275 



MELASTOMACEAE : PTEKOLEPIS. 



276 



Pterolepis Eostmanni Stead.! in Flora XXVII. 720; 

 Walp. Repert. V 70S. 



Tetrameris hrachyandra Nand. in Ann. Sc. nat. ser. 3. 

 XIV. 127 et Melast. 210 (pro parte). 



Radix fibrosa, longiuseula, ramosissima. Caulis satis gracilis, 

 leviter flexuosus, pallide viridis vel saepius purpnrasccns , saepius iere 

 usque ad basim ramosus foliosnsqne , 3—7 dm. altus; rami saepius 

 uumerosi, simplices vel apice leviter ramulosi, graciles, saepius elongati, 

 patuli vel erecto-patuli, rigidiuscnli, cinerei vel purpurascentes, acutiuscnle 

 tetragoni, subsparse adpresso-setulosi praeeipue ad uodos. Petiolus gracilis, 

 densiusculc adpresso-setulosus, 1—4 mm. longus. Folia patula, plana, 

 internodiis saepius multo breviora, rigidinscula, supra intense viridia, subtus 

 cinerea vel pallide viridia, saepius ovato-oblonga , apice obtusiuscnla, basi 

 paulo attenuata, 2—3 cm. longa, 1 — 1 V* cm. lata, ramealia saepius pa nlo 

 breviora; nervis gracilibus, supra vix impressis, subtus paulo prominentibus, 

 mediano paulo crassiore. Flouks saepius dense glomerati. Calycis tubus 

 pallide viridis vel saepius demum fuscescens, pilis pallidioribus longe hir- 

 sutus, distincte 8-costatus, basi rotundatus, apice saepius leviter constrictus, 

 3—4 mm. longus, 3 mm. latus; segmenta erecta, rigida, sordide cinerea 

 vel purpurascentia, demum saepius distiucte 3— 5-costulata, 5—6 mm. 

 longa, basi 2 l [i— 3 mm. lata, cum aristis rigidiusculis erectis vel erecto- 

 patulis sparse pilosis 3—4 mm. longis apice longissime plurisetosis alter- 

 nantia. Pktala erecto- patula, violacea purpurea vel rosea rarius alba, 

 ntrinque glaberrima, basi vix attenuata, tenuiter multinervia, 9 — 11 mm. 

 longa, saepius paulo latiora. Staminum filamenta subcapillaria, purpurea, 

 leviter flexuosa, C — 7 mm. longa; antherae anrantiaceae , apice paulo 

 pallidiores, saepius satis arcuatae, 4 vel 5 mm. longae, 2 /3 mm. crassae, 

 eonnectivo infra loculos 2 /s vel 1 mm. longos producto, purpurascente. 

 Ovarium ovoideum, inferne glabrum, vertice pilis satis numerosis albidis 

 rigidiusculis 2 nun. longis birtellum; stylus riliformis, purpnrascens, inferne 

 subrectus, apice satis arcuatus et leviter incrassatus, 12 mm. longus. 

 Capnula atrofusca, subglobosa, longitudinaliter obscure 4-sulcata, 4 mm. 

 crassa. Skmina pallide lulva, distincte cocbleata, irregulariter ovoidea, 

 apice rotundata, basi obtusiuscnla, satis compressa, creberrime tuberculata, 

 V« mm. longa, vix Vs mm. lata. 



Var. p. longifolia Cogn. 



Canlis satis ramosus; rami erecto- patuli , saepius ramulosi. Folia 

 distinct^ peiiolata, tanceolata v«»i oblongo-lanceolata, apice acuta, inferne 

 longinsenle attennata, I "> en. longa, 7 — 12 mm. lata. Flores dense 

 glomerati, roaei vel pnrpnrei. 



Var. f. ANGUSTiPOLii Cogn. 



Canlia satis ramosns, ereotns vel adscendens; rami erecto -patnli, 

 elongati, Baepins simplices. Folia snbsessiHa, lanceolata vel lineari-lanceolata, 

 apice acuminata, interne longe attennata, ntrinque densiuscnle breviterqne 

 adpresso-pilosa praecipne subtus, 3 -6 cm. longa, 4—8 mm. lata. Flores 

 densiuscnle glomerati. Calyx longissime hirsutus, segmentis purpnras- 

 ct-ntilius 



Var. 5. Marti an a Cogn. 



Ohaetogastra shcrardioidw Mart. ! Herb. Fl. Bras. n. 501 

 (non DC). 



Caulis satis ramosus, gracilis, adscendens; rami saepius oppositi, 

 erect! vel erecto-patnli, elongati, saepius leviter ramulosi. Folia breviter 

 petiolata, ovata vel oblonga, apice acutiuscula, basi subrotundata vel 

 paulo attenuata, margine interdum minutissime obscnreqne denticulata, 

 lVt— 2*/i cm. longa, 8—13 mm. lata. Capitnli saepius pauciflori. Flores 

 paulo minores, pallide rubri. Calyx longissime denseqne rufo- hirsutus, 

 segmentis fuscescentibus. 



Var. s. micropiiylla Cogn. 



Caulis satis gracilis, erectus, inferne simplex, snperne satis ramosus; 

 rami oppositi, erecto-patuli, brevinscnli, saepius simplices. Folia snb- 

 sessilia, oblonga, apice saepius obtusiuscnla, basi breviter attenuata, mar- 

 giue integerrima, 8—13 mm. longa, 3—5 mm. lata. Flores in capitulnm 

 paucifloram terminalem dispositi vel interdum axillares solitarii, rosei. 

 Calyx longinsenle sparscque hirsutus, segmentis pnrpurascentibus. 



Var. C. siierardioides Cogn. 

 Chaetogastra siierardioides DC! I. c. 



Caulis gracillimus, adscendens, sparsissime strigosus demum sub- 

 laevis, inferne simplex, superne satis ramosus; rami saepius alterni, diffusi, 

 elongati, gracillimi, saepius satis ramulosi. Folia brevissime petiolata, 

 lanceolata, apice acuta, basi lougiuscule attenuata, margine integerrima, 

 li/ 2 _2V2 cm. longa, 3—0 mm. lata. Flores paulo minores, ad apices 

 ramorum subterni vel axillares et solitarii. Calycis tubus breviuscule 

 sparseque hirsutus; segmenta fuscescentia. 



Var. 7j. Glaziovii Cogn. 



Caulis satis gracilis, erectus, inferne simplex, superne paulo ramosus ; 

 rami saepius oppositi, erecti vel erecto-patuli, plerumqne breves, simplices, 

 Folia brevissime petiolata, oblonga vel oblongo-lanceolata, apice obtusius- 

 cnla, basi leviter attenuata, margine integerrima, 15 — 18 mm. longa, 

 6 — 8 mm. lata. Flores axillares et solitarii vel rarius ad apices ramorum 

 subterni. Calycis tubus longinsenle sparseque hirsutus ; segmenta fuscescentia. 



Var. \r. Saldaniiaei Cogn. 



Caulis satis gracilis, erectus, simplex, purpurasceus, inferne brevius- 

 cule denudatus, 2 — 3 dm. altus. Folia breviter petiolata, oblonga vel 

 ovato-oblonga, apice obtnsa, basi subrotundata, margine interdum obscure 

 denticulata, l'/a — 2 cm. longa, 6 — 9 mm. lata. Flores brevissime pedicellati. 

 axillares, solitarii. Calycis tubus longinsenle sparseque hirsutus; segmenta 

 purpurea. 



Var. t. Peruviana Cogn. 



Caulis satis gracilis, erectus, saepius leviter ramosus, densiuscule 

 strigosus; rami oppositi, erectinscnli, breves, simplices. Folia subsessilia, 

 anguste lanceolata, apice breviter acuminata, basi breviter attenuata, mar- 

 gine integerrima, 2 — 3V2 cm. longa, 5 — 8 mm. lata, supra sparse adpresso- 

 strigosa, subtus densiuscnle longeque adpresso-pilosa. Flores sessiles, 

 terminales, subcapitati. Calycis tubus longissime et densiuscule hirsutus; 

 segmenta fuscescentia. 



Var. x. Angusturensis Cogn. 



Uhexia Angusturensis Bonpl.! I. c. 

 Arthrostemma Angasturense DC! I. c. 



Caulis erectus, parum ramosns, 4 — 10 dm. altus. Folia breviter 

 petiolata, lanceolata, apice acutiuscula, basi subrotundata, margine integer- 

 rima, supra subsparse adpresso-strigosa, subtus subsparse breviterqne ad- 

 presso-pilosa. Flores terminales, solitarii, albi, paulo minores. Calycis 

 tubus lougiuscule et densiuscule rufo-hirsntus; segmenta fuscescentia. 



Var. X. BRACHYANDRA Cogn. 



Arthrostemma hrachyandrum Cham.! I. c. (pro parte). 

 Tetrameris hrachyandra Naud. I. c. (pro parte). 



Caulis adscendens, satis gracilis, inferne simplex, superne parum 

 ramosus, 2 dm. altus; rami breves, erecti, graciles. ' Folia subsessilia, ob- 

 longa vel oblongo-lanceolata, apice acutiuscula, basi subrotundata, mar- 

 gine levissime undulato-subdenticulata, 1 — V/t cm. longa, 4—7 mm. lata. 

 Flores parvi, breviter pedicellati, axillares vel terminales, solitarii vel sub- 

 capitati. Calycis tubus 3 mm. longus, breviuscule subsparseque hirsutus; 

 segmenta fuscescentia, 4 mm. longa. 



Habitat forma typica in prov. Bio de Janeiro : Mikan, St-HUaire 

 B 1 n. 197 bis, Glaziou n. 2134, 8506; ad S. Jodo da Barra: St-HUaire 

 B* n. 162; in prov. Minas Geraes: St-HUaire B l n. 960, C 1 n. 520, 

 Claussen sine n. et n. 593, Gardner n. 4604, Burchell n. 4721 ; ad Pira- 

 pora: Netto; in prov. Goyaz : Gardner n. 4144; in prov. Bahia: Blanchet 

 n. 209, Lhotzky; ad llheos: Waicra et Maly n. 265 ; in prov. Pernam- 

 bnco : Gardner n. 1005 ; in Brasilia loco hand indicato : Burmann. Etiam 

 in Guiana gallica : Bobert; adBoura: Sagot; adKarouany: Sagotn.210; 

 in Surinamia: Hostmann n. 876, 1131, 1231, Berthoud - Coulon n. 274; 

 in campis humidis et in pascuis prope Paramaribo : Splitgerber, Wull- 

 schlagel n. 172; in arenosis distr. Para: Hostmann et Kappler n. 1135; 

 in Guiana anglica: Schomburgk n. 164, 165, 186 part, 248; in Venezuela: 



