724 BULLETIN DE l'heRBIER BOISSIER (2"' SÉR.). (152) 



Var. glabrata nob. 



Foliis subglabratis ejusdem formse ac. var. semiserrata. 



Suffrutex 1-2 petala lutea, in campo Apepu (Tapiraguay), Dec, n. 5962. 



Var. incana nob. 



Foliis superne niollibus, inferne dense cano lomentosis nec sericeis. 

 Suffrutex 2-3 pelala auranliaea iuler rupes Cerro Santo Tonias, Sept., 

 n. 1021. 



Vigiiiera guaranitica Chod. spec. nov. 



Basi suffruticosa, caulibiis herbaceis ereetis leviter angulosis; folia opposila 

 sessilia vel basi brevissinie contracta oblonga vel oblongo-lanceolata 75/20 70/20 

 90/19 43/H mm. vel minora, setis inconspicuis vix scabriuscula glabrata; 

 internodia 35-50 mm., pedunculus tcrminalis 25-40 cm. longus, sat robustus 

 (2 mm.); capitulum terminale 50-60 mm. iatum; involucrum ce. triseriale, 

 bracteis exterioribus brevioribus lanceolato-linearibus crassiusculis minus 

 adpressis, interioribus etiam basi longitudinaliter et crassiuscule basi et medio 

 bistriatis vel striatis, apice herbaceis dorso puberulis; ligul» ad 7 mm. longae vel 

 angustiores: achœnia immatura oblonga leviter pilosa basi vix attenuata, exaris- 

 tata; squamella; pappi dilalalo ellipticae parte snperiore crenatœ tenues tubo 

 Iriplo breviores. 



Aftinis V. tuberosœ cui similis differt pappo, textura foliorum, foliis liaud 

 glaucis, foliis oppositis amplioribus capitulis niajoribus. 



Suffrutex 0,5-0,6, petala auranliaea, in campo pr. Valenzuela. Jan., n. 6970; 

 suffrutex 1-1,5, pelala lutea, ad marginem silvae in regione cursus superioris 

 fluminis Apa, n. 7667; id., Jan., n. 8349. 



Viguiera Hassieriana Chod. spec. nov. 



Gaules basi lignosi, erecti, simplices vel vix ramosi, slriali, pilis palulis niol- 

 libus hirsuti ; l'olia sessilia opposila herbacea ovato-elliplica obtusa lircvilor 

 acula, supra basin distincte Iriiiervia, junioribus ramisque dense mollilcr liirsiitis 

 pilis 3-4 mm. longis; limbus 50/20 40/20 32/18 30/10 mm.; pedunc-iiliis niulus 

 20-30 cm. longus versus capituliuii niagis niolliler hirsutus, llexuosus; capitulum 

 50-60 mm. Iatum; involuci-i pliylla laiicoolato-acuta dorso molliter hirsuta 

 10/4 mm. vel longiora; liguhe Icxlura' lenui ; achaînium dense hirsulum; coro- 

 nula pappi margine irregulariler serrata, calyculum formans, lateraliler aristis 

 duabis tenuibus aucta vel delicicntibus. 



Aflinis V. discolori, dilïert foliorum forma, pappo, indumenlo juvenili sericeo, 

 aliisque. 



Suffrutex 0,3-0,8, pelala lutea, in campo pr. Ilumen Tapiraguay, Aug., 

 n. 4306; id. in campo pr. fl. Carimbatay, Sept., n. 4578. 



Echinocephalum lalij'olmm Gardn. 



Ilook. Lond, Journ. VII, 294; Flor. Bras. VI, 4, p. 230. 

 Suffrutex 1-1,5 petala lutea. in dumetis insulae Chaco-y pr. Concepcion, 

 Sept., n. 7440. 



Spilanlhes nervosa Chod. spec. nov. 



Radix fibrosa; caulis simplex 10-25 cm. sti-iatus, Inviter, sub foliis magis lanu- 

 jinosus; folia opposila, inferiora inlernodiis duplo vel triplo broviora, alla lon- 

 giora glaberrima .sessilia, ellii)lico-obloiiga vel clliptica vel oblonga, snbcoriacea 

 60/20 40/22 60/14 60/10 nnn. vel minora, .suboblusa vel breviler acuta nervo 

 crassiuscule marginala, nervo medio ad tcrtiam partom dilalalo dein Irifnrcato, 

 nervis aliis temiioribus laxe anaslomosanlibus, ; pediinculus 8-12 cm. longus, 

 interdum 20 cm. laxe el mollilcr hirsuUis; capitulum 10/10 12/12 mm. invo- 

 lucri phylla 6 mm. longa 2-3 mm. lala clliptica vel breviler acula receptaculo 



