214. 



Arthrostemma cerastifolmm DC! Herb, ex Nattd. I. c. 



Rhexia cerastifolia Schr. et Mart.! 3Isc. ex DC. Prodr. 

 III. 137. 



Pterolepis cerastifolia Triana! Melast. 40 (excl. syn.). 



Radix horizontalis, ramosa, crassiuscula. Caulis erectus, satis gra- 

 cilis, inferne saepius simplex, superne satis trichotome ramosus, obtuse 

 tetragonus, densiuscule longeque villoso-hirsutus, cinereus vel ferrugineus, 

 4—8 dm. altus; rami erecti vel ereeto-patuli, graciles, longinsculi, einereo- 

 fusci. Petiolus satis gracilis, teretiusculus, densiuscule longeque villoso- 

 hirsutus, 4 — 10 mm. longus. Folia patula, internodiis saepius multo 

 breviora, saepius ovato-lanceolata , supra intense viridia, subtus viridi- 

 cinerea, 3 — 5 cm. longa, 1 — 2 cm. lata, superiora satis minora; nervis 

 gracilibus, supra leviter impressis, subtus satis prominentibus, mediano 

 paulo crassiore, exterioribus caeteris satis gracilioribus et paulo brevioribus. 

 Paxicula diffusa, 1 — 2 dm. longa. Bracteolae patulae, ovatae, glandu- 

 loso-villosae, 1—2 mm. longae. Calyx atro-fuscus, tubo basi acutiusculo, 

 apice non vel paulo constricto, 4 mm. longo, 2 — 2 l /» mm. lato, segmentis 

 erectis, rigidiusculis, l 1 /* — 2 mm. longis, basi 1 — i*/i mm. latis. Petala 

 purpurea, patula, utrinque glabra, obscure plurinervia, 5 — 8 mm. longa. 

 Staminum filamenta capillaria, subrecta, 4 vel 6 mm. longa; antherae 

 purpurascentes, leviter arcuatae, apice longe attenuatae et paulo pallidio- 

 res, 4 vel 5 mm. longae. 8 /s mm. crassae, connectivo infra loeulos 2 /3 vel 

 3 mm. long, producto capillari, satis arcuato. Ovarium ovoideum, inferne 

 glabrum, apice densiuscule breviterque setulosum; stylus subcapillaris, 

 purpureus, leviter sigmoideo-flexuosus, 10 — 11 mm. longus. Capsula ovo- 

 idea, leviter 4-sulcata, 4 mm. longa, 3 mm. crassa. Semixa cinerea, dis- 

 tincte cochleata, apice rotundata, basi obtusa, creberrime minuteque tu- 

 berculata, Vs mm. longa, V* mm. lata. 



Var. [3. major Cogn. 



Caulis robustus, ramosissimus, atro-fuscus. Petiolus robustiusculus, 

 1 — IV2 cm. longus. Folia anguste ovata, basi rotundata, 6—8 cm. longa, 

 3 — 4 cm. lata, ramealia multo minora. Flores majores; petala 10 ad 

 12 mm. longa. 



Habitat in prov. Minas Geraes : Gaudicliaud n. 143; in campis 

 altis montis Grdo Mogor : Martius ; ad Caxoeira do Campo: Lund; ad 

 or as paludum circa S. Jodo del Rey : St-Hilaire D. n. 566; ad Serra 

 de Mantiqueira: Warming; in locis hieme inundatis ad Serra d'Estrella 

 prov. Rio de Janeiro: Riedel n. 1252, 1649; in prov. S. Paulo: Bowie 

 et Cunningham n. 202; ad Piritura : Prater; in prov. Rio Grande do 

 Sul: St-Hilaire C 2 n. 2751; in Brasilia australi, locis haud indicatis: 

 Sello n. 2583, C. n. 1678, Langsdorff n. 2024. — Var. p. in locis apricis 

 prope Santos prov. S. Paulo altit. 1000 m. : Mosen n. 3267. — Floret 

 Februario — Martio . 



115. TIBOUCHINA NITIDA Cogn. suffruticosa; caule 

 parum ramoso; ramis obtuse tetragonis, setis elongatis rigi- 

 diusculis erecto-patulis glanduliferis basi incrassatis sparse 

 hirsutis praecipue ad nodos ; foliis breviter petiolatis, rigidius- 

 culis, lanceolatis, basi breviter attenuatis vel subrotundatis, 

 apice acutis et saepius breviter acuminatis, margine minute 

 serrulatis, 5-nerviis nervis lateralibus basi brevissime coalitis, 



