E .p. 

 -■ V 



172 



E. Hassler. 



347. Mikania guaranitica Hassler, spec. nov. 



M, corymhosae vohtbiles. Series Angulatae. 



Herba volubilis 3—4 metralis; caules crassi herbacei, cavi, multi- 

 striati pilis hyalinis crispulis longiusculis sparse inspersi; internodia sat 

 elongata medio 10—20 cm distantia; folia opposita longe petiolata, tenuia 

 herbacea viridia, tringulari-vel ovato-deltoidea; petioli 3—9 cm longi 

 planiusculi striati et anguste alati pilis caulinis similibus laxe inspersi 



basi stipula lata foliacea ambitu hemisphaerica ± profunde 3—5 loba 

 aucti, lobi lanceolati vel ovati acuti ut foliorum dentes mucronulo terminati, 

 stlpulae in foliis evolutis ad 3 cm longae et latae lobis 8/2—15/8 mm; 

 lamina valde variabilis in regione florali 50/35 mm in parte inferiore 

 250/120 mm basi cordata et cuneatim producta, apice acuta vel subobtusa, 

 lobis basalibus vix productis, margine grosse crenato-denticulata, crenis 



hemisphaericis basi ad 10 mm latis in denticulum minutum ± abrupte 

 productis, e basi cuneata trinervis, nervis lateralibus flabellatim ramosis, 

 supra glabra subtus in nervis pilis crispulis sparsis inspersa, nervi supra 

 impressi, subtus prominentes el ut nervuli margine anguste alati. 



Inflorescentia corymboso-paniculata corymbi axillares et terminales, 

 longe pedunculati; breves laxiusculi; inflorescentiae rami pilis crispulis 

 ut caules sed paullo densius vestiti, capitula breviter pedicellata, pedi- 

 cellis 1—1,5 mm longis, mediano in dichasiis subsessile; bracteolae in- 

 volucro aequilongae anguste lineares apice subulatae, involucrum 6 mm 

 longum paleis viridulis tenuibus exterioribus concavis lanceolate oblongis, 

 interioribus planis lanceolatis margine hyalinis 1,5 mm latis, omnibus 

 minute puberulis apice acutis; corolla 6 mm longa, limbo tubo aequi- 

 longo, infundibulari ad % in lobos lanceolatos acutos diviso; styli valde 

 exserti, corollara 5—6 mm superantes, achaenia 5 mm longa minute 

 puberula, pappi setis densissimis ad 6 mm longis, leviter flexuosis pallide 

 rubellis. 



r 



Species nova affinis M. stipidaceae W. differt indumento, foliorum 

 forma et magnitudine, stipulis 3—5 lobis maximis, involucre, bracteolis 

 et aliis. 



* m 



Paraguay: In silvis prope San Bernardino, flores albi fragrantissimi, 

 flor. mens. Jun., Hassler 11778. 



348. Mikania anisodora Hassler, spec. nov. 



M. corymhosae vohtbiles. Series Ecordaiae. 



Suffruticosa volubilis 2—4 metralis, ubique glabra, caules sulcati; 

 internodia 5—12 cm folia opposita longe petiolata, petioli flexuosi 4—6 cm 

 longi supra leviter canaliculati et margine anguste discolori subalati; 

 folia deltoideo-ovata, basi subdeltoideo-rotundata, apico in cuspidem 

 triangularem producta, margine ± sinuata et minute denticulata interdum 

 supra basin utroque latere in dentem sinuatum late triangularem vix 

 1,5 mm altum mucronulatum producta, 7/5—9/11 cm cuspide ca. 10 cm 

 longo basi 4—5 mm lato, lamina subconcolor viridis sicco ± cinerascens 

 tenuiter membranacea, paulo supra basin 3— 5-nervis. nervis supra et 



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