Caulis volubilis, pennae scriptoriae crassitie, teretiusculus,
striatus. Folia petiolata, cordata, acuminata, integerrima, glabra, a
petioli insertione ad apicem 4 pollices, inde ad loborum
approximatorum rotundatorum basim 1. poll. 8 lin. longa, 4 pollices
lata, curvinervia, nervo centrali in mucronem setaceum 1 lin. longum
excurrente. Petioli angulati, foliorum longitudine. Pedunculus
cymosus, teretiusculus, dimidiam petioli longitudinem paullo
superans, strictus; pedicelli pollicares, apice incrassati, uniflori.
Calycis foliola 5, ovata, concava, carinata, 7 lineas longa, lin.
lata, carina in acumen subulatum baseos longitudine, apice
uncinato-inflexum producta; duo interiora paullo longiora, acumine
nonnihil breviori. Corollae tubus gracilis, quinque pollices longus;
limbus expansus patens quinqueplicatus, lobis medio brevissime
acuminatis, diametro tripollicari. Stamina corollae tubo prope faucem
inserta, 7 lineas longa, exserta. Antherae oblongae, post
dehiscentiam apice reflexae. Ovarium ovato-cylindricum, disco
annulari obsolete pentagono receptum. Stylus filiformis, tubi
longitudine. Stigma late-capitatum, emarginato-bilobum.
108. IPOMAEA AMBIGUA, caule volubili muricato, foliis cordatis
trilobis, lobis lateralibus acutiusculis, postice truncatis,
intermedio acuminato-mucronato, mucrone setaceo, calycis foliolis
oblongis carinatis, carina acuminatis, acumine subulato-recto,
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corollae infundibuliformis tubo gracili calycem quadruplo superante,
pedunculis bifloris, stigmate exserto.
_Ferd. Bauer Illustr. pl. Norfolk. t._ 171. _vers. fig. sup._