383 



MELASTOMACEAE : TIBOUCHINA. 



384 



rimisque, subtus ad nervos squamis breviusculis lanceolatis 

 arete adpressis leviter eiliatis basi inferne acute productis 

 subsparse armatis; paniculis terminalibus, majusculis, multi- 

 floris, inferne saepius foliatis; floribus parvis, subsessilibus, 

 ad apices ramulorum paniculae subglomeratis, bracteolis par- 

 vis basi fulcratis; calyce setis longiusculis linearibus arete 

 adpressis margine saepius non eiliatis basi inferne acute pro- 

 ductis densiuscule obtecto, tubo oblongo, segmentis anguste 

 triangularibus, acutissimis, margine brevissime eiliatis, tubo 

 multo brevioribus, cum setis totidem crassis rigidis brevius- 

 culis alternantibus ; petalis obovatis, basi breviter attenuatis, 

 apice subtruncatis , margine brevissime eiliatis; staminibus 

 paulo inaequalibus, filamentis circa medium longe flexuoso- 

 pilosis caeteris glabris, connectivo infra loculos longiuscule 

 producto, ad insertionem fllamenti antice longe denseque bar- 

 bato; stylo longiusculo, glabro, superne vix incrassato. 



Tabula nostra LXXXVIII. Fig. II (habitus cum analyst). 



Caulis erectus, satis gracilis, teretiuscvilus, satis ramosus, 1 — lV2m. 

 altns; rami erecto-patuli, elongati, graciles, subsimplices, sordide cinerei. 

 Petiolus satis gracilis, supra leviter canaliculars , squamis breviusculis 

 adpressis non eiliatis basi inferne productis densiuscule vestitus, 5 — 8 mm. 

 longus. Folia erecto-patula, internodiis saepius subduplo longiora, utrin- 

 que pallide viridia praecipue subtus, 10 — 12 cm. longa, 3 — 4 cm. lata, 

 superiora satis minora; nervis crassis, supra leviter impressis, subtus valde 

 prominentibus, mediano paulo crassiore, exterioribus caeteris multo graci- 

 lioribus interdum vix conspicuis. Bractkae anguste ovatae, apice acutae, 

 extus cinereae et adpresso-squamulosae, intus fuscae glabraeque, margine 

 brevissime ciliatae, 1 — 3 mm. longae. Calyx cinereus, tubo basi paulo 

 attenuato, apice leviter constricto, 5 — 6 mm. longo, 2 — 2Va mm. lato, 

 segmentis erectis, rigidis, intus fnscis glabrisque, 2*/2 — 3 mm. longis, basi 

 l 1 /* mm. latis. Petala violacea, utrinque glabra, tenuiter pluriuervia, 

 6 — 7 mm. longa Staminum filamenta capillaria, purpurea, leviter flexuosa, 

 T vel 8 — 9 mm. longa; antberae purpureae, satis arcuatae, apice longius- 

 cule attenuatae et paulo pallidiores, 6 — 7 mm. longae, 2 /s mm. crassae, 

 connectivo infra loculos 2 vel 3 mm. long, producto, capillari, satis ar- 

 cuato, basi non incrassato et profunde bilobato. Ovarium ovoideo-oblon- 

 gum, inferne gl ibruin, superne longiuscule et densiuscule setulosum; stylus 

 subcapillaris, purpureus, leviter sigmoideo-flexuosus, IV2 cm. longus. Cap- 

 sula anguste ovoidea, fusca, leviter 5-sulcata, 6 mm. longa, 4 mm. crassa. 

 Semina perfecta ignota. 



Habitat in locis subhumidis prope Cujaba prov. Mato Grosso: Riedcl 

 n. 850 in herb. Hort. et Acad. Petrop. — Floret Februario. 



93. TIBOUCHINA AEGOPOGON Cogn. subherbacea 

 basi lignosa; caule simplici, tereti, squamis linearibus bre- 

 viusculis arete adpressis non eiliatis basi inferne longiuscule 

 acuteque productis subsparse vestito ; foliis paucis, brevissime 

 petiolatis, rigidis, ovato-oblongis vel rarius oblongo-lanceolatis, 

 basi rotundatis, apice acutis vel interdum inferioribus rotun- 

 datis, margine integerrimis et adpresse setoso-ciliatis, 5-ner- 

 viis nervis lateralibus basi breviter coalitis, utrinque. sub- 

 sparse breviterque setulosis scaberrimisque, subtus ad nervos 

 setis longiusculis linearibus crassis rigidis adpressis non ei- 

 liatis basi inferne acute productis densiuscule armatis; flori- 

 bus majusculis, ad apices ramulorum paniculae plus minusve 

 corymbosae congestis bracteolisque brevibus basi munitis; 

 calyce setis longiusculis linearibus adpressis margine saepius 

 non eiliatis basi inferne acute productis dense obtecto, tubo 

 campanulatooblongo, segmentis triangulari-lanceolatis, acutis- 

 simis, margine breviuscule eiliatis, tubo multo brevioribus, 



cum setis totidem crassis rigidis longiusculis alternantibus ; 

 petalis obovatis, basi satis attenuatis, apice oblique subtrun- 

 catis vel leviter retusis, margine breviter eiliatis ; staminibus 

 satis inaequalibus, filamentis medium versus pilis aliquot fle- 

 xuosis ornatis, caeteris glabris, connectivo infra loculos bre- 

 viuscule producto, ad insertionem fllamenti superne longius- 

 cule barbato ; stylo longiusculo, glabro, superne non incrassato. 



Lasiandra aegopogon Naud.! in Ann. Sc. nat. ser. 3. 

 XIII. 153 et Melast. 132. 



Pleroma aegopogon Trianaf Melast. 45. 



Caules plures, erecti, cinereo-fusci, V*-— 1 in. alti, basi densiuscule 

 foliosi, superne subnudi. Petiolus crassus, supra canaliculatus , den- 

 siuscule squamulosus, 2—5 mm. longus. Folia patula vel erecto-patula, 

 plerumque ovato-oblonga, supra laete viridia, subtus viridi-einerea, 10 ad 

 15 cm. longa, 4 — 7 cm. lata, superiora multo minora; nervis crassis, supra 

 satis impressis, subtus valde prominentibus, mediano satis crassiore, exte- 

 rioribus caeteris multo gracilioribus et paulo brevioribus. Bracteolae 

 anguste ovatae, apice acutae, extus cinereae et adpresso-squamulosae, intus 

 fuscae glabraeque, 3 — 6 mm. longae. Calyx cinereus, tubo basi paulo 

 attenuato, apice non vel vix constricto, 9—10 mm. longo, 4 — 5 mm. lato, 

 segmentis erectis, rigidis, intus fuscis glabrisque, 3 — 4 mm. longis, basi 

 2*/2 — 3 mm. latis. Petala violacea, patula, utrinque glabra, tenuiter 

 multinervia, 16—20 mm. longa. Staminum filamenta filiformia, atro-pur- 

 purea, subrecta, 9 — II mm. longa; antberae purpureae, subrectae, apice 

 longe attenuatae et paulo pallidiores, 10 vel 12 mm. longae, 1 mm. crassae, 

 loculis vix undulatis, connectivo infra loculos 2 vel 3 mm. long, producto, 

 filiformi, subrecto, basi leviter incrassato et obscure bilobato. Ovarium 

 anguste ovoideum, inferne glabrum, superne breviuscule denseque setulo- 

 sum; stylus filiformis, atro-purpureus, leviter sigmoideo-flexuosus, 18 ad 

 20 mm. longus. Capsula perfecta ignota 



Var. [3. angustifolia Cogn. 



Folia paucissima, internodiis multo breviora, lanceolata vel oblongo- 

 lanceolata, 10 — 12 cm. longa, IV2 — 2 x /2 cm. lata. 



Habitat in prov. Minus Geraes : Weddell n. 1911; in campis siccis 

 montosis glareosis aridis ad Serra de Christaes prov . Goyaz: Pohl n. 1067 ; 

 in eadem prov. loco hand indicato: Gardner n. 3164. — Var. ji. in pas- 

 cuis siccis aridis glareosis montosis ad Serra de Ipicons prov. Minas Ge- 

 raes: Pohl n. 634, 1191. 



94. TIBOUCHINA BARBIGERA Baill. fruticosa; 

 caule ramosissimo ; ramis teretibus, squamis linearibus longius- 

 culis arete adpressis leviter eiliatis basi inferne acute pro- 

 ductis densiuscule vestitis; foliis rigidiusculis, breviter petio- 

 latis, late ellipticis vel ovato-oblongis, basi rotundatis, apice 

 acutis obtusis vel subrotundatis, margine integerrimis, 5-ner- 

 viis nervis lateralibus basi brevissime coalitis, supra setulis 

 brevissimis adpressis apice eiliatis densiuscule vestitis scabris- 

 que, subtus subsparse breviterque setulosis et ad nervos squa- 

 mis linearibus longiusculis arete adpressis leviter eiliatis basi 

 inferne longiuscule acuteque productis densiuscule armatis; 

 floribus parvis, ad apices ramulorum paniculatim dispositorum 

 dense glomeratis, bracteolis parvis fulcratis ; calyce squamulis 

 breviusculis lanceolatis adpressis margine breviter eiliatis 

 dense obtecto, tubo oblongo, segmentis triangularibus, acutis- 

 simis, margine vix eiliatis, tubo multo brevioribus; petalis 

 obovatis, basi paulo attenuatis, apice subtruncatis mucronu- 

 latisque, margine breviuscule glanduloso -eiliatis ; staminibus 

 paulo inaequalibus, filamentis medium versus densiuscule lon- 

 geque flexuoso-pilosis caeteris glabris, connectivo infra loculos 



