100 ANALES DE LA SOCIEDAD CIENTÍI1CA ARGENTINA 



Hab. In pratis «Campo chico» vocatis ad ripám sinistram fluminis 

 uYacan-guazú» in provincia argentina <■<. Missiones ^) Maj. 1883, 

 leg. el. C. V. Gülich. 



Obs. Caudex irregularis, noduloso-incrassatus (1" long. zr 0,5-0,6'" 

 crass.), lignosus, exlus scruposo-verruculosus, fusco-castaneo- 

 corticatus, parce radiculosus; radicibus filiformibus, crassiuscu- 

 lis, longiusculis, subsimplicibus.Rami subfasciculatim 2-5-exsur- 

 gentes, erecto-virgatuli (20-25" alt. = 0,5-0,6'" crass.), simpii- 

 ciusculiv. stricte pauci-ramulosi, recti, duri, rigidali, lignosi, 

 ligno albo, axe medullari gracili albo-farclo donali, corticetenui 

 castaneo v. íusco-rubescente squarrulose v. longiludinaliler fi- 

 brose secedente tecli, inferné usque ad médium nudi, hinc inde 

 regulariter ac minute punctulato-cicalricosi, sursum densiuscule 

 íoliolosi, internodiis foliis non v. brevioribus (4-5'" long.), tere- 

 tes, glabri V. in partibus superis v. praeserlim junioribus ad 

 monofariam late minuteque subrelrorsum birto-velutini. Folia 

 fusco-viridia, decussato-opposita, ramulis arete erecto-adpressa,. 

 plañe sessilia, coriácea, opaca, ovato-cordata v. cordato-ellip- 

 tica (4-6'" long. zr 2-3'" lat.), basi modice et aperte sinuala, auri- 

 culis latiuscule rotundatis, laxe revolutis, ápice obtusiuscule 

 acutata, integerrima, supra glabra vix v. non ad marginem sub- 

 incrassatulum (praecipue ad hypophyllum) minutissime (len- 

 tis validae ope lanlum) scabra visa, subtus glabra vix pilis 9-12 

 (3 in costa, totidemque utrinque) crassiusculis, erectis, subglan- 

 dulosis, teretibus, simplicibus ornata, costa primaria centrali 

 tantum perspicua ad epiphyllum vix impressa, ad hypopbyllum 

 parce prominula. 



Flores solilarii, extraaxillares ad nodos 6-12 supremos ramo- 

 rura ramulorumque. Pedicelli solitarii inter insertionem cujus- 

 que foliorum, paris altereatim exsurgentes, recti, folia non v. 

 parce superantes (5-7'" long.), gracillimi, dense minuteque pa- 

 lentim v. subretrorsum hirto-puberuli, sub-visciduli. Calycis 

 lubus elongatus (6'" long.), postice subinflatulus (1,5'" diam.) 

 ac basi longiuscule saccato-calcaratus (2'" long.), antice ad ter- 

 tium superum leniter coarctatus (1'" diam.) dein ados oblique 

 truncatus subampliatulus (1,2'" diam.) 12-dentatus, dentibus 

 6 majoribus, brevibus, triangularibus cum 6 vix conspicuis al- 

 ternantibus, longitudinaliter 12-costato-sulcatus, viridis v. sub- 

 rubescens, extus ad costas laxe subglanduloso-hirsutus, intus, 

 ore ac basi exceplis, molliter densiusculeque albo-pilosus. Pe- 



