724 BULLETIN DE L’HERBIER BOISSIER (2me SÉR.). (152) 
Var. glabrata nob. 
Foliis subglabratis ejusdem formæ ac. var. semiserrata. 
Suffrutex 1-2 petala lutea, in campo Apepu (Tapiraguay), Dec., n. 5962. 
Var. 2ncana nob. 
Foliis superne mollibus, inferne dense cano tomentosis nec sericeis. 
Suffrutex 2-3 petala aurantiaca inter rupes Cerro Santo Tomas, Sept., 
n. 1021. 
Viguiera guaranitica Chod. spec. nov. 
Basi suffruticosa, caulibus herbaceis erectis leviter angulosis; folia opposita 
sessilia vel basi brevissime contracta oblonga vel oblongo-lanceolata 75/20 70/20 
90/19 43/11 mm. vel minora, setis inconspicuis vix scabriuscula glabrata ; 
internodia 35-50 mm., pedunculus terminalis 25-40 cm. longus, sat robustus 
(2 mm.); capilulum terminale 50-60 mm. latum; involucrum cc. triseriale, 
bracteis exterioribus brevioribus lanceolato-linearibus crassiusculis minus 
adpressis, interioribus etiam basi longitudinaliter et crassiuscule basi et medio 
bistrialis vel striatis, apice herbaceis dorso puberulis; ligulæ ad 7 mm. longæ vel 
angustiores; achænia immatura oblonga leviter pilosa basi vix attenuata, exaris- 
tata, squamellæ pappi dilatato ellipticæ parte superiore crenatæ tenues tubo 
triplo breviores. 
Affinis V. éuberosæ cui similis differt pappo, textura foliorum, foliis haud 
glaucis, foliis oppositis amplioribus capitulis majoribus. 
Suffrutex 0,5-0,6, petala aurantiaca, in campo pr. Valenzuela, Jan., n. 6970; 
suffrutex 1-1,5, petala lutea, ad marginem silvæ in regione cursus superioris 
fluminis Apa, n. 7667; id., Jan., n. 8349. 
Viguiera Hassleriana Chod. spec. nov. 
Caules basi lignosi, erecti, simplices vel vix ramosi, striati, pilis patulis mol- 
libus hirsuti; folia sessilia opposita herbacea ovato-elliptica obtusa breviter 
acuta, supra basin distincte trinervia, junioribus ramisque dense molliter hirsutis 
pilis 3-4 mm. longis; limbus 50/20 40/20 32/18 30/10 mm.; pedunculus nudus 
20-30 cm. longus versus capitulum magis molliter hirsutus, flexuosus; capitulum 
50-60 mm. latum; involucri phylla lanceolato-acuta dorso molliter hirsuta 
10/4 mm. vel longiora; ligulæ texturæ tenui; achænium dense hirsutum; coro- 
nula pappi margine irregulariter serrata, calyculum formans, lateraliter aristis 
duabis tenuibus aucta vel deficientibus. 
Affinis V. discolori, differt foliorum forma, pappo, indumento juvenili sericeo, 
aliisque. 
Sufratex 0,3-0,8, petala lutea, in campo pr. flumen Tapiraguay, Aug., 
n. 4306; id. in campo pr. fl. Carimbatay, Sept., n. 4578. 
Echinocephalum latifolium Gardn. 
Hook. Lond. Journ. VII, 29%; Flor. Bras. VI, 4, p. 230. 
Suffrutex 4-1,5 petala lutea. in dumetis insulæ Chaco-y pr. Concepcion, 
Sept., n. 7440. 
Spilanthes nervosa Chod. spec. nov. 
Radix fibrosa; caulis simplex 10-25 cm. striatus, leviter, sub foliis magis lanu- 
ginosus; folia opposita, inferiora internodiis duplo vel triplo breviora, alia lon- 
giora glaberrima sessilia, elliptico-oblonga vel elliptica vel oblonga, subcoriacea 
60/20 40/22 60/14 60/10 mm. vel minora, subobtusa vel breviter acuta nervo 
crassiuscule marginata, nervo medio ad tertiam partem dilatato dein trifurcato, 
nervis aliis tenuioribus laxe anastomosantibus, ; pedunculus 8-12 cm. longus, 
interdum 20 cm. laxe et molliter hirsutus; capitulum 10/10 12/12 mm. invo- 
lucri phylla 6 mm. longa 2-3 mm. lata elliptica vel breviter acuta receptaculo 
